Dying VaxStation 4000 VLC - help?

From: Tothwolf <tothwolf_at_concentric.net>
Date: Tue Nov 19 22:34:01 2002

On Wed, 20 Nov 2002, Tony Duell wrote:

> > How will I know what values to shop for for the capacitor (maybe not
> > so critical?) and the resistor? Is there a catalog of 1992 or so
> > surface-mount
>
> The capacitor will normally have the value marked on it. Either as
> something like '10u' or as a 3 digit number like '226'. The latter you
> read like a resistor code (22*10^6 in this case) and the base unit is
> _pF_. So 226 is 22uF, etc.
>
> I would be suprised if a resistor had failed, so leave that for the
> moment. If you can't decode the markings on it, then perhaps you can
> desolder it and measure the resistance out of circuit. Yes, I know it's
> faulty, but it works some of the time so you shuld be able to get an
> idea of the correct value.

I have a working VLC here that I can refer to for component information if
there is anything specific you need to know. The board itself is a 7 layer
board, so it wouldn't be easy to draft a schematic of the 3.3V regulator
and comparator section of the board. I can try taking a digital photo of
that area of the board if that would be helpful.

-Toth
Received on Tue Nov 19 2002 - 22:34:01 GMT