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 2.GQ Geiger Muller Counter
 GMC 500+ stops counting when plugged in		  New Topic  Reply to Topic
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mvmaltese66

USA
1 Posts
Posted - 07/13/2025 :  15:35:58  Show Profile  Reply with Quote
GMC 500+ has recently stopped counting when unit is plugged in and powered. It counts with battery power but not when externally powered. Tried 3 different cables, outlets and no change.

NOW it cannot shut off when power button is held down. Have to take battery out.

ALSO realized the clock is now running slow.

Current firmware: 1.12

Any advice?
Edited by - mvmaltese66 on 07/13/2025 15:56:07
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