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echo: apple
to: comp.sys.apple2
from: Steven Hirsch
date: 2009-02-15 09:53:08
subject: Re: Flakey ZipChip 8000

Steven Hirsch wrote:
> James Littlejohn wrote:
> 
>>> This thing may not even have one more round of insertion left before 
>>> pins
>>> start breaking off, so I'm looking for advice on solving the 
>>> intermittant
>>> problem and mounting it permanently in... something.  What have folks 
>>> done
>>> with these things to get around contact problems?  Is there life 
>>> after broken
>>> pins?
>>>
>>> I can almost imagine a circuit board with a pair of 20-pin headers 
>>> and 40
>>> holes offset a bit so I can solder the ZipChip on permanently.
>>
>> I had foreseen this on my Zip chips and on Accelerators for the GS. I
>> desoldered the CPU socket and installed a ZIF socket on both my IIe
>> and IIgs motherboards.
> 
> Excellent plan!  I'll order up a couple of 40-pin low-profile ZIF 
> sockets forthwith.

Quick update and proviso:  A low-profile socket isn't going to work with a 
ZipChip!  The package extends too far on the ends and will interfere with the 
actuating lever :-(.  I'm going to have to go for the conventional ZIF socket 
with side-mounted lever.  That's going to neatly prevent anything from sitting 
in slot 3 and perhaps slot 2 as well.
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