My Mi Trimmer Repair Didn't Go As Planned | part 1

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In this video, I attempt to repair a Xiaomi rechargeable trimmer that suffers from a severe battery backup problem. Despite being fully charged (showing 4.5V), the trimmer only runs for 1-2 seconds before shutting off and indicating a low battery.

Step-by-Step Repair Process:
1. Initial Inspection:
The trimmer is fully charged but fails to operate for more than a couple of seconds.
After disassembling the unit, I discovered a small 3.7V, 600mAh battery, which is insufficiently sized for replacement with a larger 18650 battery due to space constraints.

2. Battery Testing:
Using a multimeter, the battery showed 4.51V, and further testing with a capacity tester confirmed it was functional (485mAh).
To rule out the battery as the issue, I tested the trimmer with a known good battery (4.16V), but the problem persisted.

3. Circuit Board Examination:
A red sticker on the circuit board raised suspicions of water damage. Upon closer inspection, corrosion was found and cleaned using thinner.
Despite cleaning, the trimmer still exhibited the same behavior—shutting off after 1-2 seconds of use.

4. Conclusion:
The issue appears to stem from the circuit board, likely damaged by water exposure. Even after cleaning corroded areas, the fault remains unresolved.
Without a replacement circuit board or advanced diagnostics, this repair seems unfeasible.

Call for Help:
If you have any ideas about what might be causing this issue or how to fix it, please share your thoughts in the comments below!

This video highlights the challenges of repairing compact electronics with suspected water damage. While this particular repair was unsuccessful, it offers valuable insights into diagnosing battery and circuit issues.

If you enjoyed this troubleshooting session, please give it a thumbs up, subscribe to my channel for more DIY repair videos, and share your thoughts in the comments below. Your support helps me grow the channel and continue creating content!

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Your query:
Troubleshooting a Xiaomi Rechargeable Trimmer with Battery Backup Issues
Mi Trimmer Repair करने की संपूर्ण जानकारी | Only Mi Brand Step By Step Repair In Hindi
mi trimmer not working | mi trimmer repair | how to repair mi trimmer | mi XXQ02HM
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