Hi guys, I'm new on the site and have a quick question. I've just received an FX Darth Vader LS (second hand but previously working) and although I've replaced new batteries 3 times (!) the sabre wont light up. There is a buzzing sound on turning on but nothing else? It has 2-3 times fired up and lit up and now nothing. Any basics to check? i'm wondering if it got damaged in transit. Cheers, Pat.