Hi,
this is well known to me, and the voltages seen more than good from the first moment.The subject is that I didn't give the proper attention initially in a low ripple at the + 5 volt line.
Now with the new replaced diodes, some things on screen changed for the better.
A small ripple on the beam during the cold start up disappeared. The same the beam from the cold start up appear immediately and not after 20 seconds. Even the thickness of the trace is now thinner after the warm up time of oscilloscope.
I'm just unfortunate who the diodes were failed by such a rare way. :-\
