removing prom from memcal

[Bob Wooten]

I  wanted to install a socket & am good for overheating things so i took a
small pair of dikes & snipped the old prom out (i had downloaded the bin
prior).  now i grabbed the pins one @ a time & touched the end of it with
the same small iron as Shannen recommended.  as soon as you hit it with a
little heat out it pops.  to install a socket i took & bent the legs 90 Deg
out & dropped it into the hole that i just created.  again, hit it with a
little heat & a dab of solder & done.  The bummer here is that now it is
just a touch too tall to put the top back on the memcal.  this is nothing
that some racer tape wont fix though. not like anyone is going to see it
under the cover on the ecm anyway.  

Gentle men (& women), save the torch for another job.

BW


> [Original Message]
> From: Shannen Durphey <Shannen at grolen.com>
> To: <gmecm at diy-efi.org>
> Date: 1/9/01 10:37:51 PM
> Subject: Re: removing prom from memcal
>
> Hoo Boy.
> 
> I dunno why so many guys like to use stone knives and bear skins to do
> this job.  I have had great success using one of Rat Shack's 15? watt
> cheapie solder irons.  The pencil tip is just right for melting solder at
> the eprom pin / socket junction.  Apply some pressure to the factory
> solder joints with the iron and you'll feel the solder break and release
> the pins.  The old eprom can be carefully lifed out using a small
> screwdriver.  Sometimes a couple of pins will need to be re-heated as the
> chip is removed.  The solder doesn't always break completely.  A new chip
> can be pushed back in, a small amount of solder applied to the tip of the
> iron, and a quick touch to the intersection of each pin/base junction
> solders the joints back together.  This works extremely well for me, and I
> keep the soldering iron in the carry case with the eprom burner, in case I
> happen to get one of those blasted 27128 eproms which my Pocket Programmer
> doesn't seem to burn.
> 
> Shannen
> 
> Vance Rose wrote:
> > 
> > Hi
> > 
> >         Brutal method is to use dremel tool and cut main body loose,
remove pins
> > with needle nose pliers and sold iron. Wick socket clean, insert new ic
and
> > solder quickly. Trick is to be fast so as not to melt plastic.
> > 
> > Vance
> > 
> > At 09:49 AM 01/08/2001 -0600, you wrote:
> > >is there any special precaution I need to take when removing the eprom
from
> > >a memcal and soldering another one on there? Is there any 'easy' way
to do
> > >this?
> > >
> > >Craig M.
> > >
> > >
> >
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--- Bob Wooten
--- r71chevy at earthlink.net
--- www.r71camaro.homestead.com
--- 71-91 RS Camaro


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