I received a non-working electric fireplace. The model is DBL2000-MS2 made by Ningbo Jiaqing. There is no power going through and I can't find a schemaic online anywhere for this unit or any information. On the unit chipboard there is a place right  where the ac cord plugs on and  there is a spot for a component marked 471. The component itself has been removed and I have no idea what belongs in this empty space. Does anyone have a suggestion or know anything about these things?? What belongs here or where I can find a schematic??