focus rectifier sub.

[DaveWM]

have a zenith, Recently I have noticed the focus is getting intermittent, will be ok, then shift out, come back etc...

I have never seen a stick go bad, as the sets I have worked on either had a bad focus or it was ok, so I am guessing this is how it starts to go bad.

Anyway, I think I am fresh out of Se sticks so was thinking about stringing 7 1kv Si diodes together and giving that a try. have discussed this with Dan, we kicked around the dropping of Se vs Si but I was wondering if anyone has actually tried it?

I am sure there are 10kv Si diodes out there which would make it cleaner but I would have to order them vs picking up something at rat shack.