Introduction: Old TV USB Hack for $0.00

I have an old crappy TV I got as a floor model at Circut City when they closed their doors.

It's got a built in DVD player and 2 HDMI ports but no USB port...

Now, We just bought a new house and I figure why not stick this thing in garage? I dont care if it breaks, gets packed with saw dust etc....

I could just run a micro USB cable threw the low voltage box along with the AC adapter cord, but I hate wires. so logically I figured.... INSTRUCTABLE TIME!

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Step 1: Opent the TV

So TV's are dangerous! Make sure yours is completely discharged or you know what the hell your doing before you do this!

Any electrical device could cause serious injuries or death! Modifying one could cause fire or worse!

Now, for every one else... Remove the wall mount and all the screws you can find.

Pop the TV open and look for the 120v ac adapter and cut any tape, wires, cable ties etc...

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Step 2: Drill

Drill a hole in a discreet place that is big enough to fit your micro USB threw.

Note: You may need to step threw bits to get the optimal size.

Quick tip: Use some scrap paper to catch the shavings. This will help to prevent shorts and keep metal shavings from sticking to the speaker magnets.

Step 3: Who Doesn't Have This Crap Laying Around?

Take an old crappy 120v to USB adapter... Preferably one that is slow like this thing unless you have others or something else which demands more power.

The output on this adapter is only 0.7 A! Enough to power a chromcast or take 30+ hours to charge your phone...

Take some spare wire that matches or exceeds the current TV wiring. I just happen to be running a bunch of electrical so I have 100's of feet of 14-3 laying around...

Take 2 short pieces and bend the wires threw the holes in the prongs.

Scratch the prongs! This is a nessisary step to get solder to hold to the slick prongs. Mine just happen to already have been scratched threw years of sliding around a junk drawer.

Next solder! Preferably not with the crappiest soldering iron ever!

Once cool slather it with liquid electrical tape, heat shrink it, electrical tape it, plastidip it.... Just makesure it cant arc!

Step 4: Snip Amd Strip

You dont need the ground. So just cut the + and - or, Hot and Neutral or Power and Ground...What ever term works for you.

Strip the wires...

Step 5: Wake Up the Cat

There is no reason for this step. It is optional. You can skip it at any time... If your any reason you get lost durring this Instructable . Please revert back to this step before proceeding.

Step 6: Be Anal

I wrapped it again cause I could. Sue me!

Step 7: Nuts!

Wire nut the adapter in. Now I should suggest that you could locate this port where it could be accessed if you plan on using this port for other things. That or pick up a USB extension and make that external.

Step 8: Stuff It In

Where ever works... Use tape, cable ties, velcro, double sided sticky tape... I don't care what you use its your TV!

Now pull the wire through!

Step 9: Close Up Shop

Put the screws back in. Pull the cable all the way out... or what ever you need... Your call...

Step 10: Plug It In

DM me if you need instructions on how to do this.

Also please leave your phone number, address, full name, checking account info, credit card number / date of experation and the 3 numbers on the back. Also your social security number and a copy of you birth certificate to verify you are who you say you are!

Step 11: Make Sure It Works

Just make sure it works before you go all crazy.

Step 12: No Visable Wires

Well just 1 wire. At least it's manageable vs. 2 wires, extension cords etc... Still need to clean it up a bit but a zip tie works until I paint.

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Comments

author
MrP24 made it! (author)2017-02-25

thx what a complet tuto

author
Rushrv made it! (author)2016-12-29

in Step 10 you forgot billing zip code with the credit card if it differs from physical address.

author

Damn! Your right! FAIL!

author
oliveira.igorm made it! (author)2017-01-02

why do you have an adapter to connect the chromecast to hdmi?

author

It comes with it and the adapter and it works not only to make it flexable ti hidenit a bit better but also as an extension for the chromcast's internal antenna.

author
elfercho made it! (author)2017-01-12

Nice idea!!!!

author

Thank you!

author
soilwork made it! (author)2016-12-18

Step 6 LOL

author

I aim to please! ?????

author
soilwork made it! (author)soilwork2016-12-19

"Be Anal" I believe that you're talking something like analogic right?, but if you do speed reading and appears "Be anal" that make me laugh :P

author
pandadude made it! (author)pandadude2017-01-02

soilwork maybe you're not a native english speaker if you don't get this joke, I don't know? Look up 'anal retentive' he means what he says by 'be anal' but only as a joke.

author

lol I miss read as welll...lol

author

????

author
electrifier made it! (author)2016-12-19

You could also see if the TV already has a 5v output on it's PSU and solder your micro USB cable directly to it. This would save you messing around with dangerous mains voltage wires.

author
asadabdul made it! (author)asadabdul2016-12-28

Dangerous main voltages? The real danger is in Step 5. Some men just want to watch the world burn LOL.

author

????

author

lol not this one thank god!.. lol

author
asadabdul made it! (author)asadabdul2016-12-29

Waking up a cat always have an inherent risk XD

author
rybitski made it! (author)rybitski2016-12-28

True, but what if the extra load is outside the capacity of the PSU? Without a lot of reverse engineering you can't know for sure. 99% chance that it wouldn't cause any issues, but I digress. 120 isn't anything to be afraid of if you take the proper precautions.

Great instructable!

author
Ronald MontyM made it! (author)Ronald MontyM2016-12-28

chromecast is not an over toaster.
also, power supplies that are in our appliances are usually rated at least 1.5 or twice, that's how the engineers specs out a power supply to compensate for surge and extra load.

author
rybitski made it! (author)rybitski2016-12-28

I agree with everything you said. Also note that you used the term "usually" as in not always. Both of statements are in agreeance, all I'm saying is that without specs it is uncertain.

author
sp72 made it! (author)sp722016-12-20

Yes. I would definitely prefer this. All you'd need is a pinout for microusb plug to figure our +5V and gnd and a multimeter to check which color wire on the cable are connected to them. Solder directly to the power output board on the TV. Done!!

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author

Sadly this TV is so damn old that there is no 5v. ?

author
sipek made it! (author)sipek2016-12-28

all electronics work with 3.3,5 and 12v your tv definetly has them

author
timingworks made it! (author)2016-12-28

Very cool hack! I would not have attempted that before reading this... Now I want to buy a slightly old TV, old enough to not have a USB but new enough to have an HDMI.

author

Yeah, This thing has been in storage for so long that I could be 100% certain that the system was de-energized. But honestly if I found a good deal on another I would do the same thing again!

author
Ronald MontyM made it! (author)2016-12-28

Why not just plug directly to 120v outlet? just so to hide one skinny power cable?

this $0.00 hack cost you more, you now have a device that's being powered 100% all the time even when the tv is off.

If I'll be doing all this trouble, I'd rRather tap onto the 5vdc regulator of the TV pcb, (or buy a $1.50 5vdc regulator and tap onto the DC line), that's the most logical thing to do.

author

Eithor way if its pluged into the wall, into your usb on the back of your TV, or this your going to have both the TV and the dongle powered at all times. So that squashes that. If I pluging it into the wall I would now I need to deal with a 4' micro USB and some form of extension which means I'm not cleaning up wires I'm adding to the mess... Plus this TV is plugged into a WeMo WiFi switch so when I'm done with it I can press a button on my phone and shut the whole system down. I will just add a step so you can see my reasoning behind hiding the wires.... Again wires piss me off so I wanted to hide them not make them stand out.

author
BrianS133 made it! (author)2016-12-28

I don't understand what your doing here, since theres already a HDMI port on the TV? Running power to the Chromecast? Is that was this is?

author

Google's Chrome Case requires external power to power the dongle. It cant get power from the HDMI.

author
sipek made it! (author)sipek2016-12-28

hdmi doesnt have enough current to provide for any device so you need external power. MHL v2 supported devices might work without an external usb.

author
GuillaumG made it! (author)2016-12-28

There's something simplier: you can plug the Chromecast on the wall with an adapter, just like you do with a phone. :)

author

The point to this was that I didnt have extra wires hanging around. The closest plug is 10' away... So I would eithor need add a socket behind the TV, buy a ultra long micro USB or use an extension chord all of wich where what I was trying not to do.

author
Tachyon made it! (author)2016-12-21

I would certainly recommend putting a rubber grommet in the hole the USB cable passes through to prevent shorts.

author

I ended up finding a piece of wire loom that I slipped over the wire, threw the holes and zip tied onto the cable.

author
rafununu made it! (author)2016-12-20

You've got a stoned heart to wake up this so kind cat.

author

He was pretty bummed I was downstairs messing around. I woke him up and he came running down to hang out!

author
smpcorp made it! (author)2016-12-19

Schlock.

author
Suraj Bhawal made it! (author)2016-12-18

I'm stuck at step 5

author

Thank god it's optional or you would be screwed for what could quickly turn into an infinite amount of time.???

author
dan3008 made it! (author)dan30082016-12-18

quick bug fix for that step, please insure cat exists and is alive. If the cat does not exist, or is dead please skip this step

author
Suraj Bhawal made it! (author)Suraj Bhawal2016-12-19

Ah thanks! in my case the cat doesn't exist.

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