How to remove small PLCC chips from sockets

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ijor
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How to remove small PLCC chips from sockets

Post by ijor »

I have a hard time removing 44 pins PLCC chips, like those used for Exxos boards, especially from the Eprom Burner socket.

I have one of those generic PLCC extractors and it works fine with larger chips. No problem with chips like GLUE or MMU. But when trying to use it with the smaller chips, it feels like it is going to break the chip and/or the socket. At least it is like that with the Eprom Burner socket. Don't know if it's a tighter socket or what.

Is it worth to invest in one of those more expensive extractors that are specific for 44-pin chips? Like this:

plcc44_001.jpg
plcc44_001.jpg (60.37 KiB) Viewed 397 times

Or otherwise what is the recommended method.
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exxos
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Re: How to remove small PLCC chips from sockets

Post by exxos »

Good question. I've never been able to get those cheap extractors to remove any cheap. The metal is to soft and the hooks are not large enough. I tend to use them to lever the chip out side by side which isn't great and risks damaging the socket.

I've never found anything better. So I wonder where you found the one in your image ? It can't be any worse than the cheap extractors..
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rubber_jonnie
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Re: How to remove small PLCC chips from sockets

Post by rubber_jonnie »

My experience with the cheap PLCC extractors is that after relatively little use, the corners of the extractors round off due to being made of material that's too soft, and then they just stop working, and whilst you can file them to get the correct hook shape back, it's never the same. After that, it's time for the bin.

A decent puller like you've described would be quite useful.
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ijor
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Re: How to remove small PLCC chips from sockets

Post by ijor »

exxos wrote: Mon Oct 16, 2023 9:28 am I've never found anything better. So I wonder where you found the one in your image ? It can't be any worse than the cheap extractors..
Hakko PLCC extractor tools: https://www.digikey.com/en/products/det ... 68/9597288
http://github.com/ijor/fx68k 68000 cycle exact FPGA core
FX CAST Cycle Accurate Atari ST core
http://pasti.fxatari.com
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exxos
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Re: How to remove small PLCC chips from sockets

Post by exxos »

Thanks.

Just saw this , though confused how its supposed to be used :shrug:

https://kaisertech.co.uk/extractor-68-p ... UXzIC7VQkE

piergiacomi_plcc_68_extractor.jpg
piergiacomi_plcc_68_extractor.jpg (20.64 KiB) Viewed 334 times
piergiacomi_plcc_68_extractor_diagram.jpg
piergiacomi_plcc_68_extractor_diagram.jpg (20.14 KiB) Viewed 329 times

Seems somewhat contradictory :shrug:
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https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
elterwater
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Re: How to remove small PLCC chips from sockets

Post by elterwater »

Like so:

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exxos
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Re: How to remove small PLCC chips from sockets

Post by exxos »

:bravo:
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
ijor
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Re: How to remove small PLCC chips from sockets

Post by ijor »

Bought the small Hakko extractor and it works really great. A world of difference with the cheap universal extractors.
http://github.com/ijor/fx68k 68000 cycle exact FPGA core
FX CAST Cycle Accurate Atari ST core
http://pasti.fxatari.com
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exxos
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Re: How to remove small PLCC chips from sockets

Post by exxos »

ijor wrote: Fri Nov 17, 2023 8:43 pm Bought the small Hakko extractor and it works really great. A world of difference with the cheap universal extractors.
Thanks for letting us know. I'll have to get one of those at some point. Those cheap extractors are total garbage and always have been.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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