[Boatanchors] Heathkit SB-610 monitor scope

[Jim]

Also, check the resistors in the HV circuit.  I found quite a few were far 
off value.

Jim

>
> Here's the lineup of critical caps for the SB-610:
>
> (2) .1ufd/1200v
> (1) .15/1600v
> (2) 10ufd/10v
> (2) 40ufd/350v
> (1) four-section twist-lock can:  30ufd/450v, 20ufd/400v, 20ufd/350v, 
> 20ufd/300v
>
> Try www.hayseedhamfest.com   I believe he has these in stock.
>
> Hope this helps.
> 73
> Chuck
> W4MIL
>
>
> Remember, the government cannot give anything to anyone that they have
> not first taken away from someone else.
>
>
>
>
> -----Original Message-----
> From: Rob Atkinson <ranchorobbo at gmail.com>
> To: Dick KF4NS <kf4nsradio at verizon.net>
> Cc: boatanchors <boatanchors at mailman.qth.net>
> Sent: Mon, Nov 7, 2011 12:51 pm
> Subject: Re: [Boatanchors] Heathkit SB-610 monitor scope
>
>
> what did you use for the p.s. caps, in particular the 1600 v. one?
> here did you get them?
> tnx 73
> Rob
> 5UJ
> On Mon, Nov 7, 2011 at 7:25 AM, Dick KF4NS <kf4nsradio at verizon.net> wrote:
> Decided to dig into it again since I had not done much with it since I got 
> it
> 002 and replaced all the
> power supply caps. Recent testing showed poor focus and low vertical gain.
>
> I found the two B+ diodes shorted. Wow, never saw any selenium rectifiers 
> that
> ooked like those two. The
> focus problem should be fixed after replacing the rectifiers and a few
> esistors. About those diodes, I
> will likely use a couple 1N5408s but the usual thing would be to series a
> esistor with each anode lead
> which is usually a good idea in power supplies with original seleniums. In
> his case though I wanted to
> get you input because I noticed that the capacitors are not electrolytic 
> and
> here shouldn't be the usual
> increase in voltage. What do you think? One chap has a solution online 
> whereby
> e used 4 1N4007s in
> series for each replaced diode which I guess he thinks will make up for 
> not
> sing series resistors.
>
> I also observed that the blue and yellow xfmr leads are reversed but don't
> elieve that should be a
> problem since we are looking at AC here and don't think secondary polarity
> hould be of concern here.
>
> I have a couple options here will take care of the vertical gain 
> situation.
> ot that covered.
>
> 73, Dick KF4NS
> St Petersburg, FL 33714 USA
> Keep The Glow!
>
>
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