Introduction: Modify a CRT TV to Support Stereo Headphones

Today Brandon from Unseen Legions DIY will be showing you how to modify your old CRT TV's to have a headphone jack that turns off the normal speakers when you plug in your headphones! Great for late night shows when you have a spouse or roommate.

What you'll need for this project:
Soldering Iron & solder
A Dremel & drill bits for it
Heat-shrink Tubing (or electrical tape as a temporary measure)
A 1/8th inch closed circuit stereo headphone jack
100 ohm, 1/2 watt resistor
and of course some electrical wire

Watch the video for instructions.
Thanks,

-Unseen Legions DIY

Comments

author
framistan (author)2013-07-13

This works OK, but people should be aware of a safety issue. Older TV's sometimes have odd chassis grounding methods. For this reason, it could possibly be a shock hazard placing any metal connection on the outside of the protective plastic case. Also, do not be tempted to connect this audio jack to your stereo amplifier for big speaker sound. The grounding issue may toast the TV or the stereo or both. If you want to connect to a big stereo, use an audio-isolation-transformer for that purpose and it will help eliminate any "hum" background sound coming from the speakers. This headphone jack idea may work... but just be careful with it people.

author

"You are absolutely right Framistan. I know that I've shocked the heck out of myself before mucking around on the inside of a TV & touched the wrong thing. Believe me, that's a mistake I'll only make once. Ive added a safety warning annotation, and one saying to check for an isolation transformer (If it doesn't have one, add it!) before wiring to the speakers. Perhaps adding an isolation transformer can be the subject of another instructable.

Thanks for the great comment!
-Ace from UL_DIY

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Bio: We're just a couple of guys who decided to combine our nerd powers for the purposes of showing people how to make awesome stuff.
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