SB 610

[Larry Knapp]

Jerry - Besides the info from Floyd, there are also several hi value resistors
that may have gone out.  Opening up your SB-610 you should find some very
darkend resistors that are in the hi voltage circuit from the rectifier to the
crt.  I'd replace all of those with double the wattage.  If they are five watt,
replace with 10 watt...or 1 watt, replace with two watt.  These resistors are
undervalued.  The same with the capacitors.  These scopes require little work
once you find these components...pretty easy to work on.

Good luck....Larry KC8JX

--- Floyd Winters <fewinters at COMCAST.NET> wrote:
> Hi Jerry,
> My experience with the SB-610 and SB-620 HV are the two 1600V capacitors
> short and possibly take out the rectifiers.
>
> Fortunately, Allied Radio, Mouser and possibly other distributors have the
> parts.  Not cheap but work great.
>
> I hope that helps!! Floyd WA0FW
>
> -----Original Message-----
> From: Heathkit Owners and Collectors List [mailto:HEATH at LISTSERV.TEMPE.GOV]
> On Behalf Of Jerry Rego
> Sent: Sunday, July 25, 2004 2:18 PM
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: Re: SB 610
>
> Lost all the high voltage to my SB-610, Station Monitor.  Screen is totaly
> black.  The front panel pots have no affect.  Anyone out there that can give
> a hand would appreciate it, it is a good unit to own, and hate to just pitch
> it out.
>
> Jerry Rego





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