Re[2]: Re: Motorola M7000 Troubleshooting

-----Original Message-----
From: "Joel Ricci" <joel@ricci.se>
To: <rasterlist@vectorlist.org>
Date: Mon, 30 Oct 2006 17:48:27 +0100
Subject: Re: RASTER: Re: RASTER: Motorola M7000 Troubleshooting

>
>
> >> I'm trying to fix the M7000 in my Sprint2 cab which has a very shaky
> >> and wobbly picture.
> >
> > very clear sign that all your smoothing caps are dead - change all the
> > caps.
>
> Well, I'm not sure. I measured with a DMM and the AC was close to zero.
> Haven't checked with a scope since I'm not sure my scope can take 90V (I
> don't have any real probes).
>
> Although the caps most probably are bad, shouldn't I still be able to change
> the volt level using the 73V Adjust pot ?
>

maybe, that is you could vary someting but your meter may be reading the peak voltage and not the rms.
if the caps are bad.

it is always worth checking the pot on something that old though,
you know if you play with the volume on something old it crackles? well it can do the same thing to regulators!

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Received on Mon Oct 30 13:14:34 2006