[sdiy] MCU Xtals

[Steve Lenham]

Yep, that would be better (as would pretty much anything). Initial 
search does not throw up a source, but it is like searching for a needle 
in a haystack made of those wretched diamond things.

On 23/08/2022 16:11, Phil Macphail wrote:
> Hopefully pictures work here, this is the tool I have for PLCC 
> extraction. No risk of breaking the socket and works better than cheap 
> “diamond” tools, but no idea if they are still made,
>
> Phil.
>
>
> IMG_4247.jpg
>
>> On 23. Aug 2022, at 16:28, Steve Lenham <steve at bendentech.co.uk> wrote:
>>
>>
>>>> If it's PLCC put thin screwdrivers in the slots in diagonal corners 
>>>> and just lever it out. It really feels like the chip would break in 
>>>> half any moment when you do it, but eventually it goes out.
>>>
>>> If you pry with screwdrivers too much, these sockets can crack, 
>>> especially if they're "vintage".
>>
>> +1 to that, although for "can" read "almost certainly will".
>>
>>>
>>> Best to get a proper PLCC IC extractor. They're not expensive.
>>>
>> I have had no joy with those at all. There seems to be only one 
>> design available - tiny hooks which are drawn upwards as you squeeze 
>> inwards on the diamond-shaped handle. I find that what happens is: 
>> nothing...squeeze harder...nothing...squeeze harder...hooks rip a 
>> chunk out of the bottom of the PLCC, leap out and score a nice deep 
>> scratch across the top of the IC for good measure.
>>
>> I've got a faulty Lexicon PCM80 here where I would really like to try 
>> changing the main CPU, but it is a 68-pin socketed PLCC and I can't 
>> get it out. I've tried, and the results were as described above! As 
>> far as I can see, you just need to treat socketed PLCCs as if they 
>> are soldered in, and desolder the socket with the IC still in it.
>>
>> I bloody hate PLCCs...
>>
>>
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at synth-diy.org
>> http://synth-diy.org/mailman/listinfo/synth-diy
>> Selling or trading? Use marketplace at synth-diy.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20220823/de527a20/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 25711FBF-D9A8-4FBD-AA6A-E0B722E767FB.jpeg
Type: image/jpeg
Size: 387280 bytes
Desc: not available
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20220823/de527a20/attachment.jpeg>