- Check incoming power—should be 120V at main input before replacing board.
- Inspect old board for burn marks, corrosion, or swollen components.
- Label all connectors if unsure—incorrect wiring can damage board.
- If surge damage is suspected, check motor, valves, and sensors for collateral failure.
- Use anti-static protection when handling new board.
- If appliance is still dead after replacement, check user interface and door/lid lock.
- Document installation for warranty and troubleshooting.
- Clear persistent errors by unplugging appliance for 5+ minutes.
- Test all cycles and options before returning to service.
- Keep spare boards in stock for high-turnover or fleet accounts.
- Update firmware if required by manufacturer for new board.
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