My Colby power button and volume controls quit working. After taking it apart I found behind the buttons are printind circuits. I didn't need to take it apart. I used an exacto knife and peeled up the adhevsive front around the buttons. I used a small screw driver to hold the front apart from the tv. I used some tin foil and placed under the button. Too much tin foil makes a constant contact which you don't want. You just want enough tin foil when you press the button it makes contact with the printed circuit. Test your buttons. If fixed, press adhesive front back against the tv body.
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