All Forums  GQ Electronics Forums  2.GQ Geiger Muller Counter  issue - displays 0 everywhere

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by proseol[/i] [br]I have detector GQ GMC-500+, bought in August 2024. Few days ago, I got an issue with a device, that this started to show 0 CPM, 0.00 uSv/h, 0.000mR/h and null radiation with any settings - which actually cannot be so and there is clear, that something got wrong with the device. Battery is ok (we have also tested another similar battery) - in both cases the same result. We managed with device accurately. Visually this is like a new one. Also we have opened the backside and visually everything looks fine, all tubes are connected correctly, no any harm or damage. We have tried Turn off / turn on the device. Also tried to make Factory Reset. But these actions did not help. Tube1 Voltage displays 411 Volts (44%) Tube2 Voltage displays 41.33 % What can be the problem? How can we diagnose - what is wrong? [/quote]    Insert an Image File Check here to include your profile signature.