So im trying to repair a gas competition 7000.1d.
so the power supply mosfets and output mosfets where blown, aswell as all gate resistor on power supply fets.
ive replaced all gate resistors and removed the rectifiers.
when testing with fets it just shorts the waveform on the gate and maxes the current limiter i have of 5 amps to the amp.
waveform on ps gate exist without fets but are not the same amplitude, what could be the cause? ive tried to replace the tl494 but no luck. vcc is at 12v. ive checked all 4 step up npn transistor and checks out fine with multimeter.
no green light nor protect diode lights up.
so the power supply mosfets and output mosfets where blown, aswell as all gate resistor on power supply fets.
ive replaced all gate resistors and removed the rectifiers.
when testing with fets it just shorts the waveform on the gate and maxes the current limiter i have of 5 amps to the amp.
waveform on ps gate exist without fets but are not the same amplitude, what could be the cause? ive tried to replace the tl494 but no luck. vcc is at 12v. ive checked all 4 step up npn transistor and checks out fine with multimeter.
no green light nor protect diode lights up.