A bodge I've seen on many boards over the years is that you cut the old IC out leaving the legs there. Then solder the new IC's legs to the old IC's legs.
Phil.
--- On Sat, 7/3/09, mrjdevries wrote:
--- On Sat, 7/3/09, mrjdevries wrote:
From: mrjdevries
Subject: [vintagesynthrepair] Desoldering / Resolderin IC's with no access to underside
To: vintagesynthrepair@yahoogroups.com
Date: Saturday, 7 March, 2009, 9:10 AM
I'm in the process of fixing up my semi working Delta Labs DL-4 delay, and making good progress.. I've fixed one fault (dying Tantalum)
and pretty much diagnosed another fault (Faulty 4011 CMOS).
My question is, with one of the PCB's, It's a total arse to get out etc.. too many jumpers etc.
This raised a small thought, if I cut out the old IC, and removed the remaining pins etc, and wanted to solder in an IC mount, do you think it would be possible to do it all with no access to the underside of the PCB?
I was thinking about getting one of those long wire wrap IC holders, cutting the legs a bit, and solder it with it's base a fraction above the PCB, and use the solder to 'wick' to the underside of the PCB.
Has anyone done this before? Any thoughts?
Regards
Mike