Hi David. So the issue I am having with the scope is the trace does not go
all the way across the screen of the CRT of my Tek 465B. The community has
helped me isolate the problem, thus far, to the horizontal amp section of
the scope. I have checked the voltages on all but the -2400 v power rail.
All check out to within spec so I don't believe the issue is with the power
supply. The next step is to start tracing circuits to see if I can isolate
the faulty component(s) in the system that are affecting the display.
Raymond suggests checking the various transistors on the board, which I
plan to do. It does appear that the transistors on my particular unit are
soldered in place, not placed in sockets.
From your email, it seems I can check the transistors while they are in the
circuit, which I will begin to do over the weekend. I assume the scope
needs to be powered on to make the voltage checks on the B-E and B-C
junctions. The service manual does have the pinouts so I will be referring
to the manual to ensure I am probing on the correct pins of each
transistor. I am also assuming that the transistors in question are easily
accessible on the bottom of the board.
