Re: When should a power supply be declared Perma-Dead?

["Henry" <apl2research(.a.t.)comcast.net>]

Hey David.

I'm not much of a technician, but I believe your computer may have a problem 
when you can light a cigarette from it.  Of course if you have an old house 
with good fire insurance, this might not be such a bad thing. ;-)


-- 
Henry S. Courbis
www.GSE-Reactive.com
Apple II Series Legacy Hardware - Come take a look at what we have to offer!

"David Wilson" <mcs6502@gmail.com> wrote in message 
1148889570.843016.318920@i40g2000cwc.googlegroups.com">news:1148889570.843016.318920@i40g2000cwc.googlegroups.com...
> Henry (.a.t.) wrote:
>> Most cards will actually fry a trace right off the board in a nice cloud 
>> of
>> smoke before the power supply trips, unless it's a REALLY wide trace. 
>> Don't
>> ask how I know this! ;-)
>
> We had an Annex II Terminal server with an external ethernet MAU
> attached to the AUI (DA-15F) port which connected to the motherboard
> via a short ribbon cable. The MAU developed an internal short across
> the power rails and the Annex was able to supply enough power to cause
> the ribbon cable to catch fire... The power traces on the motherboard
> got hot enough to discolor but replacing the ribbon (and the MAU)
> returned it to operation.
>