Hey there I have an old MR FX Yoda Light saber. The last time I took it out of the box however it was acting very sporadic. I could turn it on but then it would jitter and constantly try to re-start. sometimes it would start fine but then you try an action sound and it would re-start plus the Audio was Crackly and the Blade after a while would not light brightly but Very dim. I tried new Batteries at first but no Joy. I was thinking I might be able to get the guts of one of the new Toy sabers and switch it out. If any one has any tips for me or other suggestions I would Greatly appreciate it.