Talk about Repair HP2x keyboard membrane

[Zaphod]

http://home.citycable.ch/pierrefleur/Jac...W_main.htm

It could be a row or column of keys that has gone dead potentially of the row/column tracks damaged somewhere along the lines ? ... or is it possibly just one or two of the more extensively used buttons where the ‘dome’ switch has failed or maybe just dirt under the ‘dome’ switches ?

I guess a multimeter would quickly confirm which it is