[LinuxBIOS] different versions of the GA-M57SLI-S4 (PLCC vs SPI)

[jtd]

On Monday 10 September 2007 03:54, Peter Stuge wrote:
> On Sun, Sep 02, 2007 at 08:13:24PM +0200, echelon at free.fr wrote:
> > > * what Q4-1, Q5-1, R99-1 and R102-2 connects to on U5, if
> > > anything.
> >
> > Q4-1 -> U9-CS#
> > Q5-1 -> U5-CS#
>
> On Sun, Sep 09, 2007 at 11:14:40PM +0200, todthgie wrote:
> > >> 1. Lift the U5-CS# pin from the board.
> >
> > maybe thaere is a resistor of 0 Ohm (maybe R509 ?) between the
> > Superio and U5?
>
> Possible, but someone will have to spend some time checking
> connections on the board to find it. Really tedious work.
>
> It's not R509 though since Q5-1 is U5-CS#, not Q4-3/Q5-3. :\
>
> > it might be easier and a LOT saver to unsorder a resistor the it
> > is to unsolder a singer soic pin .....
>
> I think lifting a corner pin should be doable for pretty much
> anyone with a little soldering experience but if you can find a 0
> ohm that's great! :)

A nice method of desoldering soic pins is to use a 26 swg enamelled 
copper wire. Pass the wire under the ic and between the pin. Tug the 
wire so that it slides under the pin while heating the pin. You end 
up with the pin clear of the board. Can also be used to remove the 
entire chip without damaging the ic or the board.


-- 
Rgds
JTD