From: Shawn R. Lin (slin01_at_mail.orion.org)
Date: Sat Jul 01 2000 - 12:53:43 EDT
burean wrote:
>
> I think my old 560 is ready to bite the dust. Last week the thing just
> died. I thought it was the power supply. Got a new one, and it booted
> right up. Last night I plugged in the mouse and it died on me again.
> Unplugged it, couple hours later it booted up.
> adjusted the screen angle, wham down it went. Now after overnight nothing.
> I'm beginning to think there is a crack or a short on the motherboard near
> the mouse port. It has done this in the past, but would always just
> reboot.
> anybody got a good MB or I'm gonna just part this sucker out and get
> another 560.
I had similar problems with my 560.
At first, any time I set the laptop down on the table a little too hard,
it would reboot. Then it got worse, to where any time I tapped on it in
the wrist-rest area, it would reboot. Eventually, it got to where
pressing the keys or even pressing the mouse buttons would cause it to
reboot repeatedly.
After disassembling it completely, I pulled the motherboard and put it
through some rigorous tests consisting of gentle tapping of every single
component trying to isolate the cause of the power cycling. I came to
the conclusion that it was some broken solder joints on the motherboard
side of the DC-DC converter board connector. I pulled out my pencil-tip
soldering iron and painstakingly resoldered some of the pins on the
connector.
Luckily, that fixed the problem! Judging by the amount of flex possible
in the 560's case, I would think that puts stress on the DC-DC converter
board's connector (especially on the motherboard side). It looked to me
like that would be a pretty common with the 560-series. So far it
hasn't happened to my 560X though. It wouldn't surprise me at all if
you have the same problem. Try a little tapping, if that makes it go
down, I'm almost sure that's the problem. You have to have a really
fine tip soldering iron, very steady hand, and a good deal of patience
to fix it.
-- Shawn Lin http://www2.cybercities.com/g/gmwbodycars/
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