Guardian
Logic Board Damage from Power Surge
Guardian opener does not respond after a power outage, while outlet has power.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Lightning strike or surge, Internal fuse blown, Burned components on logic board, Corrupted firmware
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before opening the opener housing. Capacitors may hold charge briefly.
- Verify outlet: Test the outlet with another device to confirm power.
- Inspect logic board: Remove the cover and look for burned traces, components, or a blown fuse (if present).
- Replace fuse: If a replaceable fuse is blown, install the same type and rating. If it blows again immediately, there is a deeper fault.
- Replace logic board or opener: If there is visible damage or no response after fuse replacement, install a new Guardian logic board or replace the opener head.
- Add surge protection: Use a surge protector on the opener circuit to prevent future damage.
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Repair Difficulty
Hard
4/5
Required Part
Guardian Logic Board
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