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Old 07-07-2023, 11:51 PM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
 
Join Date: Jan 2011
Location: WI
Posts: 3,976
Thanks for the suggestions. Tonight I re-flowed the solder on most of the CRT board. Also replaced the 10uf @ 350 volt electrolytic. That cap looked toasted and had leaked out, but now I'm still getting the same systems. The 3.6M and 1.8M divider resistors are very close to spec. The hi-low jumper below the yellow G2 control is currently shorting across the 3.6M resistor, but when moved to the low position there was very little change to the picture. The 251v source to the CRT board is only reading 20-40vdc when I vary the G2 control. I need to investigate further to see why it's this low. It's difficult to show a true representation of what the picture currently looks like because my camera keeps blanking it. I wish the set had a brightness control, but so far I'm not seeing anything obvious. If it's on one of the modules I could have easily missed it. User controls are very sparse.


Last edited by Kevin Kuehn; 07-08-2023 at 12:20 AM. Reason: Added more info
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