Well, cleaned up all the battery terminals as the tank was stored for a long time with batteries still in it(BIG NO NO) and reset the crystals an she works just fine. No sound though. Did these first version Vs tanks have sound? I took off a little plastic cover on the bottom of the tank because I thought there may have been a switch under it and the tank says Tokyo  Muari so i'm guessing this is the first version. Nasty little airsoft gun in this puppy. Now I need to go and buy a Vs AS T-72. Atleast I'll finally have some modern armor to actually do some type of battling with Hooraah.