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 2.GQ Geiger Muller Counter
 GMC-300 out of warranty! (slowly dying...)

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T O P I C    R E V I E W
bifferidge Posted - 09/29/2016 : 08:33:49
Hello everyone, if my GMC has not been used in a while it appears to work beautifully for a few hours. It is in step with my Polimaster pretty closely....

But... after 2,3,4 hours it is clicking less and slowly diminishes to 2-3 uSv/h and then finally to 0.00sV/h after a few days.

Any suggestions?
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ZLM Posted - 09/29/2016 : 19:18:56
It seems it lost its voltage. It needs a service.

You can check the tube voltage. If the voltage is OK, then the tube may need to be replaced.

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