Hisense
Intermittent Power Loss
Unit shuts off randomly during cooking and restarts or stays off.
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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
Loose power cord connection, Overheating main PCB, Failing thermal fuse making intermittent contact, Cracked solder joints on power input
How to Fix / Troubleshooting
Safety first: Unplug the unit before inspection. Random shutoffs can indicate overheating or electrical issues.
- Check cord and outlet: Ensure the plug fits snugly in the outlet and the cord is not being pulled or twisted during use.
- Inspect vents: Make sure ventilation openings are not blocked, which can cause internal overheating and shutdown.
- Open and inspect PCB: Look for signs of heat damage on the main PCB, especially around power components. Gently flex the board (with power off) to see if any components move due to cracked solder joints.
- Check thermal fuse and thermostat: If accessible, test for solid continuity. Replace if intermittent or heat-damaged.
- Replace PCB if needed: If you find cracked solder joints or overheated components, replace the main control PCB.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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