Introduction: TV Salvage

Picture of TV Salvage

Hey guys and gals, I am doing my very first instruct able on salvaging parts from a tv. I am pretty new to this so bear with me. I am not sure what I can or should salvage from the tv so I am asking y'all to tell me what I should save.

Step 1: Step 1: Screen

Picture of Step 1: Screen

First thing I want to do is see what I can do with the screen. There is the outer screen you see the image on and two thinner screens. There is also some of the tubes from the back that I believe light the screens.

Step 2: Inner Electronics

Picture of Inner Electronics

with the inner electronics the only thing I know I am saving is the pair of speakers.i don't know what to do with any of the other parts so I'm counting on y'all.

Step 3: Thanks

Thank y'all for looking at my first instructable and for helping me salvage parts. Keep calm and tinker on.

Comments

pfred2 (author)2014-07-07

It looks like you have blown caps in the PSU to me. That is the most common failure with these. You probably could have fixed it for a few dollars if that is the case. The cap I circled in red is certainly toast.

http://i.imgur.com/adgMlfk.jpg

See how the top of it is bulged compared to the one above it? I'd replace the other one next to it too, even if it doesn't look shot.

Orngrimm (author)2014-07-07

The powersupply surely deserves a closer look. If it works and you can isolate it (Otherwise danger with 220V!): Use it as cheap and free powersupply.

If nothing you can always desolder the transformers and use them in other electronics-projects.

For the rest i would say: Too specialised and too all-on-one-board to be of simple use... surely there will be a range of interesting parts on the boards like high-amp-coils and such... but if you dont know them and dont plan on builiding your own circuits, they are of very limited use...

nqtronix (author)2014-07-06

Instructables should always be some sort of How-to. Questions like this belong in the forums. But because you are new here, I won't mind it this time.

Concerning your question:

In general I follow the following steps if I've anything i could salvage:

1. Does it work and do I need it? -> Keep as-is and use

2. Does it work but I don't need it? -> store for later use/ sell (if worth)

3. Does it not work but I could need it? -> Try to repair. It's sometimes very easy (bad solder joint, broken cable, visible damaged parts, mechanical issues)

4. Does it not work and I wouldn't need it anyway? -> take apart

5. Identify what is inside. Do I need some functions? (In your case maybe power supply, speaker, LCD backlight) -> try to figure out if that part can be used standalone. You want to keep some modules (inverter for backlight, amplifier for speaker) if they are seperate. Locate the power rails of the power supply (can be dangerous). Your fotos are blurry as hell so I can't tell you whats going on.

6. Put "nice" mechanical parts aside (may include srews, casings, shieldings, other metal parts, mounting parts, rubber feet, lightpipes for LEDs, ... judge yourself what you could need)

7. Take the remaining stuff apart. Disconnect all connections, keep the cables (cut them of if nesessary). Take all heatpipes (it seems like there is one glued to the main chip, use a screwdriver to lever it of). Desolder all components you can. You may start with the big ones like capacitors, those are pretty easy to get out. Leave everything on the board what you can't desolder with you skill/tools right now.

8. Store all boards you can't desolder completly. You may be able to do this in the future and you'll regret throwing all the stuff away.

Relevant information according to your photos (The quality horrible, please make some new photos with better lighting, a steady hand, and the highest quality setting possible, if you want precise help):

There's no way to get the display running. For notebooks there is, but they have LED backlight. I'd keep the two diffusion foils.

The backlight seem partly broken, getting the rest running could be a safty issue.

The power supply looks ok, it has the inverter for the backlight build in, you may keep it (or desolder because those parts are pretty easy to get out ;))

Keep the chinch module, the speaker + all cables. Take the heatsink. Desolder componests if you can.

(follow the information above)

Good luck and welcome to the instructables community :) Don't forget to publish a real instructable if you build anything new with those parts ;)

Hooligan2 (author)nqtronix2014-07-06

I took some better photos. They are much better.

Hooligan2 (author)nqtronix2014-07-06

Thank you. I was going to try to post some how to's, but I couldn't figure out how to post anything. Your comment was very much needed and appreciated.

Jan_Henrik (author)nqtronix2014-07-06

Agreed! :)

Hooligan2 (author)2014-07-06

I took some better photos. Here they are.

nqtronix (author)Hooligan22014-07-06

Great! Let me see:

1. Display controller. Seems to be all SMD, you'd need a hot air rework station for such stuff. The "big" chips are useless, but you can use:

1.1 EEPROM (likely)(chip with the blue dot on it)

1.2 Diode 1A (right next to it)

1.3 MosFET(likely)(thick black box with heatsink tab)

1.4 Coil (round, "3R3" printed on it)

1.5 PTC fuse (self-resetting) (right side of the coil)

1.6 IC (could likely be a quad OPAMP/Comperater or some logic)

1.7 Resistor networks (2x)(next to connector, 8 contacts each)

1.8 Oscillator (metal can next to main chip)

2. Main board. Still a bit to shaky but I'll give my best:

2.1 Connectors. All of them. Might be a bit hard to get them out because of the many pins/contacts they have.

2.2 Capacitors. The matal cylindrical cans. Even though they're through hole and have only two pins they're hard to get out because the board absorbs most of the heat.

2.3 Inductors. Theres one with a 270 printed on it, 2 in the top left corner and another right next to the satelite receiver box

2.4 Plenty of SMD parts. General rule: The less pins the more useful it is for home purposes. You can look up the numbers online to get exact part information (highly recommended!!!). Devices with a heatsink tap are made for high power applications, you definitly want to get those.

2.5 crystal (on the right side, small and flat metal case)

3. Power supply. I would tear it appart. It's an easy and fun job to desolder, because the board is single layer (does not absorb that much heat) an the components big and easy to handle. Futhermore the build quality seems to be not -that- good (slightly bend board, top of one capacitor is pushed up, which means end of it's life)

3.X You can use allmost everything. If you have a question what a particular part is don't hesitat to ask :)

4. Button array. Can be pretty useful, so keep that one as-is. Keep the plastics and the cable as well (all together)

5. parallel port. You want need it as an assambly, but this is realy hard to dessolder. Keep as-is as long as you (a) don't know what o do with it and (b) don't have the skill and tools to desolder it.

6. Speaker. Inspect the place where they where connected to annother board, look up those ICs and figure out where the amplifier is. Store them face down to prevent damage.

7. IR receiver & LED board. I'd desolder thos few parts as you won't find a applicaion where the assembly would be more handy.

Thanks for helping to protect th enviroment by reusing old parts. If you need help to identify anything fell free to contact me (try to figure it out yourself first ;) ).

mintyfreshpenguin (author)2014-07-06

when taking equipment apart I like to keep as much as possible. Speakers are always handy.

The sort of things I'd go for are
Capacitors, Transistors, Resistors. Diodes, LEDs. Sockets, plugs and connectors. Cables. I think there is a heat sink in your photo, could be handy for a Pi (What's under that sink). Fans, IR receiver, Buttons, Switches etc. It all depends on how much you like to tinker really. Some of those black chip packages may come in handy. I can't read the details on them from your photo the resolution is too low. If nothing else it would be a great way to practice soldering and de-soldering.. I love tearing old kit apart. What ever you do, have fun.

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