| Installing the AppleSqueezer GS [message #416339] |
Thu, 25 August 2022 18:18  |
magnusfalkirk
Messages: 224
Registered: October 2012
Karma: 0
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I got the AppleSqueezer GS in the mail yesterday. Opened it up and read through the instructions on installing it today. Was trying to use a small flat bladed screwdriver to pry up the 65816 and was unable to budge it. Would I be better off buying a chip puller tool to extract the cpu with, or is there some other way to do it? From what I can tell the 65816 doesn't want to come out very easy and I don't want to screw up the computer by using too much pressure to get it out.
Any suggestions, thoughts, ideas will be appreciated.
magnus
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| Re: Installing the AppleSqueezer GS [message #416343 is a reply to message #416339] |
Fri, 26 August 2022 08:59  |
Steven Hirsch
Messages: 798
Registered: October 2012
Karma: 0
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Senior Member |
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On 8/25/22 18:18, magnusfalkirk wrote:
> I got the AppleSqueezer GS in the mail yesterday. Opened it up and read
> through the instructions on installing it today. Was trying to use a small
> flat bladed screwdriver to pry up the 65816 and was unable to budge it.
> Would I be better off buying a chip puller tool to extract the cpu with, or
> is there some other way to do it? From what I can tell the 65816 doesn't
> want to come out very easy and I don't want to screw up the computer by
> using too much pressure to get it out.
>
> Any suggestions, thoughts, ideas will be appreciated. magnus
A small screwdriver is definitely the best approach. When a 40-pin chip has
been in a socket for 30+ years it tends to cold-weld itself in place and can
require a surprising amount of force to break it free. I would suggest
placing the screwdriver "off center" and close to the pins. Prying from the
middle pits you against both sides at once.
Another thing occurs to me: Are you sure you have the screwdriver blade
between the chip and the socket? I've lost count of the number of times I've
had the blade between the socket and PCB when working without magnification
and good light.
Once you get a corner lifted work back and forth between ends and "see-saw" it
out.
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| Re: Installing the AppleSqueezer GS [message #416345 is a reply to message #416343] |
Fri, 26 August 2022 09:48 |
magnusfalkirk
Messages: 224
Registered: October 2012
Karma: 0
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Senior Member |
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On Friday, August 26, 2022 at 7:59:40 AM UTC-5, Steven Hirsch wrote:
> On 8/25/22 18:18, magnusfalkirk wrote:
>> I got the AppleSqueezer GS in the mail yesterday. Opened it up and read
>> through the instructions on installing it today. Was trying to use a small
>> flat bladed screwdriver to pry up the 65816 and was unable to budge it.
>> Would I be better off buying a chip puller tool to extract the cpu with, or
>> is there some other way to do it? From what I can tell the 65816 doesn't
>> want to come out very easy and I don't want to screw up the computer by
>> using too much pressure to get it out.
>>
>> Any suggestions, thoughts, ideas will be appreciated. magnus
> A small screwdriver is definitely the best approach. When a 40-pin chip has
> been in a socket for 30+ years it tends to cold-weld itself in place and can
> require a surprising amount of force to break it free. I would suggest
> placing the screwdriver "off center" and close to the pins. Prying from the
> middle pits you against both sides at once.
>
> Another thing occurs to me: Are you sure you have the screwdriver blade
> between the chip and the socket? I've lost count of the number of times I've
> had the blade between the socket and PCB when working without magnification
> and good light.
>
> Once you get a corner lifted work back and forth between ends and "see-saw" it
> out.
Thanks for the response. The first time I tried I put the blad all the way down on the motherboard and then took a better at it with a flashlight. Since then I've made sure to have the blade between the chip and the socket, since there is a little overhang with the end of the chip. I'll keep working at it and definitely work from a side instead the middle of the chip.
Thanks again,
magnus
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| Re: Installing the AppleSqueezer GS [message #416359 is a reply to message #416345] |
Sun, 28 August 2022 21:14 |
magnusfalkirk
Messages: 224
Registered: October 2012
Karma: 0
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Senior Member |
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> Thanks for the response. The first time I tried I put the blad all the way down on the motherboard and then took a better at it with a flashlight. Since then I've made sure to have the blade between the chip and the socket, since there is a little overhang with the end of the chip. I'll keep working at it and definitely work from a side instead the middle of the chip.
>
> Thanks again,
> magnus
On Fri I had an offer for from Ed Eastman to help remove the 65816 cpu from my GS. I didn't have time on Fri and most of yesterday I was otherwise occupied. Today was when we were going to try and work on it. This morning I found a video from here:
https://www.youtube.com/watch?v=yzDwnR7yAeM&t=11s
That showed him removing the cpu. I actually started working this two days ago with a small flathead screwdriver, it didn't help at all. After seeing this video I switched to a normal flathead screwdriver, like he used, and was able to remove the 65816. I don't know if using the smaller one first helped or not, but at least I did get it removed. Getting the AppleSqueezer Gs seated in the socket took a little work, but it finally was in. After starting it up I now have a GS running at 14MHz and with 14MB of memory.
Thanks to everyone who offered help and I'm happy to have my GS set up like I want it. Besides the AppleSqueezer I have a Darksound card and a CFFA3K, which I have had since the first or second run that Rich Dreher made.
Also thanks to Niek for making this great device. I've wanted an accelerator for my GS for a long time but the price of both the ZipGS and TranswarpGS were more than I felt I could afford.
Dean
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