SB-610 help

[Schichler, Alfred]

I have an SB-610 that has a very dim trace on the CRT, compared to other
ones I have seen, and I was wondering if that is typically caused by the CRT
itself, or is there some other part (s) that might cause that. I found
several resistors in the high voltage circuit that were way off, so I
replaced them, and now it is a little better than it was (at least the focus
works better), but not nearly as bright as I would like. 

Also, the tone generator does not work at all (either tone). I tested the
tubes, and the 6J11 in that circuit read a bit weak and a bit leaky, so that
might be the reason for that, but I was wondering if there is another common
problem that might cause that.

Thanks for any help,
Al, NE2D

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