[sdiy] SMT rework?

[Paul Perry]

>>rework..I've got an industrial PC with an IDE controller chip that's 100 pin
>>SQFP, and I'd love to know how to get it off the board and put another one on
>>(without a SMT rework station...) The idea of a heat gun crossed my mind, but
>>I'm not sure it's hot enough.
>>
There is a type of low melting alloy that you can use to 'dissolve' the
solder off.
The idea is, it has a very low melting point, so it stays fluid long enough to
get the offending chip off the board. Also the melting point is not sharp.
Then I guess you mop up  the remains with soderwick.
DISCLAIMER: I havn't done this myself. But, it is a known product.

paul perry melbourne australia