1. HydroShift II LCD-S Screen Is Black
  1. CoIn some systems, motherboard backplate bending may lower the CPU slightly, preventing the LCD pogo pins from making proper contact.
  2. Contact support to request an LCD replacement.
2. HydroShift II LCD-S Works but USB Disconnects or Screen Advance Mode Fails
  1. Please contact support for a full AIO + LCD replacement.
3. HydroShift II LCD-S Overheating or Pump/Fan Irregularities
  1. Symptoms may include unstable pump speed, 0 RPM readings, uneven fan speeds, or stopped fans.

  2. Update the AIO receiver firmware via Local Update:

    1. Download the firmware file.

    2. Open L-Connect 3 → Settings → Firmware → Local Update and complete the installation.

  3. This update is required for HydroShift II LCD-S TL / CL / Fanless models.