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 2.GQ Geiger Muller Counter
 GMC-300 - replacement for Wayeah KM12232K LCD
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leescratchwood

Austria
5 Posts

Posted - 08/03/2017 :  12:36:50  Show Profile  Reply with Quote
I have purchased a GMC320+V5 recently and wanted to sell my old GMC-300. I have now noticed that the display starts to fade away on the upper right hand side where the battery symbol is placed.
The LCD is a
Wayeah LCM (2012.05.16) KM12232K.
Where can a get a replacement for a good price?

Best regards,
leescratchwood

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Reply #1

flukeguy

USA
13 Posts

Posted - 08/03/2017 :  16:45:46  Show Profile  Reply with Quote
Hi,

I really don't know the construction of that model, but sometimes there is an elastomeric (flexible) connector between the circuit board and the display. If the pads get a little dirty or corroded on the board or display this could cause symptoms on the display. Remove the connector and clean the pads with a pencil eraser. This has happened many times on my digital test equipment and was solved.

Hope this helps,
--Terry
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Reply #2

ZLM

1261 Posts

Posted - 08/04/2017 :  22:12:23  Show Profile  Reply with Quote
The old GMC-300 used a different LCD module and it is hard to find the replacement.
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Reply #3

leescratchwood

Austria
5 Posts

Posted - 08/07/2017 :  09:28:48  Show Profile  Reply with Quote
Thanks for your help to all of you.
Attached is a picture of the display.
The PCB says KM12232K. As ZLM points out they are rare, indeed.
I am quite sure, that these here are identical:
https://www.yoycart.com/Product/543418795196/
(have a look at their specification/description)

I have ordered 2 pcs from them. I will comment after receiving the display if my problem really gets solved.


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