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| What would cause an SE/30 CRT to gradually fade in and out? |
Posted by: olePigeon on 2015-06-26 13:04:11
I have an analog board that gradually brightens and darkens a CRT. It's cyclical and very regular.
Any idea what might be causing it?
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Posted by: TheWhiteFalcon on 2015-06-26 13:06:06
Some kind of filter issue? Oscillations in the power not being blocked?
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Posted by: uniserver on 2015-06-26 15:11:20
i would probably hit the caps int he AB and PSU first... also i seen strange things when UE8 gets all goo'd up.
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Posted by: techknight on 2015-06-27 05:18:19
Did you swap the CRT by chance? H-K shorts developing in the tube itself can do this. During the cycle, tap on the electron gun and see if it changes.
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