suggestions. 1.- to check the source have the focus test. you remove the flyback, the hot and check how much voltage you have. To check if you have an oscillation, place your frequency meter in the hot plate and check the frequency 15750 cycles. 3.- If you do not have a frequency meter, I send you a diagram of a vpp probe, this is placed in the driver's collector and check if you have vpp. comment. greetings felipe ascencio sondavpp.png [9.57kb]