OldSynths

The best (and most expensive) way is to get something like the Den-On 
SC7000Z:

http://www.howardelectronics.com/den-on/sc7000.html

  I bought one several years ago and it is by far the best tool I've ever 
bought for circuit board repair.  I've used it many times to swap out the 
40xx chips in CS-80s.  Once you use one there is no going back.

  I would suggest #80-4-5 solder wick made by Chemtronics as the cheap way
to go.  Some solder wicks are terrible, mostly due to wrong mesh size.  
The one I indicated is a good size for desoldering chip leads.  I think
Digikey still sells the Chemtronics line.

Crow
/**/

On Sun, 12 Sep 2004, rorymcd@... wrote:

> Hi: Can someone advise the best way to desolder chips from a circuit
> board? I am working on my CS-60 and want to replace 40xx chips with new,
> but dont want to do more damage than good. I will be putting in sockets
> in their place to make repair easier in the future.
> 
> Is there a good method or desolder tool that heats the whole chip at
> once? The only other way I know is to clip off the leads, remove the
> chip, and then desolder the remaining pieces of lead from the board.
> 
> Please advise (Crow??)
> 
> Regards
> Rory McDonald
> OLDSYNTHS MODERATOR