Great! The same thing happened to someone else on the list - just very recently. I think C82 was the culprit too :)
From: M100 <[email protected]<mailto:[email protected]>> on behalf of "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Reply-To: <[email protected]<mailto:[email protected]>> Date: Monday, August 19, 2019 at 9:18 PM To: <[email protected]<mailto:[email protected]>> Subject: Re: [M100] M100 display not working, all else seems good BINGO! That was it! C82 was one of the capacitors that had leaked and I replaced. Right in that same area is the trace between T23 (Emitter) and Pin 4 of the display connector. I checked and there was no continuity. I ran a new wire. Powered it up... and have a nice beautifully functioning display now! Thank you so much for your help. Another M100 returned to life! Chad On Monday, August 19, 2019, 10:52:31 PM CDT, Fugu ME100 <[email protected]<mailto:[email protected]>> wrote: On my machine it swings from about 1V to around 3.5V. The 1.25V is way too low I feel. Is there a good connection from T23 to pin 4? It sounds as if that line might be disconnect or there is a problem with the contrast voltage generation. Is VR1 giving a good voltage input? From: M100 <[email protected]<mailto:[email protected]>> on behalf of "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Reply-To: <[email protected]<mailto:[email protected]>> Date: Monday, August 19, 2019 at 8:24 PM To: <[email protected]<mailto:[email protected]>> Subject: Re: [M100] M100 display not working, all else seems good With one lead on Pin 4 and one lead on GND, it is maxing out at about 1.25v and goes down to around zero. Is this acceptable? Thanks, Chad
