damaged solar cells?

I have constucted a solar panel however I am getting no volts out. I have inspected the cells and I have found a few that are split across from one side to the other and I was wondering if this is effectively a break in the pos neg circuit?

Question by smiler84089 9 years ago  |  last reply 9 years ago


What causes road damage?

What causes road damage looking for links to .gov sites for prof.

Question by nfarrow 8 years ago  |  last reply 8 years ago


What is the best way to replace a water damaged floor that is covered by a built-in bathtub?

We don't want to damage the tile, which is original from the 50s? We don't know how to dismantle plumbing? Ranch-style house.

Question by JackieLove 8 years ago  |  last reply 7 years ago


Does contact paper (used for wall art) damage a painted wall when it's removed months or years later?

We're not allowed to paint our walls so I wanted to do some wall art using contact paper/adhesive vinyl. It will be up for about 3 years and I don't want it to take the paint off when I peel off the paper/vinyl. Any info or tips on removal would be great! Thanks!!

Question by jamieliz21 10 years ago  |  last reply 10 years ago


Can I put a CD into a scanner to scan the art on the non-playable side without doing any damage to the data on the CD? Answered

I'm planning to make a copy of the CD in question to give as a Christmas present. I want to scan the art onto my computer and then print it out and glue the duplicate art onto the copy CD. However, I don't want to damage the original. Is there any way that my scanner (Lexmark) could damage the stuff on the CD? 

Question by black hole 7 years ago  |  last reply 7 years ago


The Great East Coast Flood....

The floods are abating and our little isle where I live sustained very little damage, but all around me, like a boat on a mount, I see the devestation that was wreaked out on the land.   A link to some of the photos of the flood itself. AND A link to what is being discovered as the waters recede....

Topic by Goodhart 7 years ago  |  last reply 7 years ago


When developing circuits with LEDs in them, pay attention to what is near them in the circuit....

Any heat generated can significantly shorten the life of the LED(s):  In the following blog, this is known as a Weak Link.

Topic by Goodhart 9 years ago


do welders of any and all types interfere with implants such as defiberlators and or pacemakers ?

Do welders of any and all types interfere with implants such as defiberlators and or pacemakers the doctors say yes they can and will but the companies say they can not ever interfere or reset settings?

Question by rayfalcon 10 years ago  |  last reply 10 years ago


smoke smell removal from oriental wool rugs...house fire.

How to remove smoke damage smell from oriental carpets. small house fire left residue, ash and smell throughout house. now I am on clean up, but can not find place that will clean theses type carpets with in 100 miles, (I live in the country), sure I can send to some rug company that does just rugs, but these are pure wool and expensive, do not want to take that chance. sorry, not knocking rug cleaner industries, they have done the deep clean steam on the wall to wall carpets, came out fine, but steam is not used on these rugs. well, any suggestions...thanks.

Question by 1rosebud1 5 years ago  |  last reply 5 years ago


What crazy weather! (Might not see me for a while.)

So I might not be around for a while. Turns out Hurricane Ike still had enough steam to send massive wind damage through Kentucky and Indiana as well as multiple other places. My neighborhood is completely out - we have trees down on cars and into houses, and power lines down all over the place.Most of Louisville is without electricity and it's not sounding so good - they're saying 3 days to 2-3 weeks before everyone gets power back because we sent so many emergency personal to Texas to help them out. But now I have to go to class and then try to find a place that still has food, candles and batteries left. And a place to charge my phone. Even the power where I work is out and has been for two days. :P Wish me luck! It's a madhouse here right now. I can't imagine what an actual hurricane could do after this.There are lots of crazy pictures here:http://www.courier-journal.com/

Topic by jessyratfink 10 years ago  |  last reply 10 years ago


And I was having the most fantastic day......

Really I was, I got into work, and had no real tasks to accomplish since my mentor was home sick and his boss was sick. Except she was so sick she asked me to do her job. So I got to spend 9 hours escorting 4 PE's all over to different locations. Climbing on roofs, crawling through mechanical rooms. digging things up, getting wet and dirty, all while trying to maintain a professional appearance.  I loved it!  I can't even express how much I love going to work, being an engineer is awesome. But then I got home to discover a microburst had hit our neighborhood. And was filled with anticipatory dread as I noticed the 65 foot oak in front of my house was no longer visible over the neighbors roof line. Well, the pictures below speak for themselves, there was only one way this thing could fall and NOT hit something, and it fell just that way. And if I hadn't been home late from work, my much loved truck would have been right under the trunk.

Topic by Tool Using Animal 8 years ago  |  last reply 4 years ago


Damaged right ring finger

Right ring finger glove Hi all does anyone know if there is a glove for 1 finger only, I recently damaged my right ring finger and want to cover it up - without having to buy normal gloves I have looked on the internet... but can't find ?

Question by jay77 9 years ago  |  last reply 9 years ago


iPhone 6 with damaged backlight

I have an iPhone 6 with a backlight problem. The screen turns on with no light (I can barely see whats on the screen with bright light shined on it) but everything else still works on the phone. The touch screen works, apps work, it’s just the screen that’s really dim is what the problem is. Is this a filter that blew or is it the entire system? I have found a nice recorded solution: https://www.youtube.com/watch?v=R8BedLX7JAg but I would like to be sure that this is the correct issue. Anyone perform the repair which is shown on the video?

Topic by donaldlewis1802 1 year ago  |  last reply 1 year ago


[arduino] Computer PSU damaged my servos?

Hi guys! I was hoping You could help me with sort of a problem :( So I bought this Modecom 400W power supply and hooked up 2 servos to molex 5v line and ground. For control signal i used standard arduino uno "example" code. Servos were buzzing for a while but they did not react to commands. Did I need a power driver for the servos? I think they should draw as much current as they need from the line, shouldn't they? So beforehand, I connected the motors directly to arduino for power and they worked. Now - nothing ;/ Nothing inside looks damaged (I think) Anybody had similar problems? Arduino UNO R3 Tower Pro MG 996R

Topic by januszknur 3 years ago  |  last reply 3 years ago


what to do with a camera with water damage? Answered

Question by watts78 6 years ago  |  last reply 6 years ago


PDF marked 'damaged and could not be repaired"

I'm finding this problem every time I try to access the PDF files. It comes up marked that: "The file is damaged and couuld not be repaired." Help!! Everything else works fine, including the PDF files from other sources!

Topic by ShanniTe 8 years ago  |  last reply 8 years ago


The-Green-Twist-Machine PDF is Damaged

The-Green-Twist-Machine PDF cannot be downloaded. The download stalls and a message appears stating that the file is damaged. I used both Firefox and Internet Explorer to try to download the file and neither will complete the task. Both browsers are successful at downloading other "Instructables" PDF's , however.

Topic by smokebox 9 years ago  |  last reply 9 years ago


How to open damaged pdf file? Answered

I have one pdf file which have changed some bytes in the middle. Adobe Acrobat Reader could not open it. There's a Leo a way to open it or view or restore?  Can GSview to do this?

Question by meszaross 2 years ago  |  last reply 2 years ago


Repair damaged laptop power plug

I have this damaged laptop (HP) power plug - I think my dad closed the car door with it sticking out. When I connect it to the power jack the computer starts up but then the power drops. Can you think of a reason why? The power jack seems to be fine. The computer starts up perfectly with a different HP power unit. I haven't checked it with a multimeter yet. I tried to use thick aluminum foil around the damaged part but it didn't work. With no replacement HP power plug is my only option to replace both the plug and the jack with some other male-female power plugs?

Topic by Mr.Bahur 7 years ago  |  last reply 7 years ago


Hanging plants without damaging structure

I read and enjoyed zoe_roses' bit on hanging tomato plants and DebH57's on soda bottle planters. I'd like to try these out.My trouble is that I live in an apartment complex that's pretty strict about ANYTHING we do to our small outside balcony space. I've been threatened with fines when using nails to hang plants outside before, and I think they'd blow a gasket if I hung a soda bottle full of dirt.I'm wondering if anyone has any ideas as to how I could make a hanger without making marks on any structure; essentially, something cheap and removable. Also, if anyone has any ideas how I could dress up the soda bottles (or use an alternate material) so that they look a little prettier, it would be deeply appreciated.Thanks!~Phillip

Topic by Thrasymachus 10 years ago  |  last reply 10 years ago


How do I repair my crocs?

My puppy got to my new crocs. They are the kind with a solid top and vents on the side, I wear them to work. They are black, if that helps. The little man chewed little stab-wounds in the tops down near the toes. Is there any way to resurface or sort of smooth them out without ruining them, or is there a (somewhat) easy way to add a toe piece to them that would camouflage the damage?

Question by KedaDibandion 10 years ago  |  last reply 2 months ago


Tempered glass screen protectors - understand and beware!

I recently had the joy of needing a new screen protector for my mobile after being dumb enough to drop it on gravel. The hard cover took all the impact but the film protector on the screen was scratched badly. Was old and partially worn anyway so I decided to upgrade to a Tempered Glass screen protector. Being somewhere rural I had no chance to get one in a shop so I ordered online. With no intention of advertising for some sellers, I collected a few links so you can check what I am talking about: Item1 Item2 Item3 Item4 Item5 Item6 So, what is my concern with these? They all can be found on amazon and other online services as well as on local markets... As I said I ordered a glass screen protector. If you check these listings and even some of the packing you will notice they all have a thing in common - being shatter proof and of 9H hardness. I also love this video showing how to remove and fix a glass screen protector! The last time I checked glass had one very distinct feature: It is hard and before it really bends it breaks - unless you use fibre optics of fibre glass cloth... What is my concern and warning here? Pretty simple: Stay away from expensive scams! Some claim their screen protector is only 0.25mm thick, even the 0.2mm one I measured was over 0.5mm with the glue... The hardness of 9H refers to the so called Moh's hardness - look it up on Wikipedia if you like. That means these tempered glass protectors would have a similr hardness than a diamond, or at least close to it. Problem is that they are made from plastic to start with and not glass at all. They claims that the screen protector is flexible because it is so thin - again a fake! Even the thinnest tempered glass will shatter if you bend it enough, not so these plastic ones. If you think I am making all this up try to use a really sharp knife or deburring tool and cut the thin sides of one of these protectors. All the ones I tested could be cut quite easy - and I though glass can't be cut with a kinfe... A nice website showing that the scratch resistance is far from the claims can be found here. And a video showing how a real glass screen protector sounds and breaks can be found here. So is it really all bad and should I avoid getting one? Not really if it is only for the added protection. To be clear here, and without the intention to blame any of the above sellers, some protectors actually do have a top layer made from glass and you can hear it as in the above video - it sound solid and not like plastic if you tap it with something hard. Another factor is the simple fact that plastic absorbs impact much better than glass. So where a real glass screen protector might shatter and crack like in the above video, the fake ones might one get a nasty dint or scratch. But you should be aware and clear about what you get and what to expect from it. These glass imitations are made from a strong polycarbonate plastic, similar to the stuff used for bullet and explosion proof "glas" windows - if you every watched the Mythbusters you have seen the big sheets I mean. The top layer of these things is specially treated to repell water, oil and dirt, it also gives the surface the good scratch resistance. The technique is nothing new, camera lenses, plastic sheets and the clear covers you see over the timetable at your bus stop all use it. The new thing is to intentionally mislable a product to make the consumer think it is glass ;) What is the real difference for the user? Check this video. Here a guy performs a drop test with a real glass screen protector. Thing is once the protector breaks the screen itself is broken too but until then it was not too bad. Here it is demonstrated how a real glass screen protector reacts to certain types of abuse - one of the reason I decided on glass. Compared to the plastic counterfeits just the sound on the glass is worth it, but I think the hacksaw was best. Another video from XDA gives a bit more info on how the glass is made - if you can't seeing a phone being abused then don't watch the drop tests at the end ;) Glass with these hardness levels and types of surface protection will give the user a long and worry free use of the phone. The plastic fakes will perform at a similar level for some time but will show signs of wear long before even the top coat of the glass one fails. Both types have their uses and if the fakes would be labeled correctly the user would actually benefit from that. On bigger screens like a tablet I would actually prefer the plastic ones to prevent damage once it needs replacing. On a mobile used in less than perfect conditions I would also go for plastic as it usually is a bit thinner and will fit better within quality hard covers. But when it comes to real abuse like using with dirty fingers most of the time or mostly outdoors where a lot of dust and fine sand can be involved I always go for glass. If you paid attention to the surface treatment then you already realised that the plastic and the glass are in the same region, making them quite scratch resistant. Still fine sand or metal dust will scratch it.... The difference is in the hardness of the actual material that was covered with the oleophobic film. Glass will not give in any way, where plastic is much softer - so not to be confused with the surface hardness! This mean that sharp and point object will easier penetrate the plastic than the glass, something to be considered if you often ecounter harsh use. In terms of actual protection we need to differenciate between surface quality and actual screen damage. After all when badly scratched we can replace the protector but if the display got damaged we are back to square one. The surface hardness was already covered so let's move on to the screen itself. In some of the above videos you can see the abuse a screen might see in normal conditions, and if we would not drop our phones so often repair shops would not be at every corner LOL I have done quite a few screen repairs, mostly for friends and work mates that did not want to pay the hefty extras in a repair shop. From there I got the stories on how it happened and in almost all cases the screen cracked when the phone landed on the corners. In one case the screen and glass protector failed, including the actual display when the phone was dropped out of a 4WD and landed screen first onto a rock. A glass protector will spread the (direct onto the face) impact force onto a much larger area, where a plastic one will produce a dint onto the actual screen much sooner. So again glass wins in terms of actually protecting your expensive screen. But be aware that all this is useless if the phone lands on the corners!! Let me explain: Both the top glass on your screen and the screen protector have a thin layer of "glue". This acts like a shock absorber, so unless an impact goes deep enough so the pressure on the actual screen is too much only the protector should fail. But the screen itself is a tight fit into the frame of the phone, so all side and corner impacts go directly into the glass. As the rest of the glass has no way to give or go the stresses will crack the screen. How should I treat my phone with the new screen protector? Exactly the same way you would without it of course. But if you don't have a proper cover that offers protection of the corners you should invest in one. Having a quality protector and a good case does not mean your phone can be used as a football, see it as an added insurance in case something does go wrong. For obvious reason it can also pay off to have a spare at hand, if something bad happens that requires replacement of the protector you won't be left with an unprotected screen ;) Last but not least, double it up: For people that already know their screen will see a fair bit of abuse in term of scratches it is a good idea to put an extra film protector onto the glass one. Once it is too scratched you peel it off and replace it, while the glass protector gives you the actual protection for your screen. Corning Willow glass As time of wrinting Corning Willow glass is the only "flexible" glass on the market, unless stated with your flexible screen protector you can assume it will be just plastic. I did not list it above as this high tech material is mainly reserved for displays and at least to my knowledge is not available for screen protectors, although I will stand corrected as I have to assume some big players use it for their protectors. The material is actually a sandwich where an ultra thin sheet of glass stis bewteen two layers of durable coating, read it up on their website it is quite interesting. It won't reach the strength of their famous Gorilla glass so without an outer plastic that has the additional oleophobic coating it won't provide the strenght of real tempered glass protectors. Some phones like the Galaxy Round and the fleixble HTC phones use it for example.

Topic by Downunder35m 3 years ago  |  last reply 5 months ago


Will keeping a cell phone in an Altoids tin damage it?? Answered

Hi. i just got a cell phone, and since i have very little money, i have to keep it safe and working for quite a while because i wont be able to afford a replacement. To help keep the phone safe, i made a phone case from an altoids case, covered in leather with a belt loop and padding on the inside. I was wondering if keeping the phone entirely surrounded by metal could have any ill affects on it. I understand that it reduces signal by quite a lot, bit will it actually harm the phone?

Question by ilpug 7 years ago  |  last reply 7 years ago


Can wd40 be used to lubricate PVC? If not, what can be used? Answered

I heard somewhere that WD40 would damage or corrode PVC, and wanted to know if this was true. If it is, does anyone know what could be used to lubricate PVC.

Question by 1337f0x 8 years ago  |  last reply 8 years ago


Help with repairing a Microsoft Sidewinder X4?

Hello all! I recently moved in my recently made desk, only mu keyboard sustained some damage in transit, from a lamp falling upon it. Neither a re-plug in nor a reboot would et it working again. It wasn't being detected by the computer at all. I opened it up, (off warranty anyway) to check for anything obvious. I checked all the connections, and re-seated them. Then examined all the wiring for any defects. I reassembled everything, and checked it to see if it would work. Alas, ir did not. I swapped back in my old keyboard, but after some jostling, the Sidewinder was re-detected. It remained functional for only around five minutes, after which the space-bar seemed to be repeatedly being pressed multiple times a second, then it stopped cold. I redid all my software fixes, including a reboot, but it did not regain any functionality. Any help would be appreciated, and I'm hopeful. Reference pics can be borrowed from here: https://www.instructables.com/id/Change-the-Backlighting-Color-on-a-SideWinder-X4-K/ Personal thanks to electron_plumber

Question by FullMJacket 6 years ago  |  last reply 6 years ago


Waterproofing RC servo connections?

Hi everyone. I have used epoxy to waterproof my RC receivers. I have thought that there is no need to waterproof the connections because it is only 6V and not enough to corrode the connectors. I still want to be able to swap my receivers between models. I have splashed through puddles before but not completely submersed it in water. So is there any reason that I should be waterproofing these connectors? Or is the voltage not enough to cause any problems? Thanks, David.

Question by David97 5 years ago  |  last reply 5 years ago


i have a receiver that reads at 120W is that enough to drive 2 speakers a tweeter and an external subwoofer ?

I have a receiver that reads at 120W is that enough to drive 2 speakers a tweeter and an external subwoofer the receiver says on the back 120V 120W 60Hz 170VA  so im guessing it runs at 120W per channnel at 8 ohms so would i risk blowing the amp or speakers if i plug an external subwoofer to the speakers and tweeters the recever does not have a sdubwoofer channel so would i damage anything at all with it in the channel as well by external subwoofer i mean it has its own power source its own crossover its own amp it has an rca in put or you can use the terminal plate it has as well this is the JVC RX 212

Question by fastcar123 8 years ago  |  last reply 3 years ago


help do i have water damage?

I can't tell if i have water damage i let someone use it and now it doesn't work.. it turn orange when i plug it in but won't turn it on..

Question by frogbaybee 10 years ago  |  last reply 10 years ago


Would this EMP cause temporary or permanent damage?

I am thinking of making this EMP. Would this EMP cause a temporary damage? Or Permanent? http://www.wikihow.com/Build-an-EMP-Generator And if someone can find out the blast radius, that'd be great.

Topic by ArcAngelZz 6 years ago  |  last reply 6 years ago


Help to repair battery leak damage in toy

Hello, I know nothing about electronics and would like to learn a little. Starting with the numerous items which have had the battery leak out. I think it has leaked only to the battery compartment (white stuff on the spring). I have cleaned it up and don't know where to go now. Please help! Is this easily repairable? Where would you locate the items used to repair it? Thanking you Amanda

Topic by 7527amanda 10 years ago  |  last reply 10 years ago


How to replace damaged LCD in iPhone 7

Yesterday while getting out of my car, my phone slipped out of my gym shorts and hit the sidewalk. I came to a complete halt and slowly but carefully picked up my phone. "Maybe it got a couple of scratches and that's it?" But when I flipped the phone over, I discovered that it had a bunch of spiderweb cracks. I would like to repair this myself, I found a good video guide: https://www.youtube.com/channel/UCxKlNJ577sGSnZAb5fLPD1g Should I follow this instuctions, I think it is pretty decent job, what is your opinion?

Topic by jerry9spinger1 1 year ago  |  last reply 1 year ago


iPod touch 4g (badly damaged) screen repair

Ok, I recently bought an iPod touch 4g and really love it. Now my brother really wants one but doesn't have enough money to get one. Sooooo, yesterday he found one laying, screen smashed, 2 inches underwater in a stream. He begged me to charge it so finally I let him use my old charger. We plugged it in and I almost screamed when it actually started charging. Naturally my brother freaked out but when we tried to unlock it, it turned out the screen was too shattered to completely slide the unlock slider. My brother has $14:00. So now I wanna know if I can fix the screen enough to actually use the iPod. Plz help? Sorry I can't include a pic of the iPod right now.

Topic by duneflipper crafts 6 years ago  |  last reply 6 years ago


Will this damage my phone?? (my electric lighter idea)?

I have an idea here that i want to make an electric lighter (for cigarette) . http://i1224.photobucket.com/albums/ee373/IzzwanMucho/idea_125.jpg <--- image here plug the audio jack to my phone, play some music then the fine wire will glow (hot) to ignites the cigarette . Is this will work ? will it damage my phone ? Sorry if my english is bad .

Question by Izzwan125 7 years ago  |  last reply 7 years ago


How to Repair Air Purifier Damaged by Power Surge?

Does anyone know how to repair an air purifier that has been damaged by a power surge?  I have several Cleanaire D2000 units - which are absolutely outstanding, BUT which have a weakness of being particularly susceptible to power surges.  Since they cost $400 apiece, it makes for a pretty costly power surge.  Are these kind of things repairable, and if so, where would I (or my technically-gifted friend) start?   I'd like to see if it's possible to repair one of these before going out and buying a replacement.  (Then the next step is to buy a good surge protector!) Thanks!

Question by Thaas12 4 years ago  |  last reply 4 years ago


Does running computers in cold weather damage anything?

I hav a bunch of computers but not much space, so I run some of them in an unfinished part of my house. Because this part is unfinished it gets cold, very cold sometimes down to 10-15 degrees farenheit. I just wondered if there was any way this could damage any of my computer components. I want to make sure it is OK to do this. Thanks.

Question by nurdee1 7 years ago  |  last reply 7 years ago


how to put into use some damage electromagnetic fan? Answered

I have a lot of ceiling fans that doesn't work anymore and i would like to convert it into something useful rather than giving it to recycle depots can anyone show what i can do about it.

Question by jovenhatsjr 10 years ago  |  last reply 10 years ago


Recovering files from a hard drive of a damaged computer.

Hey guys and gals, My toshiba laptop took a dive off the counter and  it doesn't power up anymore.  I ordered a new laptop and I would really like to retrieve my files from the damaged computer's hard drive.  I had a friend take it out and put it on two laptops, one of them being another Toshiba but no luck.  I wasn't around when he tried it but I think he said that  it wouldn't read the drive and it would spit out error messages.   Not sure if it has something to do with the fact that the old, damaged computer was a 32bit and the ones we tried to put it into were 64.  Does anyone have any suggestions or ideas on what I can do?  I had just bought an external hd and I had not saved any of my pictures, videos, documents, or songs yet.   I don't want to lose everything.  Please help. Thanks in advance. oh, btw, I know very little about computer/tech stuff so please explain it accordingly.   thanks again

Topic by thewetturd 7 years ago  |  last reply 7 years ago


how to avoid damage to ground from trashing fruits ?

We have a grapes tree in our garden. the grapes are at their peak now (if left on the tree they will begin to spoil) the grapes are salty like hell and not edible but perhaps can be used to make some jam or something else parents say trash them - no time to bother making the jam + dont know any friends who do either i see a problem with it - trashing them means trashing the minerals from our garden ground. won't it degrade the ground ability to grow stuff ? how to avoid it ? or does trashing them actually help remove excess salt from the ground ? (is the problem with the ground or with the tree itself ?)

Question by 11010010110 9 years ago  |  last reply 9 years ago


GTA IV disk damaged! Any way around? Answered

I have had GTA IV for a while now, but now my twerp of a little brother decided to "borrow" the disk without me asking! When he returned it he said he had dropped it and there is now a massive scratch down the middle and it no longer functions! I still have all the files on my laptop, but is there any way to make the game run without the disk? (Like a patch or something) I know this exists for III, San Andreas and Vice City as my friend has them, but I'm not sure about IV. Please help!!!

Question by Lowney 9 years ago  |  last reply 4 years ago


Would mounting a TV inside a piano damage the TV?

We have an upright piano, and we don't have a good place to put our flatscreen. My thought is to put the flatscreen inside the piano. I have measured for clearance and it fits quite neatly. My only concern is if the vibrations from the piano will somehow damage the TV's electronics. On the one hand, the TV has speakers and generates a dynamic range of sound and volume and does just fine. The TV can get louder than we ever play the piano. On the other hand, the piano sounds are fuller and maybe vibrate more than the speakers in the TV do. More details: The vertical board behind and under the keyboard has a latch that is opened so that the board pivots down and forward.  The TV would go inside the space behind this board. It would make the TV close to the ground, but it would be more convenient than the current location. The space in the piano has a depth of about 6 inches. I would install a piece of 3/4 inch ply across the back to mount the TV to. It would be right in front and possibly touching  the sound board and the bass bridge. The TV is 4.5 inches deep at the deepest point. I am sure that the construction is feasible and well within my abilities. I am unsure of any danger to the TV from such a setup. Any insights, references or suggestions are well appreciated.  Thank you, Michael Moore

Topic by stuporglue 9 years ago  |  last reply 9 years ago


Will i damage small solar panels on a car battery? Answered

I've got a couple tiny solar panels and i wanted to have them charge a car battery, The panels in series put out 18v at 50ma but the leads are just those tabs they spot weld to batteries. Is it possible to fry the solar panel or leads?  I am not sure about amperage of the battery. It's similar to one i bought a long time ago with 650 Cold cranking amps(not sure how that translates to total amperage but i'm guessing that is how much you can safely draw from it at one time)  i understand that it wouldn't be proper to attach 18 volts to a 12 volt car battery, it charges at around 15 volts like most car batteries.  I understand that 50ma will take an extremely long time to charge something like a car battery. But in a hypothetical emergency situation, would this work temporarily without destroying the solar panels.

Question by Tomahawk92 3 years ago  |  last reply 3 years ago


How to remove the top of a soda can without damaging it? Answered

What would be the best way to take off the 'lid' of a soda can, so you can use it for other things without destroying it? soda cans have these 'lids' that are put on after they are filled, anybody know how to remove these while keeping the rest of the can intact?

Question by toelle 8 years ago  |  last reply 3 years ago


would putting a lead acid battery in a backpack damage it?

Im trying to find a relatively inexpensive way to run my laptop off of something that will fit in my backpack and will be something that i can carry. so far i found out that i need a deep cycle or marine battery for my inverter, and an enclosure to make sure i dont get sulfuric acid everywhere, but all of the research ive found were about home backup systems which are stationary. would putting a lead acid battery in a backpack and carrying it around damage it or make it leak? i also found a lot of lithium ion batteries on amazon around 700 to 1600 mah for $.50 - $1... the sellers that sell them for that much have good ratings, is there something wrong with these, or did i hit a goldmine? example: http://www.amazon.com/Olympus-LI-30B-Rechargeable-Battery-Digital/dp/B00062WV6I/ref=sr_1_20?ie=UTF8&s;=electronics&qid;=1273381311&sr;=1-20   if lead acid doesn't work (or the lithium ion), would 10 nimh d batteries work?

Question by the judge 9 years ago  |  last reply 8 years ago


Can magnets in a cell phone pouch damage the phone? Answered

I had a Samsung flip-phone which I kept in a leather belt pouch with a magnetic flap closure. For the first 18 months, the phone was fine. Then it started rejecting calls when I removed it from the pouch to answer it, not every time, but once in awhile. I assumed that I was accidentally touching the Reject button. This kept happening more and more frequently, even after I started being very careful not to touch any of the controls. Finally, it started rejecting the calls when I lifted the flap of the pouch, without touching the phone at all. That's when I got a new phone. Throughout all of this, it worked just fine for outgoing calls, and sometimes even for incoming calls if the phone was not in the pouch when the call came in. As I said, I have a new phone now, and I still have the pouch but I'm kind of afraid to put the phone in it. Has anyone heard of phones being messed up in this way by magnetic-closure pouches before? All I find on Google is complaints about signal interference on the iPhone.

Question by RavingMadStudios 9 years ago  |  last reply 8 years ago


LED panel lights with water damage - other uses?

We had a slight roofing problem at work and as a resul a lot of our recently installed LED panel lights got flooded.Now, I though: How hard can it be to fix them....Surprisingly these flat replacements for flouroscent tubes are actually manufactured in a way that you can take them fully apart if you dare.Like some old computer or flat TV screens they use a row of LED's and then some sheets to direct and distribute the emitted evenly throughout the entire panel - like a backlight with no screen.What was a surprise however is the size of the LED's and how they are "soldered".Obviously a mass production in a reflow system.First problem for me was that the LED's used are right between two commonly used SMD sizes.So a 0204 is far to big while a 0102 won't even touch the solder pads.For once I did the smart thing and decided to try to remove at least the clearly faulty and correded bits first and did not order a bunch of LED's...A drop of glue is used to hold the LED's in place until they are soldered.But unlike any glue I encountered for this purpose the stuff won't come off.You can use proper double sided soldering tweezers or a heat gun to soften the solder but the LED itself won't come off.Last resort was to increase the temp of the soldering equippment to soften the glue or to even fully melt it.Lets just say the plastic film making the acutal connections like a circuit board does not tolerate the heat required...I have now a bunch of useless lights, some still working LED power supplies...Was wondering if anyone ever tried to make a backlight screen or one of these panel lights work in reverse?Meaning using natural light on the panel to "collect" it at the thin bit where the LED's were located.Might be useful with some fibre optics or solar cells.Are there other good uses for these films, foils and sheets in a backlight system?Don't want to toss them out only to realise a few weeks later these things are actually good for more things...

Question by Downunder35m 2 months ago  |  last reply 2 months ago


How can I repair water damaged exterior bricks?

Solid brick home has suffered severe winter with water damage causing some bad flaking and literal breakage of bricks in two places. Shallow damage in area of about 3' x 3' on outside of chimney; deeper, more severe damage affecting maybe six bricks in one corner near the ground where large chunks have cracked off. The house is painted brick, built in 1937 with a layer of brick outside, a layer of concrete, and then another layer of brick inside, so the exterior walls are brick clear through to the interior. There is some water leakage into the basement from the corner damage.

Question by 9 years ago  |  last reply 2 years ago


hot glue damaging any part on a disposable camera circuit?

Such as the transistor or other devices it is a small hot glue gun

Question by xproplayer 10 years ago  |  last reply 10 years ago


How much damage can a wall socket do to a person?

I took apart my cell phone charger and put the two prongs in the outlet so that i wouldnt lose them and as it turns out, metal conducts electricity, and i shocked myself. (it was kinda fun) i know that isnt serious, but how many times would it take for there to be lasting damage to my brain or something?

Topic by J-Fly 12 years ago  |  last reply 12 years ago


how to repair a damaged hp compaq 6720s notebook charger.?

 i was charging my laptop at home when due to voltage fluctuation, there was a small spark on the charger and it gave a burning smell. i realised tat the charger is no more functioning. can any 1 please help me fix it?? is it repairable if not can any one give me an alternative instructable. i searched for it on instructable but could not find a solution. 

Question by para p 9 years ago  |  last reply 9 years ago


How can I fix my damaged table veneer?

There has been an accident with our kitchen table. We accidently cut something on the table with out protection. This has left some pretty obvious gashes in this table. The main problem is we live in a rented accommodation, and this table was supplied with the house. I can see 3 options. 1. Own up to the letting agent and pay an unknown amount for the damage. 2. Replace the table. 3. Try to repair the table some how. Ideally I'd like to get this sorted as cheaply as possible. I have tried buying some coloured pens, but couldn't find the right colour and wax that seemed to be the right colour, but wouldn't apply correctly. Any suggestions?

Question by hackzilla 9 years ago  |  last reply 9 years ago