[Fwd: Re: Anyone out there with some SB-610 experience?]

[Charles W. Morehouse]

> Steve,
> Have restored several 610, 620 and HO's.  While you are replacing
> those caps, also replace all the resistors and the diodes in the HV
> circuit.  Use two .05 mf 1600v
> Orange drops from Antique Electronics to make a .1 mf.  The diodes are
> 583-R200F at $0.35 ea from Mouser.  Use Mouser 1% metal film
> resistors   The effort is well worth it.  73.
> Wayne;
> W4GBW
>
> Steve wrote:
>
>> I received advice from several guys on the reflector mailing list and
>> hereby offer my thanks.
>>
>> By way of update . . . the recurring theme through the responses I
>> received was to replace the capacitors in the 1430V power supply. The
>> thinking is that those capacitors are surely leaky after 30 years and
>> the extra load they place on the power transformer can damage the BLU /
>> YEL 600VAC secondary winding. Since I had a failure in that winding of
>> the power transformer to start with, it may be that those caps were
>> leaky fifteen years ago!
>>
>> It seemed like good advice, so I will replace those three capacitors
>> with the hope that my new used-transformer will survive and the higher
>> voltage will make for a brighter trace on the screen.
>>
>> I'll post the results to the reflector.
>>
>> Again, thanks to the several of you who offered advice. I'd still be
>> knocking around in the dark without your help!
>>
>> 73,
>> Steve
>> K8JQ
>>
>

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html