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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
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Open Circuit
Motor Control Board
Pictures
Board Layout
Schematic
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| Part | Specification | Original Part# | Replacement Part# | Image |
|---|---|---|---|---|
| MOSFET | Power Mosfet | IRFP260N | IRFP260N |
|
| 2x Capacitors | Aluminum Electrolytic Capacitors - Snap In 680uF 200 Volts 20% | LSG681M2D-2540 | LGR2D681MELA40 |
|
| Power Diode | 30A, 600V Ultra Fast Diode | F30U60ST | RURP3060 |
|
| TO-220 Insulation Kit | Insulation Kit required because the new diode does not have an insulated packaging. | - | TO-220 Insulation Kit | |
Completed Work
TODO
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Useful Information
Testing a 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 |
Testing the Treadmill Motor
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