You will probably find just reseating the cpu can solve most of these
type problems. Some of them are just dirty corroded contacts, others
are just the heat cyclces shift the pin just enough to make or break
contact.

Clean everything and then try inserting and removing a couple of
times and see if it fixes it.

Dave


> If you don't have any warranty left on it
> try Ebay to search and buy similar board.
> ( At least people who sell similar stuff
>   so you can write to them if they have
>   your daughter board as well )
>
> Attempt to resolder processor pcb with
> regular oven most probably won't succeed.
>
>
>
> Anand Dhuru wrote:
> >
> > Hi folks,
> >
> > My Dell Inspiron 5000 started hanging recently. The problem increased
> > significantly, and now I cant get it to work even for a few minutes at a
> > stretch. At times it does not start at all.
> >
> > I eventually narrowed down the problem to the CPU daughter board, which
> > mates with the main motherboard by way of a 400(?) pin socket. The
> > intermittency seems to be on the daughter board. If I train a
> hair dryer on
> > the daughter board, the system invariably behaves itself the next few
> > minutes. I cannot see any obvious broken tracks (its a multi
> layered PCB),
> > or dry solder joints.
> >
> > I had heard of a technique involving putting the PCB in an oven to solve
> > these kinds of intermittent problems.
> >
> > My question is, does anyone have any expereince with this? How much
> > temperature should the oven be running? How long does the PCB
> go in? Is it a
> > good idea to wrap the PCB in an aluminium foil to trap the
> heat, while in
> > the oven?
> >
> > Or is it likely to damage the board even further, perhaps even
> melting the
> > plastic on board and dislocating the smd components?
> >
> > Any advice here would be highly appreciated!
> >
> > Thanks and Regards,
> >
> > Anand Dhuru
> >
> > --
> > http://www.piclist.com PIC/SX FAQ & list archive
> > View/change your membership options at
> > http://mailman.mit.edu/mailman/listinfo/piclist
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist