[sdiy] MCU Xtals

[Phil Macphail]

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.




> 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...
> 
> 
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