From: Paul Khoury (pkhoury_at_loop.com)
Date: Wed Aug 04 1999 - 11:34:35 EDT
On Tue, 03 Aug 1999 17:18:28 -0400, STeve Andre' wrote:
>Bill, I can't quite agree-- if the machine stays dead after the mainboard
>is replaced, you still don't know if the new mainboard was OK, or if you
>did damage to something else while in there, chaning it out. I've seen
>this happen numerous times with really small electronics; the original
>problem might have been fixed, but at the cost of something else. If
>the person doing the work is inexperienced at this sort of thing, its
>all too possible that they'll have zapped something else.
>
Sometimes, rather than the system board having a problem, the problem
might be the DC-DC board (the board that supplies power to the system).
I've noticed in some of the notebooks (ThinkPads and others) I've disassembled,
the area where the power conversion is happens to have burn marks or is non-functional.
Just my 2 cents...
Paul
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