Fob not working on unlock after doing all that dealer said to do to re-program

Ulinda

I have changed battery, taken fob apart and cleaned connections with rubbing alcohol, reprogrammed the fob. The fob will not verify when I hold down the lock and unlock at the same time over 30 secs. The dealer tech could not make it work. SO... is their any other thing to try before a 400.00 fix to replace the module??
Ulinda