Repairing a Toshiba Satellite 5105

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I am trying to trouble shoot and repair an old Toshiba Satellite 5106.  This
is my first attempt to fix a lap top and it is sort of a learning experience
really.  At first I thought I was dealing with a heat issue in that the
computer died after being on for a little while (or I thought it did).  The
screen would become 'pixilated' and blocky and froze up.  If I left it on
for a while, the screen slowly turned dark with whitish clouds around the
edge or the computer would try to reboot with the same result.
My first attempted fix was to replace the heat sink fan and the CPU.  I was
able to get the computer to run for several hours and was pretty happy, but
then it started to do the same thing again.

So now I am trying to think of some other things that might be wrong with
it.  Could there be a failed video card, or perhaps a problem with the
battery?  I just wanted to ask if anyone might have some ideas about what
could be wrong with this computer.

Re: Repairing a Toshiba Satellite 5105

There might be some help here... 'Disassemble, repair, take apart,
upgrade, clean Toshiba laptop or notebook yourself.'
( /) clicking the link should open in a new

Many a strange fault can be caused by the ribbon cable to the display
panel, sometimes  re-inserting it helps many a strange fault.. but you
need to be real careful because they only use very thin silver foil as
the conductors, the conductors are easily bent or damaged if not
inserted straight.

One thing you could try if at all possible is to hook it up to an
external monitor, this will prove if it's a display panel problem or
not, if it's the same then it's further down stream the graphic card for


Re: Repairing a Toshiba Satellite 5105

Thanks for the terrific link!

I hooked the laptop up to another monitor and had the same issue.  On the
other hand, I did boot in safe and managed to get the system to run.  Having
already opened the computer up and replaced the CPU and fan, I checked those
connectors pretty well.  I am inclined to think that it is likely the video
card.  Is there any other way to test for a bad video card?

Many thanks!

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Re: Repairing a Toshiba Satellite 5105

ry by substitution is about the best, either try a known good one or try
the suspect elsewhere, at least by trying a monitor you proved its not
the dispaly and the fault further down stream, the graphic being the
next hurdle to clear.

Sometimes removing and refitting might help, the contacts is onlt gold
plated on copper and both are soft, with the pressure of the contacts
and the heat the could become faulty.

Graphic cards can give boot problems... all you need for bios to boot
is the CPU, RAM and Graphic card the rest can be disconnected even the
hard drive and you'll still be able to gain access to the bios set up
screen if you wished.

Here's another link that 'may' prove handy..


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