[jeyurkon]

I was still having a problem with focus on the right hand side of the raster. Jr_tech's suggestion made the most sense so even though I didn't see a ripple in the screen bias I added, I decided to check it again.

I foolishly decided to try a different 6BD5GT HOT at the same time. I didn't get a raster and no HV. I checked the fuses and F3 was blown so no -125V.

I checked the 6BD5 I put in and it was at 100% where a NOS tube should be 70%. I probably should have reduced the horizontal width before turning it on. F3 used to be 1/4amp but they upped it to 0.3amps. Probably still marginal. Replacing it and going back to the first 6BD5 didn't bring back the HV though. I did all the tests I can without removing the HV assembly from the bridge and everything looks o.k. Fortunately the HV RF transformer seems good. That would really be unobtainium.

Maybe the 6Y6 went bad just by coincidence. Except for taking out the fuse, I don't see why the 6BD5 would make the HV go away. The heater of the 6W4 is isolated so a short there shouldn't matter either.

The radio works so the +170 and +180 must be o.k. I'll have to swap the 6Y6 and if that doesn't work, then start troubleshooting.

John

** I forgot, there was something else I did differently too. I had left the TV in the radio position when I shut the AC off. It was still in this position when I turned the AC back on. The HV section still has +170 and -125 supplied to it when the radio is on, but the filament of the 6Y6 is off. Maybe the 6Y6 didn't like waking up this way. Guess I'll find out when I sub it. **