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 2.GQ Geiger Muller Counter
 GMC-300E Plus not counting the ticks anymore

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T O P I C    R E V I E W
leliep Posted - 11/25/2016 : 09:16:24
One day after checking the radiation that I received during a medical examination (176 uSv/h), my GMC-300E Plus produces the click sound and lights the green led, but does not count them anymore. the whole statistics values are constantly zero.

I did a factory reset as well as removing the battery for an hour, but still no success. What can I do?

Thanks for your support, -pl

6   L A T E S T    R E P L I E S    (Newest First)
Distelzombie Posted - 12/01/2016 : 03:35:47
OK, but note: You don't need to return the whole thing, I hope. The tube should be enough. Also, you could've bought another tube. The tube originally installed is not the best, and better ones do fit or can be made fit.
leliep Posted - 12/01/2016 : 02:55:10
I returned mine for a refund. Will buy a GMC-320+ instead, hoping that it will work longer...
Distelzombie Posted - 11/30/2016 : 08:47:07
A broken tube cannot be repaired, only replaced. A tube is broken if it has been working for hundreds of thousands of clicks and either suddenly stops or registers way way less clicks. It's a degradation effect. (since a "click" is a high voltage discharge.)
If yours is not like 3 years of constant measuring old, I think you should get a refund. But you'll not get a refund on used brakes for your car, so I don't know...
liberatorJ Posted - 11/29/2016 : 03:22:37
I have a similar problem. On the 2nd day, my 300E Plus stopped working - that is no clicks, no light on the the LED. I do have a display and sound when I turn it on, but after that, nothing. What constitutes a "broken " tube? How do I get it repaired?
leliep Posted - 11/27/2016 : 23:56:42
quote:
Originally posted by ZLM

Your GMC-300E tube may be broken.




I don't think so, because I can still hear the clicks, loud and clear. They're just no longer counted, averaged etc.
So from what I can see the Tube and the audio part still works. The display also works, but without counting anything. Flatline & all values are zero.
ZLM Posted - 11/26/2016 : 15:23:14
Your GMC-300E tube may be broken.

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