Nelson wrote in news:0001HW.C5B2BFB801179626F0182648
@news.astraweb.com:

On Fri, 6 Feb 2009 12:56:27 -0500, n8ball wrote
(in article
):

hi all...

any idea as what to check on these units?

i assume recap or at least look/smell around for burnt
electrolytics...

anything known to go bad on thes units?

any chance of getting a service manual?

cheers,

nate




The Official Apple Service Manuals are available from several different
sources online but they focus on problem isolation to the module level
and then replacement of the module. That is, all they will tell you is
to replace the power supply and tell you how to do it. I have never
seen a schematic of an Apple product after the Apple IIe... and I have
looked :-)

Have yet to hear from the owner, but I think I 'fixed' an Apple power
supply last week.

Symptoms: intermittent shutdown/lockup of the computer.

Opened it up, visual instpection. I saw a cap with the 'bulgies'.
Obtained a new cap with identical ratings (including temp) and replaced it.

If there are still problems, I will bring my ESR meter from home and
check/replace the rest of the bad caps.

I understand that many Apple power supplies are failing and the
replacements are expensive.




--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

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