I know this is an old thread, but I wanted to add my experience in fixing the remote.
It is possible to fix, depending on the problem.
Mine was the power button was not turning on the remote anymore. I used a Dremel diamond blade to but the case open. I found where the cable between the front panel and the board went bad. The power to the front board corroded. The power button is different than the other buttons, and can't be swapped with another button. I ended up ordering a 12mm Boat Momentary Metal Push Button off ebay for about 1.30. I figured out that I need to jump pin 1 and 10. This is the power button does. I drilled out a hole for the button using a 29/64 bit drill bit. I was then able to screw the button in and solder it to the board.
I'll try to upload the pictures