All Forums  GQ Electronics Forums  2.GQ Geiger Muller Counter  GMC320Plus won't boot up

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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 thaylock[/i] [br]Hello, I have the GMC320Plus purchased around 2016. I haven't used the unit very much or in a long time. I wanted to use it and charged up the battery, but it won't boot up. - I hold the power button for many seconds and it does not turn on. - I've checked the voltage of the LiIon and it reads 4.1 V, so the USB charging is working and it seems the battery is not damaged by being stored for a few years. - When I plug in the USB to a computer, it seems to be recognized (COM port detected in Windows Device Manager, but haven't done more debugging here). - When I plug into a computer, or charger, the backlight turns on for the screen, but nothing more. - I've tried with the unit plugged into a computer or charger, with no battery inside and still it will not boot. Any ideas what else I can debug? Thanks, Tom [/quote]    Insert an Image File Check here to include your profile signature.