NZXT KRAKEN Z73 Lcd Screen Black

NZXT Internal USB Hub Gen 3

The LCD controller on the Z73 requires a stable 5V rail and consistent data packet delivery which many motherboard USB 2.0 headers fail to provide under load. This powered hub acts as a signal repeater and voltage regulator, isolating the LCD hardware from motherboard power fluctuations that cause the screen to remain in a powered-down or uninitialized state.

SKU: AC-IUSBH-M3

NZXT Kraken Z-Series Breakout Cable

This proprietary 14-pin cable routes both SATA power and USB data to the pump head; mechanical fatigue or pin-tension loss at the pump-side connector can break the circuit for the LCD while the pump motor (on a separate lead) continues to function. Replacing the cable restores electrical continuity for the secondary logic board responsible for the display.

Z73 Pump and LCD Assembly

If the screen remains black despite stable power and data signals, the failure is localized to the internal inverter or the liquid crystal driver IC on the pump's integrated PCB. Because these internal components are surface-mounted and potted for moisture resistance, the entire pump head assembly must be replaced.