Nokia 6600 Key Pad

Hi There

What UR suggesting is the Expensive and difficult way

The cheaper way to repair those buttons is to use a contact cleaner.
if you look at the keypad closely you'll see that at each button there is
a small hole in the white cover
(you'll see a small metalic part of that button comming trough)

now here's what I did:

I sprayed some electronic contact cleaner in a small cup.
took a screwdriver and dropped a droplet of cleaner in that hole
pressed the corresponding button a few times to get the cleaner underneath it
and to clean the contacts.
do that for each button and your keypad should be working as new again

afterwards take some toilet paper to clean of the excessive cleaner of your
keypad

and that's it😊 😊

Good Luck

Ton