Panasonic TZS9EK097 plasma TV dead set repair kit for TX-P42X50B, TX-P42X50E, TX-P42XT50B, TX-P42XT50E, TX-P50X50B, TX-P50X50E, TX-P50XT50B, TX-P50XT50E.
Worked a treat! The TV is now functioning as it should and I don't have to wait for 3 days for it to return after a loss of power. Be aware though that you must have the facilities to remove the old surface mount chip and solder the new one into place.