A1200 keyboard membrane and isopropyl alcohol (99.9%) is not a good combo

[solarmon]

So I was cleaning my A1200 keyboard. I took the keycaps off and thought it was a good idea to use a spray a load of isopropyl alcohol (99.9%) on it and give a good clean.

It certainly did give it a good clean. However, when I opened the keyboard to inspect the membrane I noticed that the the thin rubber-like layer had perished at the sides. I thought it was just because it was old.

So I thought I'd clean it up...with some isopropyl alcohol - so I sprayed a load more on and started wiping it. Then I realised that more green membrane bits were coming off, so I stopped and just let it evaporate off.

I put everything back together and it all seemed to work OK - the keys were working.

A few days later, I noticed that actually the tab and caps lock were not working. I have tested the other keys but not these, as they weren't used that often.

I opened it up and found that some of the traces for the Tab and Caps Lock key in the membrane had also perished.

I've just ordered some conductive varnish to try to repair the damage, before resorting to buy a new membrane.

So don't be an idiot like me and use isopropyl alcohol to clean your keyboard - specifically the membrane.

[Supamax]

Good to know, thanks.
Sorry for your membrane .