Hi all, just installed a Top up tv box at my parents,Thomson type, new high gain ariel and a new screened cable from set top box to ariel. My problem is when the washing machine is operated the tv signal deteriorates. i.e. when the solenoid valves operate to allow water into the machine the picture goes blocky and on the spin cycle the picture just disappears. Tv and box in a different room, arial in same room approx 8 feet away from and above machine. Any ideas , can only think it must be the new arial.