Re: WG 6100 cap replacements

Hey, am I the only capacitor nut here? (going back under a rock)...

Well, if you want to test the capacitor you can compare the AC in with the
DC out and the ripple present under a steady load.

Or you can use an ESR meter, or you can solder a second capacitor ACROSS
the suspect to see if you get better filtering.
This is ONLY done for primary supplies, and must NOT be done for caps that
are used as pass, timing, etc. unless you understand the effects your
actions. So if you think the cap is suspect grab a cap with the same or
less capacity and measure the AC ripple before and after you bridge the
second one in. If it drops dramatically - like from 1.0VAC to 0.3VAC, then
I would suspect the cap is bad. A small change is to be expected, say
0.7VAC to 0.5VAC if you double the capacity...

Now would someone else like to do the math?

John :-#)#

At 12:30 AM 12/05/01, you wrote:
>Well I have a deflection board with LV2000 that seems to be giving me a bit
>of an irregular voltage out under draw. I was HOPING that those two caps
>would take care of the problem. Sounds like I should try fishing in another
>lake. I have verified that it is in the deflection board.
>
>Common John your the #1 source of the low ESR suggestion for the HV cage,
>any comments on that? :)
>
>
>----- Original Message -----
>From: "John Robertson" <jrr@flippers.com>
>To: <vectorlist@synthcom.com>
>Sent: Tuesday, December 04, 2001 6:15 PM
>Subject: Re: VECTOR: WG 6100 cap replacements
>
>
> > I agree with XBXoXbX'XsX Rodger's (I MEANT Rodger) posting, these two caps
> > rarely fail, and they are difficult to remove without causing some damage
> > to their rivets as well.
> >
> > Don't go looking for trouble. You have a vector game. (Are those
>statements
> > mutually exclusive or what? ;-)
> >
> > John :-#)#
> >
> > At 01:31 AM 12/04/01, you wrote:
> > >...
> > >
> > >The two main board 4700 uF caps that Zanen doesn't replace will probably
> > >never need replacement because they were heavy enough to handle their
> > >ripple current. Unless they are actually causing you grief you might as
> > >well leave them alone.
> > >
> > >
> > >
> > > > David Shoemaker wrote:
> > > >
> > >...
> > > >
> > > > The Zanen kit does not replace ANY caps on the power supply board. At
> > > > minimum I want to replace the two filter caps
> > > >
> > > > C100 4700 uF @ 50V (AE)
> > > > C101 4700 uF @ 50V (AE)
> > > >
> > >...
> > > >
> > > > David
> >
> > --------------------------------------------------------------------------
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> >
>
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Received on Thu Dec 6 10:26:44 2001