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6. Circuit and checking
6.1 Circuit diagram
6.2 Mainboard
6.2.1 Checking method
If the problem is probably caused by the mainboard, change it directly to confirm.
6.2.2 Removing the mainboard
1. Unplug the appliance
2. Remove the screws by screwdriver and remove the electric box cover, as picture 1.
3. Remove the screw, then remove the mainboard, as picture 2.
Hisense Refrigerator