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geekhack Community => Keyboards => Topic started by: TheRavenDog on Fri, 12 June 2015, 01:12:40

Title: Need a membrane for a Unicomp keyboard
Post by: TheRavenDog on Fri, 12 June 2015, 01:12:40

My old-style PC104 Unicomp buckling spring keyboard (see below) was the victim of a huge coffee spill.

I took the board completely apart (a full bolt mod), carefully washed the three layers of the membrane, and re-assembled the board. But not all of the key still work. I pretty sure it's just one column that won't work.

Does anybody know the specific part number for the membrane. I opened a ticket with Unicomp and they said they don't stock the part. But they always say that, but when you ask for a specific part, they often times have it.

I'm looking for the membrane for this type of keyboard:
(http://i.imgur.com/FBDyV3T.jpg)

Thanks,

Chris Petersen.

Title: Re: Need a membrane for a Unicomp keyboard
Post by: E TwentyNine on Fri, 12 June 2015, 07:15:28

You've re-cased some other keyboard, because that's no Unicomp shell.

Unicomp usually stocks membranes for everything.  If you give them a picture of the old membrane I'd bet they would have it.  You may have to try more than one customer rep, you can get different answers.

But if the membrane was working before the mod you should go through it and see which pads fail, it's likely an easily repairable broken trace.

Title: Re: Need a membrane for a Unicomp keyboard
Post by: TheRavenDog on Fri, 12 June 2015, 10:15:45

It's a frankenboard: a unicomp pc104 assembled in an ibm case.

Good idea about sending a picture to unicomp. And good advice about testing the traces. I'll just test it out with a multimeter.

Thanks!