How do I fix membrane keys?

Thorogrimm

16 May 2020, 21:35

I've recently received an Olivetti ANK27-102 from Ebay and the space bar along with the B and N keys have stopped working after some use. It was working briefly a couple of times but then suddenly decides not to. I've checked the ribbon connector inside and noticed scratches on the contacts, so I snipped the worn parts off for fresh ones to be used. Still no improvement. The PCB is sandwiched together with the membrane and the capacitive sheet so I can't clean the actual contacts themselves if that's what the issue is. Does anyone have any ideas on how to fix this? I still have yet to give into the idea that the keyboard is simply near the end of its lifespan because the switches feel so good on it and every other key works fine.

I've thought about dousing it with isoproyl alcohol but I want some more professional advice on how to potentially fix this issue.
Thanks in advance!

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