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- Short when powered on. Trips breaker.
- Problem resides on the motor control board. MLH0910PC Johnson.
Testing MOSFET
A simple test to determine if the MOSFET has failed is to check for open circuit between Drain and Source.
Set multi-Meter to Diode Mode
Positive Lead | Negative Lead | Expectation |
---|---|---|
Drain | Source | Open Circuit |
Motor Control Board
Pictures
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Board Layout
Schematic
Chips
Testing MOSFET
A simple test to determine if the MOSFET has failed is to check for open circuit between Drain and Source.
Set multi-Meter to Diode Mode
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Repair
We identified that the MOSFET, power diode and the large capacitors needed replacement on our motor control board.
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