another zenith combo

[DaveWM]

a few more PP checks, 200v on the horz discharge tube plate, per sams should be 250 per zenith serv man 270v so I am back to thinking I am just not getting enough drive signal to the HOT. Guess I need to check some more caps/resistors around that circuit, not sure if I am on a wild goose chase but I bet this is why the horz width is down some. I check the B+ 350 was 325 I am going to check my line voltage in, I did not think that was a big enough amount of a diff. Prob should check the B+ current while I am at it.

Geez I hope its not something that simple (low b+).

[DaveWM]

GOT IT!!!

the little bastard, it was an open lytic on the red lead of the vert out. That is where that pesky pincushion pulse is taken from. It was part of one of the can caps, so I guess its time to just go ahead and restuff them all. I know this would not have been an issue if I had just shot gunned the cans but then I would not have learned nearly as much about how things work. I checked the waveform of the screen grid of the HOT, before there was a vert freq wave riding on the DC, but it had a lot of hash in it. I jumped that cap and sure enough the top pulled in and the vert wave on the screen of the HOT cleaned up (no hash at all). The amplitude of the wave also decreased. If the darn sams had a scope patter on it for that HOT screen I would have been able to narrow it down a LOT faster. Anyway one more thing to know to look for when trouble shooting.