Good afternoon,
I have a mtx mxa8001 that had 4 of its 8 73559p power supply fets let go. Removed all PS mosfets and checked the gate drive and was greeted with this.
That can't be a correct waveform for the power supply mosfets?
I've traced this waveform back to the output pins (8 and 11) of the TL494 which appear here.
Is the TL494 faulty?
In between there are a few buffer transistors driving this signal through a small tranformer then on to the gate resistors.
I have a mtx mxa8001 that had 4 of its 8 73559p power supply fets let go. Removed all PS mosfets and checked the gate drive and was greeted with this.
That can't be a correct waveform for the power supply mosfets?
I've traced this waveform back to the output pins (8 and 11) of the TL494 which appear here.
Is the TL494 faulty?
In between there are a few buffer transistors driving this signal through a small tranformer then on to the gate resistors.