PAM computer, Convergent?

From: Marvin <marvin_at_rain.org>
Date: Tue Jul 15 16:52:28 1997

jpero_at_mail.cgo.wave.ca wrote:
>
> > Yeah, but when those chip leads get corroded and all the aluminum
> > parts have this white, fluffy oxide all over them, and when you
> > see trails of oxide where the foil pattern *USED* to be, it's time to
> > hang it up . . .
> >
> > Jeff
> About this, do not forget about the leaking backup batteries for
> static memory settings...waaaah! Green jiggles where traces used to
> be...

I've run into the problem of leaky batterys corroding circuit boards
quite a bit, mainly on arcade games and computer motherboards where the
battery is soldered in place. As long as the corrosion isn't too bad, I
use Muriatic Acid, i.e. 33% HCl, and add it a drop at a time to the
affected area. After all the fizzing has stopped, I rinse it under the
faucet with cold water, dry it, and generally everything ends up fine.
If I am feeling particularly like doing the job right, after rinsing
under the tap, I'll rinse it off with either DI (DeIonized) or distilled
water. A couple of hours out in the sun or under a lamp completes the
job. Where traces have been eaten away, it is generally not too hard to
just replace the traces with wire wrap wire. Granted, it takes some
time but it can be worth it.
Received on Tue Jul 15 1997 - 16:52:28 BST