Had a JVC remote, used alcohol to clean the rubber pads and the board.
This worked 5 or 6 times, although remote never worked as well as when
it was new.

When cleaning stopped working well, bought a bottle of conductive paint
from a local electronics supply house, and re-coated the rubber pads,
cost something like $10. This worked amazingly well at first, like-new
performance. But this stuff apparently is not as durable as the
original conductive coating. 3-4 months and I was having problems with
the remote again.

Finally gave up, went to the JVC website, and ordered an exact
replacement remote. $21 plus shipping. Should last another 3 or 4
years. Probably be wanting a new TV by then.

Hope this helps,
Jerry