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Old 05-08-2018, 10:49 AM
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bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,103
Good luck with it. I have recorded some footage but not sure when I'll edit and post it.

Here's how the CRT tests. Should produce a decent picture.


and a peek inside the HV box. Flyback looks to be in fine condition with not cracks in the insulation.


All the tubes have little sticky labels on them with the tube number. Odd since the original printed tube designators are quite legible. They all test good.


Replacing the electrolytics on the vertical output tube cathode bypass and boost circuit increased the height a bit.


I then removed a handful of vertically mounted caps from the PCB around the 6S4 vertical output tube. Seems like every one is a different manufacture and a few were leaky.

Replacing them got me full height.


After tweaking the height and linearity controls.


Next up - replacing these crispy crittters.
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