Re: Apple //c Sporadically Crashing into the Monitor

["Bill Garber" <willy46pa@comcast DOT net>]

"Stephen Adams" <sea4929@earthlink.net> wrote in message
news:Timfc.7180$l75.205@newsread2.news.atl.earthlink.net...
: Bill Garber wrote:
: > "Michael J. Mahon" <mjmahon@aol.com> wrote in message
: > 20040414152114.17367.00000399@mb-m16.aol.com">news:20040414152114.17367.00000399@mb-m16.aol.com...
: > : Bill Garber wrote:
: > :
: > : >It could be that the RAM expansion cards pins has
: > : >deformed the sockets in which the CPU and MMU have
: > : >to return to. What you can do is replace the sockets
: > : >one at a time in the motherboard, if you have the skills,
: > : >and see if this remedies the situation.
: > :
: > : I agree that deformation of the sockets is the
: > : most likely cause.
: > :
: > : If you'd like to avoid the tricky desoldering job,
: > : though, you can simply "piggyback" your CPU and IOU
: > : chips on two 40-pin machined pin sockets, which will
: > : plug securely into the main board sockets.
: > :
: > : You must use _machined pin_ sockets for this to work.
: > : They cost a little more (a buck or two) but this is a much
: > : safer repair than desoldering unless you have special tools
: > : and some experience.
:
: The suggestions about the deformation of the motherboard's
: sockets makes sense. I remember that when I reinstalled the
: CPU and MMU, they just sort of slid in a bit too easily.

This was also one of the gripes people had when removing
accelerator cards from the IIgs.

: I went back and removed those two chips for a closer
: examination. The first thing I noticed was the amount
: of tarnish on all the legs. I used the old ink eraser
: trick to remove the crud. Then, I carefully bent the
: legs out slightly all the way down both chips
: (straightening out a couple on the end that weren't
: exactly straight). When I reinserted both after these
: actions, they both "clicked" in, taking only slightly
: more pressure to seat. After closely looking around and
: not seeing any bent or broken pins, I closed up the case.

I've had great luck with a very fine emery board. Of course
you don't want to go too strong with that. Works great on
the card edges too. Makes them look brand new.  8o)

: The Apple //c has now been running for seven hours
: straight with no crashing!  :)

Excellent. ( pats self on back in congratulations )  8o)

: > He may also have to remove the keyboard brace for this
: > to be effective as well.
:
: I didn't notice any keyboard brace installed on
: my //c. Perhaps you're thinking of the //c+?

No, the IIc, and naturally it was removed when the
expansion ram card went in. didn't you save it?

[ snips extraneous info ]

: Thanks to all who offered assistance. It was appreciated.

You are so very welcome.

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa @ comcast DOT net
Change DOT to a dot to contact me



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