the power button does nothing, screen is totally dead. checked the outlet and it's fine.

Diagnosis

The total loss of power and a dead display on the Aglucky HZB-12B usually indicates a failure in the electrical continuity path between the wall outlet and the main control board. Since the outlet is verified, the issue is typically a tripped internal thermal overload protector or a blown surface-mount fuse on the PCB. This occurs most frequently when the unit is operated in an environment exceeding 90°F (32°C) or if the condenser coils are clogged with dust, causing the compressor to overheat and trigger a safety shutdown. Another common culprit is a loose connection at the power inlet terminal. Because this model uses a detachable power cord, the tension pins inside the socket can lose contact over time due to vibration during the ice-dropping cycle. If the unit was recently cleaned with a damp cloth, moisture may have seeped into the control panel housing, causing a momentary short that tripped the internal protection circuit to prevent a full board burnout.

How to Fix It

Follow these steps to restore power to the unit. Be careful when working with electrical components to avoid shock.

1. Completely disconnect the power cord from the wall outlet and the back of the machine.
2. Inspect the pins of the detachable power cord for any signs of charring, bending, or oxidation. If the pins look dull or blackened, clean them with a cotton swab dipped in 90% isopropyl alcohol.
3. Locate the power inlet socket on the rear of the HZB-12B. Use a flashlight to ensure no debris or plastic shards are obstructing the socket.
4. Firmly push the power cord into the machine's socket until you hear a distinct click. A loose fit here is the primary cause of "dead" screens.
5. Plug the unit into a different outlet—specifically one not shared with a high-draw appliance like a microwave or toaster—to rule out a tripped GFCI outlet.
6. Press and hold the Power button for a full 5 seconds. If the screen flickers but doesn't stay on, the unit is likely in a "protection mode" and needs a hard reset.

If That Didn't Work

• Perform a Hard Thermal Reset: Unplug the machine and leave it disconnected for exactly 60 minutes. This allows the thermal overload protector (a bi-metallic strip) to cool down and snap back into the closed position. If the unit was running in a hot garage or tight cabinet, this is the most likely solution.
• Check for "Ice Jam" Lockout: In some rare cases, if ice has frozen solidly around the sensing pins, the board may enter a safety lockout. Use a hairdryer on a low-heat setting to gently warm the exterior of the control panel and the top of the ice basket area for 2-3 minutes, then attempt to power on.
• Inspect the Internal Fuse: If you are comfortable opening the chassis, remove the base screws and locate the main PCB. Look for the small glass or ceramic fuse. Use a multimeter to check for continuity. If the fuse reads "OL" (Open Loop), the fuse has blown and must be replaced with an identical amperage rating to restore power.
• Test with a Universal C13 Cable: The HZB-12B uses a standard power cable. Try a compatible cable from another small appliance (like a computer monitor or printer) to determine if the failure is within the cable's internal wiring rather than the machine itself.

Heads Up

• Avoid placing the unit directly against a wall; maintain at least 6 inches of clearance around the vents to prevent the thermal protector from tripping again.
• Never use a surge protector or extension cord with this unit; plug it directly into a grounded wall outlet to prevent voltage drops that can crash the control board.
• Clean the exterior vents every 30 days using a vacuum or compressed air to ensure the compressor doesn't overheat.
• If the unit is under warranty, do not open the chassis or replace the fuse yourself, as breaking the factory seal will void your replacement options.