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 2.GQ Geiger Muller Counter
 Screen Contrast Problem
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Bob

United Kingdom
7 Posts

Posted - 09/09/2020 :  07:58:07  Show Profile  Reply with Quote
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!

Ewan
Reply #1

EmfDev

2132 Posts

Posted - 09/10/2020 :  09:45:15  Show Profile  Reply with Quote
Hi Bob, does the contrast level from the menu change also when the screen contrast change?
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Reply #2

Bob

United Kingdom
7 Posts

Posted - 09/13/2020 :  03:16:55  Show Profile  Reply with Quote
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.

Ewan
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Reply #3

EmfDev

2132 Posts

Posted - 09/14/2020 :  11:40:52  Show Profile  Reply with Quote
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.
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Reply #4

Bob

United Kingdom
7 Posts

Posted - 09/16/2020 :  07:04:15  Show Profile  Reply with Quote
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.


Ewan
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Reply #5

Bob

United Kingdom
7 Posts

Posted - 09/23/2020 :  06:43:10  Show Profile  Reply with Quote
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.

Ewan
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Reply #6

EmfDev

2132 Posts

Posted - 09/23/2020 :  13:18:44  Show Profile  Reply with Quote
Yes please let us know if this is consistent.
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Reply #7

Bob

United Kingdom
7 Posts

Posted - 11/15/2020 :  03:34:32  Show Profile  Reply with Quote
I have created a new topic regarding the loudspeaker issue here:

http://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=9440

Ewan
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