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echo: apple
to: comp.sys.apple2
from: Steven Hirsch
date: 2009-02-15 14:21:46
subject: Re: Flakey ZipChip 8000

James Littlejohn wrote:
> On Feb 15, 8:53 am, Steven Hirsch  wrote:
>> 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.
> 
> I purchased mine from Reactive Micro, Henry alters them to work with
> the larger chip package.

Would you mind taking a photograph looking straight down on the CPU?  I'm 
curious how that was modified.
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