Quote:
Originally Posted by jr_tech
Are the power supplies to the video output and audio output stable and quiet?
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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
Is the external dag coating on the crt in good shape and grounded well?
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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
08-25-2017, 01:08 PM
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