Help with HO-10

[charles w. morehouse]

Sandy,
I am restoring one now. Check for +90vdc on pins 2 and 7 of the tube.
Looks like a problem with the front panel switch. Luck and 73.
Wayne;
W4GBW


Sandy W5TVW wrote:
>
> I have a very nice monitor scope that I am having trouble with.
> Everything works fine except I cannot obtain a 1 kc or 2 tone
> signal output. The tube (6J11) checks very good. I don't have a
> spare to check with. All underneath looks fine. Any thoughts?
> Thanks, Charles
>
> I'd bet my bottom dollar that the "Couplate" integrated circuits
> are bad.
> These are the things that look like big rectangular ceramic
> capacitors.
> They form the RC networks for the phase-shift oscillators.  They
> can
> be fabricated with individual resistors  and capacitors.  It's
> been
> years since I had the values, perhaps someone one the reflector
> may know what they are.
>
> 73,
> Sandy W5TVW
>
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