Amiga 500 Keyboard membrane fix

kipper2k · 20 November 2017, 01:39

Hi all,

I had an a500 keyboard that wasnt working, the Return, delete and a couple others weren't working so i took a look and i found that some of the traces had disintegrated for whatever reason by the "Return" key. so after thinking on how to fix it i tried some thin wire and a nickel liquid pen.

I scraped the carbon pads a little to roughen them up, laid some wire, taped it in position and then applied the nickel. Let is sit for a few hours and am happy to say it is ALIVE!!

here is what i used...

https://www.digikey.com/products/en?keywords=841AR-p

Retrofan · 20 November 2017, 01:55

Thanks for sharing the info

26 March 2018, 11:52

Good information. I also have some keyboards to repair.

cmorley · 29 September 2018, 14:12

I had an Acorn A3000 keyboard membrane which battery leakage had damaged the traces on the flexi at the connector. The connector was completely ruined.

After reading the OP I tried a repair with a nickle pen (I have the MG chemicals brand).

First I cleaned off all the flaking traces from the flexi with IPA & cotton buds. I then repaired the tracks which push into the connector with the nickle pen. I did it under a microscope which made it easier to clean/paint. Leave it a few hours to cure and it worked perfectly.

The nickle flakes off a bit if you remove the flexi from the connector but that can be touched up. Seems like a good way to repair rare keyboards.

So it is possible to repair flexi-edge connections with a nickle pen! Thanks for the inspiration kipper2k.

20 November 2017, 01:39	#1
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	Amiga 500 Keyboard membrane fix Hi all, I had an a500 keyboard that wasnt working, the Return, delete and a couple others weren't working so i took a look and i found that some of the traces had disintegrated for whatever reason by the "Return" key. so after thinking on how to fix it i tried some thin wire and a nickel liquid pen. I scraped the carbon pads a little to roughen them up, laid some wire, taped it in position and then applied the nickel. Let is sit for a few hours and am happy to say it is ALIVE!! here is what i used... https://www.digikey.com/products/en?keywords=841AR-p

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20 November 2017, 01:55	#2
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,185	Thanks for sharing the info

26 March 2018, 11:52	#3
Trolley Posts: n/a	Good information. I also have some keyboards to repair.

29 September 2018, 14:12	#4
cmorley Registered User Join Date: Jun 2018 Location: Oxford, UK Posts: 66	I had an Acorn A3000 keyboard membrane which battery leakage had damaged the traces on the flexi at the connector. The connector was completely ruined. After reading the OP I tried a repair with a nickle pen (I have the MG chemicals brand). First I cleaned off all the flaking traces from the flexi with IPA & cotton buds. I then repaired the tracks which push into the connector with the nickle pen. I did it under a microscope which made it easier to clean/paint. Leave it a few hours to cure and it worked perfectly. The nickle flakes off a bit if you remove the flexi from the connector but that can be touched up. Seems like a good way to repair rare keyboards. So it is possible to repair flexi-edge connections with a nickle pen! Thanks for the inspiration kipper2k.

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