We have a Philips PM3335 combiscope which has begun to get startup
problems, the LCD shows all characters, and CRT is blank (seems like a
uController not initialized)
When the scope is switched off and in fast sequence switched on again,
it most often comes up. I have looked at several signals to the uP
(8032AH) especially the RESET line, but I can't see anything obvious.
We don't have a service manual for the scope
Any tips are welcome.

Stein-Olav Lund
Trondheim, Norway
Service engineer