Thanks, before starting to look more in depth at the problem I was about to buy the blue one, you saved me a headache. However, now that I've been able to narrow down the issue to a single row I won't give up just yet.
P.S. also, I don't know how you were able to find that listing, I had previously made a few searches with various keywords but that particular listing never came up.
Up to you. But from experience, it is not worth the hassle. Once you repair that trace, you may have more traces fail.
As for the EBay search. Just used the search “A600 Membrane”.
The hard type membranes make the key presses more firmer in my opinion. That and the harder edge connector to push into the keyboard connector is a winner.
All the best.