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is anybody having schematic diagram with signels for any p4 laptop?

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In the 10 years I have been working on laptops,. I have NEVER seen a
schematic for ANY laptop, none whatsoever. I doubt they actually exist,
at least in anything like a service manual format technicians are used
to. There are probably rough engineering drawings over in Taiwan in a
filing cabinet somewhere, but I have a feeling that looking at a bunch
of parallel lines from a 32 bit processor is not going to do me much
good anyway. Even if I can figure out that the problem is a loose
connection on pin 117 underneath the video chip, what good is that
infomation going to do me anyway? I can't replace it with the
technology I have at my disposal. A partital schematic of the power
regulating system would be nice once in a while to maybe fix a charging
problem, but even those "Giant" sized components are not easy to replace
without damaging the delicate traces.

Ardell Faul
Computer Monitor Service Inc.
Ardell's Laptop and PC Repair
10816 E. Mission Ave.,
Spokane Valley, Wa. 99206
ardell%40icehouse.net">ardellicehouse.net
509-891-5188

Jijeesh UrooPoyil wrote:

> is anybody having schematic diagram with signels for any p4 laptop?
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--- In Laptop_Repair%40yahoogroups.com">Laptop_Repairyahoogroups.com, "Jijeesh UrooPoyil"
<jijipremamrutha...> wrote:
&gt;
> is anybody having schematic diagram with signels for any p4 laptop?
>

The biggest problem I find with modern laptops is BGA solder defects
I guess due to lead free solder.

Which is what Ardell was hinting at in his post about knowing pin 117
on a big IC is defective.

There are schematics about on some laptops and if I have the one you
want I would certainly send them to you.

Unlike others who only want to trade so they can sell them on their
own comercial sites.

If you have a particular model you are intereted in please let me
know.

Rich

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