The Myo XP uses an exposed rotary switch (Off/High/Low/Boost). Dust, sand, and sweat cause erratic mode switching.
Cleaning (non-invasive):
Full replacement (2021 part sourcing): 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.
Warning: Only attempt if you’re an advanced solderer.
Before diving into repairs, you must identify which version of the Myo XP you own. There are two distinct models: petzl myo xp repair 2021
Common Failure Points (2021 Reality):
Petzl’s official warranty is void after 10 years. No 2021 support exists. This is a DIY repair guide.
You won’t find “Petzl Myo XP repair kit” on Amazon. You need generic electronics repair gear.
Essential:
For Advanced Repairs:
Where to buy in 2021: Digi-Key, Mouser, AliExpress (for LEDs), local electronics surplus stores.
Since Petzl no longer supports the Myo XP, many 2021 owners are converting theirs to run on a 14500 lithium battery (AA size) or a small USB power bank.
Method A: 14500 Lithium Battery
Method B: External USB Power
2021 Recommendation: Stick with Eneloop NiMH rechargeable AAs. They are safe, cheap, and require no electrical engineering.
The Myo XP utilizes a three-battery (AA) configuration. The positive contact strips are spring-loaded probes, while the negative contacts are flat strips of spring steel coated with a conductive layer.