The buttons on my remote became unusable however hard you pressed. For the adventurous the following solution works real fine.
1.Remove battery.
2. Unscrew back plate(single Phillips screw) and take out circuit board.
3. You will see the 4 micro switches. Each has four black sealing patches. Cut these of with a SHARP stanley knife and take off the top part with the button on it. Careful
4. Remove the copper disk and clean the bottom side. I used brasso.
5.replace the copper disk and the top of the switch with the four holes aligned with the four pegs. Make sure it sits right down and seal each peg with a minute blob of glue. (Araldite rapid)
6.replace circuit board into holders and replace battery.
Good luck
bonders
November 2010