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Fix the light guide in a laser meter
Over time I bought a few PLEM 50 Laser Meters from LIDL/Parkside. Most of them worked flawlessy.
I almost constantly get "Error 255" messages at almost any distance and conditions (I am apparently not alone, judging on feedback on this and similar devices). The error is related to a problem with the sensor (low signal or so) and is expected at long distances, or in bright light. Moving the lightguide with my finger helps making some correct measurement, but the device remains flaky.
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