clarifications:
- 7704A
- I want to keep being paranoid. I get too many beatings from snowboarding already, if i can avoid being zapped...
- Protection.. this is what happened: was working, then it was not. all lights off.
pushing and pulling the switch didn't bring on any lights.
switch pushed in off position, some 10 seconds later removed all plugins, pulled switch. no lights. pushed, removed power cord.
waited five minutes, plugged in power cord, pulled switch. lights come on (graticule illumination, pushbuttons). Green spot on crt at powr on, no more green from CRT.
There was no ticking. i talked of protection because i tought of ATX psus that shuts down for some minutes after an overcurrent
I did notice that left timebase didn't trigger from vertical source (but would from line. didn't use external so don't know) some minutes before the failure