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Here is a partial schematic created by tracing the board. It is far from complete but could be helpful in the future.
Chips
| Part | Marking | Packaging | Manufacturer | Description | URL | Datasheet |
|---|---|---|---|---|---|---|
F30U60ST | TO-220F-2 | Fairchild Semiconductor | Power Diode 30Amperes,600Volts Single Insulated Package Ultra Fast Recovery Epitaxial Diode |
https://www.findchips.com/detail/f30u60/229119968-Taiwan%20Semiconductor?quantity=1
https://www.veswin.com/product-F30U60ST.html
Alternative:
Alternatives: |
OR
https://www.onsemi.com/pdf/datasheet/ffpf30ua60s-d.pdf
OR
https://www.mouser.ca/ProductDetail/onsemi/RURP3060?qs=sGAEpiMZZMueQxo7L%2FBPyF09REKHpFFZ
RURP3060 with |
| A132 | A132 | 10 mm between leads | Lelon | Capacitor 680uF, 200v |
Alternative: |
| IRFP260N | MOSFET |
| IRFP260N |
https://www.mouser.com/catalog/specsheets/international%20rectifier_irfp260n.pdf
| Other Chips - Not Replaced | ||||||
|---|---|---|---|---|---|---|
| MP3508N | MP3508N | SunB | Bridge Rectifier | |||
| MP3508 | ||||
| JQX-105F-1 | JQX-105F-1 | Relay Coil: 12 VDC 30A 240VAC |
| JQX-105F-1 |
| SDT-S-112 | Relay 12v 10A 250VAC, 30VDC |
| datasheet | ||||
| RS207 | SunB | Bridge Rectifier 2A |
| datasheet | ||||
| 5L0380R | Fairchild | Power Switch(FPS) |
| 5L0380R |
LM 339 ST ez82718 | LM 339 | STMicroelectronics | Low-power quad voltage comparators LOC: U3/U4 |
| LM339 | lm339.pdf | |||
| A817 123 | A817 123 | Optocoupler, Phototransistor Output, High Reliability, 5300 VRMS |
| SFH615AA |
| datasheet |
| 6N136 1049T1 | High Speed Optocoupler, 1 MBd, Photodiode with Transistor Output |
| 6N136-X009T | ||||
MMBT3904LT1 | 1AM | SOT-23 | Fairchild | NPN Transistor |
|
| datasheet |
| MMBT3906 | 2A | SOT-23 | Fairchild | PNP Transistor |
|
Repair
We identified that the MOSFET (Q3), power diode (D5) and the large capacitors needed replacement on our motor control board. We also had to replace a resistor (R11) which was mark as being 33 ohms but tested at 10K on the board. Ended up replacing this with a 47 ohm through hole resistor.
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