Hello good night, start by reviewing feedings and kindly receive kind regards ok friend
ready friend I will make the measurements of the transformer that feeds the circuit and I will be commenting
great help friend your comment I already solved the problem effectively this error is a power failure .. I started to measure the power that exists in the heat gun and this did not reach any tension, then I started to test the cables .. Note that in the part of the switch it was burned I tried continuity in the switch of the gun and indeed it was damaged avoiding letting the voltage go to the heat gun change it and ready problem solved thank you very much friend ...