RE: BU406*D*

Well, it has been changed -- but I don't know if it was soon enough -- I
don't know how long or what the previous owner did w/ the board. I'd rather
not smoke-test the board any longer, so I'm going to eval each component on
the -24v side.

In looking at the schems, if the BU406 did smoke the HV trans, it would be
the 1-9 winding, right?. While I'm testing, I'll check windings 4-8 and
9-10. Is there a particular resistance I should be checking for on these
windings? BTW: it has the WINTRON in it.

Finally, how do you test the magnetic correction assembly? Open is bad?

Thanks

> -----Original Message-----
> From: owner-vectorlist@synthcom.com
> [mailto:owner-vectorlist@synthcom.com]On Behalf Of John Robertson
> Sent: Saturday, May 19, 2001 1:18 PM
> To: vectorlist@synthcom.com
> Subject: Re: VECTOR: BU406*D*
>
>
> If there is a damper diode (not a 1N4007, needs to be a FAST
> diode!) across
> the Emitter/Collector of the BU406 then there should be no problem. If no
> diode then I would change it IMMEDIATELY!
>
> You don't really need a LOPT tester unless you run across a bunch on
> monitors or have a small pile of XY transformers you want to check...
>
> John :-#)#
>
> At 11:44 AM 5/19/2001 -0700, you wrote:
> >I'm working on my NW SW HV PCB and just noticed that the
> previous owner (an
> >op) had replaced the BU406D w/ a BU406 -- thank you very much.
> >
> >Fortunately, I've got a BU406D that I can toss in there, but I'm
> wondering
> >what harm this caused. In the repair faqs, it indicates that
> this *may* fry
> >the HV trans...
> >
> >Any thoughts on this?
> >
> >I don't have a LPOT tester (yet -- I guess I need to break down
> and buy one,
> >right John?).
> >
> >Thanks
> >
> >---
> >Bret Pehrson
> >http://www.vaps.org/members/nv/bret@classicade.com.html
> >mailto:bret@classicade.com
> >
> >-----------------------------------------------------------------
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Received on Sun May 20 02:33:52 2001