I just bought a Whirlpool Estate TAWS850PQ used. I am told that it is 3 years old. After hooking it up everything appeared normal. I turned it on without putting clothes in it. It filled, agitated, and drained fine. Once it got up to speed in the spin cycle though, it was as if a small person was banging on the front of it to get out. Bang Bang Bang really loud. It continued until I lifted the lid and the cycle stopped. Any suggestions as to what is wrong? Thanks.

Washing Machines - Estate - TAWS850PQ