Subject: Re: Multia repair
To: None <port-alpha@NetBSD.ORG>
From: Joseph Sarkes <>
List: port-alpha
Date: 06/07/1998 22:16:12
I also have a multia that is starting to be flakey, and measured the
resistor packs with a fluke. The resistors all read fine, no variations
between any section, so i suspect a different part is failing. I will look
at the E215 part but since i haven't had the unit open while operating/failing
i have no idea what actual part is causing the system to lock up. 
Does anyone have any idea whether the cpu is cooled well enough without airflow
from the power supply (removed from the case with only the power supply leads
connected) as when i did this before, the cpu heatsink got very hot.

Greg A. Woods writes:
> [ On Sun, June 7, 1998 at 13:18:04 (PDT), David Seifert wrote: ]
> > Subject: Multia repair
> >
> > Hitting E215 (74F623D) with freeze spray works wonders.  I'm guessing
> > this part doesn't get much cooling due to its location and slowly fries
> > itself.
> That chip definitely has a distinct hint of browning at the centre in
> both my dead Multias.
> Are you saying though that you did not have any problems with *any* of
> the resistor packs?
> If so then that should give me enough initiative to order a couple of
> those chips too and see what I can do (they're much more readily
> available than the 20-pin resitory networks).
> -- 
> 							Greg A. Woods
> +1 416 443-1734      VE3TCP      <>      <robohack!woods>
> Planix, Inc. <>; Secrets of the Weird <>

Joseph Sarkes