On 8/23/2010 1:47 PM, Tony Duell wrote:
I suppose, as I'm the one asking for help here, that I'll take the
advice given and leave the rest without comment.
My comments on board-swapping were _NOT_ directed at you. Old-timers here
will know it's a perpetual rant of mine :-). Quite simply I can't see how
making random changes to a device until it appers to work again is in any
way actually putting it right.
However, I have been caught so often by making assumptions when doing a
repair that I have learnt (I hope) that it is best to assume nothing and
check everything. Even if you know the PSU is good, it's best to check it
when powering the computer. YOu may well think you know a switch is
working perfectly, this did not stop be being led on a merry dance one
afternoon when the paper-out microswtich in an HP printer clicked
perfectly but was in fact stuck _closed_.
Do you have a scheamtic of the machine? If so, is it on-line anywhere.
I'll fidn a way to take a look at it and suggest more tests...
-tony
Understood. Thanks for the explanation.
I'll check the PSUs with the multimeter tonight.
There's a set of Apple III schematics here:
http://apple3.org/iiischematics.html
I appreciate your assistance.
- Mike