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 2.GQ Geiger Muller Counter
 Screen Contrast Problem

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T O P I C    R E V I E W
Bob Posted - 09/09/2020 : 07:58:07
Hi All,

My GMC-300 is working fine except for the screen contrast. It doesn't matter what value I set it to, it stays with good contrast for about 5 minutes and then reverts to a washed out appearance.

Any ideas what might be happening?

Thanks!
7   L A T E S T    R E P L I E S    (Newest First)
Bob Posted - 11/15/2020 : 03:34:32
I have created a new topic regarding the loudspeaker issue here:

http://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=9440
EmfDev Posted - 09/23/2020 : 13:18:44
Yes please let us know if this is consistent.
Bob Posted - 09/23/2020 : 06:43:10
I have applied the new firmware and it has solved the screen contrast problem. However, I can see that it still periodically seems to reset (as per the video I made) and today the sound, which was previously set to 'Off' came on again. I have set it back to Off and will monitor it to see if it happens again.
Bob Posted - 09/16/2020 : 07:04:15
Thanks, I have sent you an email via the forum's email system.

quote:
Originally posted by EmfDev

Hi Bob, thank for uploading a video, looks like it is a bug. Can you email me your serial number? We will send you an updated firmware to that will fix this one.
EmfDev Posted - 09/14/2020 : 11:40:52
Hi Bob, thank for uploading a video, looks like it is a bug. Can you email me your serial number? We will send you an updated firmware to that will fix this one.
Bob Posted - 09/13/2020 : 03:16:55
Thanks EmfDev for your reply.

In order to give you the most complete answer I can I have made a video to show you what is happening. It is posted here:

https://youtu.be/dnuuqrZbw3Q

After the contrast erroneously resets itself about 50 seconds into the video, and after I reset it to 40 again, nothing happens for 10 minutes so you might like to skip forwards to about 10:50 to see it reset itself again.
EmfDev Posted - 09/10/2020 : 09:45:15
Hi Bob, does the contrast level from the menu change also when the screen contrast change?

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