Author Topic: Trimmer Pot Autopsy and Repair  (Read 482 times)

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Online Cyberdragon

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Trimmer Pot Autopsy and Repair
« on: May 18, 2017, 10:22:30 pm »
I found out why these upright trimmers fail. It appears to be that the plastic knob is rubbing off some sort of conductive coating causing a high resistance or break where the knob touches the track. (shown by the two light colored bands on the track). You can repair them by applying a very thin solder bridge across the break, as long as it doesn't get in the way of the knob.
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