The original switch is a custom Alps unit. No direct replacement exists. But the Bourns PEC11R series (15mm shaft, 12 detents) can work with a 3D-printed adapter.
“Original Petzl Myo XP repair kits” on eBay (mostly scams or decades-old leftover parts).
However, if the LED itself has failed, Petzl generally considers these units non-repairable, as the LEDs cannot be easily removed or replaced. petzl myo xp repair 2021
By 2021, the rubber power button on many Myo XP units becomes stiff or unresponsive.
Before diving into repairs, you must identify which version of the Myo XP you own. There are two distinct models: The original switch is a custom Alps unit
Then, steps to disassemble. I need to be careful here. How do you take apart a petzl belay device? Usually, there are screws that hold components together. Need to describe removing the cover, accessing the cam and pulley system. Maybe mention the order of disassembly to prevent parts from getting mixed up.
: The head unit is typically held together by four Torx T6 screws on the back . Once open, the internal PCB and LED are accessible, though space is tight. “Original Petzl Myo XP repair kits” on eBay
Wipe clean with rubbing alcohol and let it dry completely. Apply a tiny dab of dielectric grease to prevent future oxidation. Upgrades and Modifications
: Required to remove the four screws holding the headlamp unit together. Soldering Iron : Necessary for re-attaching wires or replacing the switch. Small Flathead Screwdriver