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Got a Dumont RA-103 Dog(mouse)House and a GE monitor.
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01-10-2016, 02:44 AM
Electronic M
M is for Memory
Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 15,456
Quote:
Originally Posted by
Olorin67
Will be cool to see it come back to life, after I had stored it for 25 years...I don't suppose there's much hope of finding a schematic for something like this?
Wow, this set has been stored longer than I've lived...
If it was broadcast gear or the right person hung on to the schematic, then it might still exist someplace...Finding it is the hard part...I'm accustomed to flying blind on some projects (as I'm doing here)...
It now basically lives. I was able to test and replace all bad caps (except for the lytics) in 1hour and 5 minutes.
The Vitamin Q style caps were still good as new (as in previous encounters with those great caps) so I plan to leave them in. I proceeded to variac it up and was able to get a picture, but the sync and other things were not as stable as they should be.
I then removed the face and CRT to clean them and the chassis. I found the black mark in the center (that looked like ion burn) was just dirt, and that one of the lytics had got warm and peed it's self...I had time to test and replace (cause they were bad) all but the one insulated can (untested) and a small tubular lytic under the HV section (that tested good) which I may replace just for the heck of it. Tomorrow (well technically later today) those caps will be dealt with, the tubes will be tested and I'll put the CRT back in and give it a retest.
Quote:
Originally Posted by
Kevin Kuehn
That GE monitor is very interesting. So is that a GE 12KP4 CRT?
Yup! The set has it's (most likely) original GE 12KP4A, still going strong.
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