First spot to inspect is the battery holder. Make sure the batteries are good, and that you've got good voltage heading out of them. The rapid off-on sequence, you have to do it REALLY fast.
Also check the voltage at TP7 on the CPU board, this is the test point for the battery power. You should see around 4 volts there.
If the voltage at the test point is good, but it keeps going into audit mode, then you need a new 5101 RAM chip.
-Hans