Fisher & Paykel Gw501 smartdrive

I hope somebody may be able to hep me. I have a f & P gw501 which started to behave strangely on weekend. It fills intermittenly(only wash in cold water) and the bowl doenst rotate slowly like normal. it is stopped. then the water stops flowing in and the beep starts like its the end of the cycle. you can advance to the spin light and the pump will pump out any water but the bowl wont spin up at all. some time ago we had small amounts of water under machine but couldn”t find from where and then its been fine since. the pump also every now and then seems to make avery loud squeal like a belt slipping. could it be the main control box (Blue one) or is it possibly the motor under the drum? maybe effected by a leak sometime ago. I would be grateful if somebody could steer me inthe right direction. Dont really want to purchase a new washer.