Re: Tempest help please!

How do I check for "ripple" with a digital multimeter? Thanks.

Rog

>From: "mccullar" <mccullar@flash.net>
>Reply-To: vectorlist@vectorlist.org
>To: <vectorlist@vectorlist.org>
>Subject: Re: VECTOR: Tempest help please!
>Date: Wed, 8 Oct 2003 19:01:38 -0500
>
> > 2.) While checking for power problems, I noticed that there is an
>immediate
> > voltage drop from the +5 edge connector pins to their respective
>contacts
>on
> > the board edges, which measure 4.89. Should I adjust the +5 pot on the
>AR
> > board to compensate?
>
>I wouldn't touch that pot yet. It sounds like you may have "heat rot" on
>the edge connector pins. With the power off, remove the cable harness and
>see how corroded the finger contacts are on the CPU board and auxiliary
>board. If they're corroded or dull, you can clean them up nice and shiny
>with an ordinary pencil eraser.
>
>That may not be the end of your problem, though. Make sure your +5 volts
>is
>nice and clean, with no ripple. Also check the interconnect cable
>connectors between the CPU board and Aux board for bad solder joints. That
>happens a lot.
>
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Received on Thu Oct 9 06:52:27 2003