well i've open up my tank again and try it runnng, everything works, the cannon eleveting, bb gun firring, foward, reverse, smoke unit and sound all orks, except the turret movment. it does not turn left and right, i check the board but all sems ok, no cut of wire and the resistor that i have mention, it's still working when i test it with multi testor.....any body knows or expirience the problem i had? real need our help...bad luck hae been following me....