Hi SUEC,
Hope by now you my have already solved your problem,but thought I might add a simular sittuation that happened to me and what turned out to be the problem.My last two tanks I bought a tiger and a panther hl S&S models.The panther worked fine,but the Tiger was the problem.(the guy I bought it from was the one who helped me find the problem in a round about way)The lights would flash on the tank,but it would not start.I e-mail the seller and he replied back asking me to check the (crystals)to make sure they were the same chanel(they were)checked to make sure one was for Tx and Rx and matching frequency and everything was ok that way.So I took out the crystals from another tank and radio,put them into the transmitter and tank that did not work. Problem solved,tank worked perfect,Just a defective crystal. Hope this might be help to you and others. BIGMIG