CTC-16 combo

[DaveWM]

well, I checked the drive wave form good PP correct shape, then checked the voltage again, this time with my vtvm, hmmm does not go neg, double check with a VOM same thing, I think I was using the DMM and was seeing a +v grid not a -grid, damn digital displays. Well I smoke the DMM when I had it in resistance mode and connected to B+ argh so not sure what it is, but forsure the HOT grid has a positive bias. I let the tube cool off and, pulled the HOT and hooked up to the grid, the instant I plug in I get a surge of +vdc on that grid. It drops as the horz osc warms up. I figure the .01 coupling cap from the horz osc to the HOT is leaking. Will check that next. I just hope I can do it with out too much in the way of pulling the chassis out. Thats one thing about combo that can be a bear, all the extra wiring.