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Old 08-25-2017, 01:08 PM
FrankieKat FrankieKat is offline
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Join Date: Feb 2012
Location: Brooklyn, NY, USA
Posts: 42
Quote:
Originally Posted by jr_tech View Post
Are the power supplies to the video output and audio output stable and quiet?
Yeah, all new electrolytics - Nichicon 105 deg, 500V caps replacing the original 450 and 350 volt can sections. Replaced the original candohm with two 10W power resistors as well and the B+ lines are all within 3 volts of schematic. My DVM locks right on and they are stable, but I'll scope them all and look for any ripple or odd noise too.

Quote:
Originally Posted by jr_tech View Post
Is the external dag coating on the crt in good shape and grounded well?
Interesting question! The grounding spring is tightly in place and overall the coating looks in good shape, however it is a little scratched where it makes contact with the tube - see attached pic. Would that be enough to cause a problem? Recommend trying to bend the spring so that it contacts in a slightly different place?

FK
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File Type: jpg west-dag1.jpg (77.4 KB, 20 views)
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