Petzl — Myo Xp Repair 2021

Check:

Lithium batteries and modern LEDs have changed the repair landscape. In 2021, you can upgrade this old light to outperform many modern budget headlamps.

Tie a small, tight knot in the cable just inside the housing, or use a small zip-tie clamped firmly around the cable inside the box.

Article last updated: July 2021. Revisions made for part availability and safety practices.

The Myo XP uses an exposed rotary switch (Off/High/Low/Boost). Dust, sand, and sweat cause erratic mode switching. petzl myo xp repair 2021

A: Yes. 3x lithium AAA batteries produce 1.8V each (5.4V total). The Myo XP circuit can handle up to 6V. They will run for 4x longer than alkalines and never leak. This is the best 2021 upgrade for under $10.

Once you have the headlamp open and your soldering iron hot, you might consider giving your Myo XP a performance boost. Many owners have successfully upgraded the original LED to a much brighter modern equivalent.

: To provide strain relief and waterproof the entry points. Replacement Materials

Double-check your work against your reference photo to ensure there are no accidental solder bridges creating a short circuit. Step 6: Create Strain Relief and Waterproof Check: Lithium batteries and modern LEDs have changed

If the issue persists, open the battery pack. The terminals snap out, allowing access to the solder points for the wiring. 2. Replacing the Battery Pack

Instead:

. However, the most common failures—flickering or power loss—are often caused by a broken internal wire where the cable enters the lamp housing. Common Fixes Cable Repair

Cut your new flexible 2-core cable to match the length of the original wire, adding about two inches of slack. Article last updated: July 2021

Once repaired, consider these upgrades:

Petzl issued warnings against using AA lithium batteries in early MYO models, as they can cause the unit to overheat or short circuit . Stick to alkaline or NiMH rechargeables unless you have the later "RXP" version. Deep Review: Is it worth repairing in 2021? HELP! Petzl Myo XP malfunction - UKC Forums - UKClimbing

Myo XP models came with a battery pack positioned either at the back of the headband (standard version) or on a belt clip (belt version). The remote belt pack allowed the weight to be carried on your waist rather than your head, which is a tremendous advantage over long periods. It also protects the batteries from cold, as the pack can be worn under clothing.