Finished up re-cap job on the Sentinal sweep/display chassis, including selenium rectifier replacment. Chassis looks "wide open" but there are some caps that are difficult to get to, horiz oscillator is crammed against the chassis edge, under a wiring bundle and terminal strip.
Now I have a fairly decent, fairly stable pix, with a little bit of horizontal "jitter", HV is now about 4.5 kV, which seems a bit low, but I really don't know what is correct for this set...anybody know what it should be?
Ordered a NOS 6Y6 for the HV oscillator, and am going through about 50 6SN7s to find the best for the set. Will scope out waveforms to attempt to locate the cause of the jitter tomorrow. Perhaps I should re-cap the Airline sweep/display chassis next, to compare behavior/waveforms.
jr