This worked perfectly for my Yamaha RAV451 remote - the power on/off button had stopped working unless you kept it pressed for a long time, with this guide I managed to prise apart the control (needs force and determination, you will inevitably leave some scratch/gouge marks) and found that where the on/off button was located on the printed circuit there was an "oily" mark, cleaned this off with cotton wool and lens cleaner and then clicked just the top part (where the button is located) back together, to test the repair. Worked perfectly now, so I clicked the rest of the unit back together and replaced the battery compartment screw - very happy, thanks very much !