Re: Flakey ZipChip 8000

[James Littlejohn <narguthru@yahoo.com>]

On Feb 15, 2:37 pm, James Littlejohn <nargut...@yahoo.com> wrote:
> On Feb 15, 1:21 pm, Steven Hirsch <snhir...@gmail.com> wrote:
>
>
>
> > James Littlejohn wrote:
> > > On Feb 15, 8:53 am, Steven Hirsch <snhir...@gmail.com> 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.
>
> Here is a picture of the socket on my GS.
>
> http://8bitsystem.com/AppleII/ZIFGS.JPG
>
> Alteration was done with a Dremel. One of the hardware hackers
> favorite tools.

Lets try this again...
http://8bitsystem.com/AppleII/ZIFGS.JPG