[miniman82]

K, so I finally had more time to look at this.

I have now ruled out the power supply as a failure source. I have disconnected the following items from the power supply, to try and isolate the current drain:

Everything on the 285v 'IF' rail. Nothing in the audio or IF sections is getting power anymore, I accomplished this by disconnecting pin 2 on the ballast.

I disconnected the tuner from the other 'normal' 285 rail so the only things getting power are the sweep circuits, video (Y), chroma paths and whatever convergence circuits may still be hooked up.

I am putting a composite signal from my gen into the grid of the 6CL6 to get video and the set again has a nice color picture, but read on.

Still getting the hot ballast, so I started looking hard at the horizontal section. Oscillator still had some wax caps in it, but replacement did nothing. Adjusted the wave shaping coil for equal peaks (it wasn't far off to begin with), no change. HOT is drawing 225ma (cathode), too much for my comfort. Tube data sheet for the 6CB5 says 220 is the safe limit as a deflection amplifier, so I have to get that down somehow. Messing with the drive adjustment won't get it low enough, and the lin coil is set correctly.

Grid bias on the HOT is high by 16 VDC: should be -56, but I get only -40 on the meter. Also, with the HOT pulled, I get a perfect waveform on the scope. Putting the HOT back in causes the waveform to become sort of flat-topped, which I don't think is good. I could be wrong, but I believe this means it's being driven as hard as possible and may be drawing excessive grid current. This and the high grid bias are likely related, but I can't figure out how.

At this point, I have subbed out the HOT, damper, shunt reg, horizontal osc, and vert output. None had any impact at all. The fly windings are in the ballpark with the resistance values called out in Sams, so I have a hard time believing it's got a shorted turn.

Only tubes I can't sub are the 3 rectifiers, since I don't have any 3A2's. Only thing I have left is maybe the shunt reg is set incorrectly, sucking away too much power from the HV. Wayne says he will stop by with his HV probe tomorrow evening, so we can check. Beyond that I'm not sure where to go next, short of cap shotgunning and a test of all the tubes left in the chassis.