[John Marinello]

Originally Posted by everstan

Hi John,
My Zenith, with the same chassis as yours, is called the Tennyson...very similar but mine has the doors.

There is a 4th wire that emerges from the cup the socket sets in. It comes from #7 pin of the 1B3 and it is this one that stumps me. I currently have it just emerging from the little slit and soldered to the cup. Like a shunt connected with the 500pf/20K doorknob cap below. Not sure if that is right.

The HV anode has no output and the yellow boost wire off the flyback is putting out less than 300v when it should be putting out about 525v. The 6W4 damper is likewise deminished. The horizontial output tubes should be putting 30v on pins 5 & 6 and they are putting out nothing. B+ is about where it is suppose to be at 350V.

All new tubes and completely recapped.

I did disconnect the flyback from the yoke and it rang okay.

I'm lost. Shouldn't the flyback be putting out 525v regardless of other circuits if it is good?

Stan

Stan,

I hope these photos help.

-John