Marantec
No AC Power or Blown Internal Fuse
Opener clicks but nothing happens; no motor sound, no movement, display may be blank.
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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
Tripped circuit breaker or GFCI, Loose power cord connection, Blown internal fuse on Marantec head, Failed internal power supply
How to Fix / Troubleshooting
Safety first: Unplug the opener before opening the housing. Only replace fuses with identical ratings.
- Check outlet: Plug a lamp or tester into the same outlet to confirm power. Reset any tripped breaker or GFCI.
- Inspect power cord: Ensure the opener’s cord is fully inserted and not damaged.
- Check internal fuse: Remove the opener cover and locate the small fuse on the control board. If blown, replace with the same type and rating. If it blows again immediately, there is a deeper electrical fault.
- If no visible fuse or repeated failure: The internal power supply or board is likely defective and the control board/head must be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Marantec Control Board (with Fuse/Power Supply)
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