Enterprise Forever
:UK => Hardware => Input devices => Topic started by: Tech on 2020.January.19. 22:48:34
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Some keys in my E64's keyboard stop registering inputs. It seems that the membrane is defective. I found replacements online, but the prices are quite high! I wonder if there's a way to fix the one I have without the need for a new replacement? Any ideas please?
Thank you.
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Hi!
Usually, old membranes have cracks near the end of ribbons.
You can try to carefully cut off damaged area.
(https://sites.google.com/site/enterprise128k/home/hardware/HW_KBcracks_1.jpg)
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It is usually broken at the motherboard connection. Cut the broken part (few mm), and it will start working again :-)
Repeat it when broken again... problem will come when the connecting tail becomes too short to be plugged in...
In this case build an expansion cable.
Membrane connectors:
Original types: MOLEX 5229-08CPB, 5229-10CPB
Chinese alternatives: CONNFLY DS1020-08ST1D, DS1020-10ST1D
At the motherboard connection I use Preci-Dip pin headers.
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Thank you guys. I'll check the connections and remove the damaged part if needed 👍
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high quality new keypad membrane made in Hungary 7200HUF = cc. 23EUR
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