Here we go.... (48G fixing and MEMORY UPGRADE)

[matthiaspaul]

(05-25-2017 09:22 PM)lemontea Wrote:  1) Would just heating and pressing solder wick against the pins work?

While this may work in some cases, I would recommend against it. Sometimes applying significant amounts of new tin before using soldering wick will do the trick, but in general soldering wick is best used to clean the pads once the part has already been removed or to remove short circuits in difficult to access areas.

In general, it is important to keep the heating duration as short as possible and to try not to apply much force to the pads, otherwise they may come off (the longer the soldering process the higher that risk). A rather common mistake is to apply a lifting force to a pin before the tin has become fluid already; this may easily rip the pad off the PCB.

Quote:2) What "fancy tools" are we talking about? You mean dedicated desoldering gear? (I actually have a solder sucker gun but wonder if it will "suck" too much in this case).

Professional desoldering tools include (de)soldering irons with dedicated heads to heat all part pins at once, however, they are expensive and of limited use without a head exactly matching the part to be desoldered. Hotair stations can be very useful as well, but if not used properly they can also cause damage to surrounding parts (they may start to "swim" or get overheated). While it is nice to have such equipment for more difficult problems, I would not use them for easy stuff like having to desolder a chip like this one.

Greetings,

Matthias