Update: I found C962, filter capacitor for the +8.6 V supply was shorted. Once replaced (original 840 uF, 12V replacement 1000 uF 10V), the power supply makes just one chirp, and the instrument starts working...kindof. I suppose the short on the secondary was causing extra current to flow in the primary, preventing the primary oscillator from reaching 43V at which point the oscillator's duty cycle would have changed such that it would be able to power itself.
Now I have jitter in the horizontal deflection. The B sweep delay pot seems to be able to calm it down, but it comes back. Intensity, focus, position up/down and right/left work. I suppose I'll figure out how to access the front of that pot to inject deOxit and if the problem persists, then start tracing the horizontal deflection signal back to the sweep generator.
Halden VE7UTS
