[sdiy] MCU Xtals

[Steve Lenham]

> Hm, I think these extractors are not too bad, at least for PLCC44, and 
> if you don’t have to pull lots of ICs per day. Of course there are 
> sockets that grip stronger than others, then it might become a problem.

Maybe I just have a bad one. They are so widespread that one must assume 
they occasionally work.

>
> Maybe these extractors are better, never tried one. Not cheap, though.
> https://shop.wetec.de/produkte/werkzeuge/hilfswerkzeuge/25701/wetec-plcc-ziehzange

Indeed. And they are specific to PLCCs with a particular number of pins, 
so you need a different tool for each size.

>
>> 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.
>
> How do you unsolder a PLCC socket with the IC still in it? Hot air?
> Or is that a PLCC socket with through-hole pins?

Yes, it's a through-hole socket. If I were removing an SMD PLCC socket I 
would probably deliberately break it into its four sides, then run 
solder down each row of pins to melt them simultaneously and float that 
side off.

Cheers,

Steve L.

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