Safety first: Unplug the smoker before opening the control box. If you are not comfortable working with mains wiring, seek professional help.

Diagnostic steps:

Verify outlet: Test the wall outlet with another appliance to confirm it has power.
Inspect power cord: Check for visible damage. Wiggle the cord gently at both ends while watching for any flicker (if the display briefly lights, the cord or inlet may be loose).
Check internal fuse: Open the control box and look for a small fuse on the board or inline with the power input. Test it with a multimeter and replace with the same rating if blown.
Inspect power inlet: Ensure the power inlet socket on the control box is firmly mounted and its solder joints are intact.
Replace control box: If the fuse and cord are good but there is still no power, the internal power supply on the control board has likely failed. Replace the digital control box.

Display is completely dead; smoker does not power on at all.

Possible Causes