SB-610 problems

[Charles W. Morehouse]

Hi Rob,
Have restored a bunch of them and HO-10, 13's.  Replace ALL resistors, 
caps and diodes in the HV circuit.
You can find them all at Mouser.  Hope you didn't fry the tranny.  $125 
from Peter Dahl but worth it.
Luck and 73.
Wayne,
W4GBW

Robert Myers wrote:

>My SB-610 just stated to smoke.  It had not been in use for several years,
>but had been cleaned and working fine for a few weeks.  When I opened it I
>saw the 330K resistor between lugs 2 and 4 of terminal strip 'B' (underneath
>unit) was smoking.  The manual says that this could mean:
>
>1. D5 or D6 (both of them are selenium diodes) have become defective; or
>
>2. C606 or C607 defective; or 
>
>3. a transformer winding is shorted.
>
> 
>
>>From what I've heard, those HV capacitors going to terminal strip 'B'
>usually need to be replaced, so suspect it's them and they probably should
>be replaced anyway.  They are 0.1 uF @ 1200 VDC (x2) and 0.25 uF @ 1600 VDC
>(x2).  Does anyone know a good source for these that will fit in the old
>locations?
>
> 
>
>Is there a replacement or good source for those HV selenium diodes?
>
> 
>
>Thanks,
>
>-- Rob
>
>  
>

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