Aquabot junior issues

by Joey L.
(Slidell, La)

hey! my aquabot junior is about 3 yrs old, it started moving kinda jerky...12" then stop 12' then stop then reverse and do the same. it cleaned but didn't get all around the pool for about a month then stopped completely although it still sucks dirt. I removed the motor assembly (DM#5510) and when i opened it there was water inside and the circuit board is corroded. I cleaned best I could and let it dry, now when power is applied I get a red flashing light on the board but no motor movement although it does not feel locked up. Is there a way to check input/output voltages on the board? Can I replace just the board? Any other ideas would be appreciated!
Joey