Garmin Edge 800 - Replacement Power Button

My 8+ year old Garmin Edge 800 had still been working pretty well, battery life _just_ able to handle a 200km ride, but the rubber at the power button disintegrated earlier and was basically loose in the shell.

This probably isn't a long term fix, and 8 years has been a good run, so I'll likely replace soon, but I threw this together to get me by while I decide what to buy.

To disassemble the Edge 800, a Torx T4 is required. Remove the 6 screws from the back, and carefully remove the front plate. Note: the front plate contains the touch sensor, separate from the screen, and there is a connector on the bottom which will separate. Next, remove the 2 screws holding the screen to the PCB. You do not need to remove the screen, but the screws also hold the PCB to the shell. Now carefully remove the PCB - it is held in place to more electronics below with a connector like the touch screen. When re-assembling, the PCB will easily connect back to the shell. When putting the face plate bac