[PleaseEatEggs]

Hello all, first time here! I’ve recently decided to try to repair my fathers GDM-20E21 monitor, which has been sitting in a corner for about 12 years now after it suffered a power supply issue. The picture would take longer and longer to appear, until it stopped.

I have taken the thing apart to look at the G board, and nothing seemed awry, but I replaced the fuse and a suspicious varistor anyway. I reassembled it and hoped for the best, but alas. 

When the monitor is powered on, the power light is solid green for a few seconds, and then the power saving light flashes orange. After pressing the power button, there is a 1 second delay and then a high voltage click can be heard. After two seconds, another, and after two more, a third. After this, there is nothing. The screen never lights up at all. 

I’m quite stumped on this thing. Nothing seemed to be wrong inside the case as far as I could tell, but then again I cannot really find documentation or service manuals for this exact model. Any help would be greatly appreciated, as I’d love to get this thing working so I can plug our Octane into it.

Thanks again!