On Mon, 7 Sep 2009 21:02:03 -0700, "Zootal"
<> wrote:
>"_dee" <> wrote in message
>news:.. .
>> I've got a P4C800-E that refused to power up again after being powered
>> down. Was working OK except for the clock going way off. Found that
>> the lithium battery was dead, but I'm not sure why. Perhaps something
>> in that part of the circuit was drawing way too much current.
>>
>> So, I had powered the system down to check and replace the battery.
>> Thought maybe CMOS config was getting munged. Unfortunately, the new
>> battery did not help, and that's the last it has powered up.
>>
>> Any recommendations for debugging?
>
Zootal,
I had a similar problem about a month ago with an old A7M-266D in one
of my backup systems. The system wouldn't boot up AND I smelled
smoke.
Turns out that two caps had leaked, one even had some orange "mush" on
the top and the other had a bulging top.
After I took the board out, I noticed that some of the "choke coils"
near the RAM banks were blackened and there was also some black
coating on a nearby cap. I had a spare board, so I moved the CPUs and
RAM to the spare board. The CPUs were OK, but all the RAM was dead.
Maybe my experience will give you some ideas about to look for with
your P4C800-E board.
-AH
PS: Despite general downward trend with Usenet, this group is still a
great bunch of guys who are knowledgeable. I wish I could "put back"
into this group as much as I get out of it.
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