Hello Z , checking the crystals - on the front panel of the transmitter ( lower right ) there is a black oblong piece of plastic , above it you can see the letters A B C . That is the cover for the Tx's crystal . Just pull it out ( it might be stiff ) put it in your other 'good' TX , and see if the tank works now .
. . . .re Pershing - " flashing lights , no response . . ."
. . . sounds like a classic case of low battery
