That's a weird failure for a polyester film cap at relatively low voltage. As you say, MOSFETs normally fail short, so good catch! For the drivers to fail is odd though as they are normally killed by a shorted MOSFET, although they are extremely sensitive to a difference in the voltage between the input and drive side ground voltages.
That's a weird failure for a polyester film cap at relatively low voltage.
As you say, MOSFETs normally fail short, so good catch! For the drivers to fail is odd though as they are normally killed by a shorted MOSFET, although they are extremely sensitive to a difference in the voltage between the input and drive side ground voltages.