Home▸ Forums▸ What would cause an SE/30 CRT to gradually fade in and out?▸ What would cause an SE/30 CRT to gradually fade in and out? Thread What would cause an SE/30 CRT to gradually fade in and out? What would cause an SE/30 CRT to gradually fade in and out? Hardware 4 posts Jun 26, 2015 — Jun 27, 2015 View original thread ↗ #1 Fri, 26 Jun 2015 - 21:04 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? #2 Fri, 26 Jun 2015 - 21:06 Some kind of filter issue? Oscillations in the power not being blocked? #3 Fri, 26 Jun 2015 - 23:11 i would probably hit the caps int he AB and PSU first... also i seen strange things when UE8 gets all goo'd up. #4 Sat, 27 Jun 2015 - 13:18 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.
#1 Fri, 26 Jun 2015 - 21:04 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?
#3 Fri, 26 Jun 2015 - 23:11 i would probably hit the caps int he AB and PSU first... also i seen strange things when UE8 gets all goo'd up.
#4 Sat, 27 Jun 2015 - 13:18 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.
