Silvertone CTC15/16: attack of the clone!

[Electronic M]

Well as some may be aware my Silvertone roundy has been on the fritz.

I got a chance to pull the back off today, and I now know that the HV is low. It varies between 0 and aproximatly12KV depending on what I unplug from the HV line, and how the set feels on a given power up. There is a raster (sometimes with synched video) on the brief instant after power up. The first grid of the horizontal output tube grid is running at about -48V sam's calls for -60, the the second grid is running between 85V-90V (I'll elaborate on this) sam's has it at 140V, and the third (beam power) grid is reading 44V where sam's calls for 35V.

The second grid is at 85V with the yoke connected and 90V with the yoke disconnected. The HV goes from 6KV up to 10KV when I disconnect the yoke. Also the focus is strongly diminished and boost is wiped out as soon as I connect the yoke. Disconnecting the yoke is the only thing I've tried that affects the second grid voltage (shorting across the resistors that feed the second grid had no effect on the voltage). I also tried two other roundy yokes which gave me the same result.

Aside from what is noted, and a bad resistor on the second grid that was changed I'm not finding any bad parts or anything out of the ordinary.

Does anyone have any ideas? I feel like I'm running out of things to test.