[ltp] Memory problems on my AP21

[Constant Brouerius van Nidek]

On Friday 25 April 2008, Ted Frater wrote:
> Constant Brouerius van Nidek wrote:
> >After one of the two 128MB memory cards of my AP21 broke down, I found a
> > new Kingston 256MB module (KTM-TP390X/256) which according to Kingston is
> > the memory module for my machine.
> >
> >What I found out is that this module does not want to sit in the memory
> >compartment with its smaller Toshiba module. Depending on which I put
> > right or left it shows 64MB memory, 256MB or 128MB. Running the latest
> > memory test from Linux which shows the right amount of memory,  I end up
> > with thousands of errors within 5 minutes if both cards are found
> > together.  Reason why I have stopped that exercise.
> >If I run Memtest86 on each single card for an extensive period no errors
> > are showing up. Is it a known fact that mem cards of different sizes do
> > not mix or is there something else?
>
> I presume you mean a Thinkpad A21P?
>  Ive 2 of these and its a known fault with the mem slot solder joints on
> the motherboard are coming undone due to thermal? plastic deformation.
>  It can be resoldered by a competent motherboard technician in situ.
> the laptop doent need to be dismantled.
>  Other than trying 2 identical memory modules, theres not alot else
> youcan do.
>  The A21P will take 2 256mb modules. runs much beter with this mount of
> memory.
>  Hope this helps.
>  Ted
> Dorset
>  UK.

Thanks Ted, Yes, sure a Thinkpad AP21 ;).Gives me the direction for the 
solution. Have a good motherboard technician in the neighborhood. Will have a 
talk with him over the weekend.