Vintage Synth Repair

Yes, soldering the leg of a wire-wrap IC socket should work.  Usually the through-holes of a PCB are plated in the area of the hole itself if the board has traces on both sides.  The new solder will alloy between the socket pin and the plating metal on the side of the hole.

  If the PCB is single-sided then this might not work. If the socket pin fills the hole then the melted solder will not flow around the socket pin and contact with the trace pad on the other side of the hole.  Applying too much heat with the soldering iron tip may cause the pad to lift from the fiberglass surface of the PCB.


--- On Sat, 3/7/09, mrjdevries <mrjdevries@...> wrote:

> From: mrjdevries <mrjdevries@...>
> Subject: [vintagesynthrepair] Desoldering / Resolderin IC's with no access to underside
> To: vintagesynthrepair@yahoogroups.com
> Date: Saturday, March 7, 2009, 1:10 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
> 
> 
> 
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