Re: EPROMs & mods, etc.

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On 15 Dec 1995, Glen Powell/SMC wrote:

> GREAT! I've got the technology. I can read/write the 2532 and the 2732. I'll 
> yank the CPU this weekend and desolder & dump the EPROM next week.
> 
> Any thoughts on the pros/cons of installing a regular socket or perhaps a ZIF?
Glen/bob,

	I desoldered the chip in the ECU of my '86 5KCSTQ, just in case I 
found out what to do.  I haven't gotten reall far with the mods, but I 
was successful in desoldering, and replacing with a chip socket.  I can 
now replace the chip if I ever find out how to change the contents of the 
chip.

	Be very careful that you get tehe new solder joint to go all the 
way through the board, as it is a double sided board.  Also, when 
desoldering, I used a  vacuum type solder-sucker.  After about 5 joints, 
I was pretty good at it. (not _THAT_ kind of joint:-)

	On my ECU, there was another board above the chip, so I had to be 
very carefull to mount the socket as low as possible on the board.

	If you have any questions, give me a call.  (810) 733-0255

HTH

Later,								
Graydon D. Stuckey								
graydon@apollo.gmi.edu								
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage II				
'85 Mazda RX7 GS 12A-leaning-towards-a-13B-soon