Tech Support

Technical Support – Common Problems & Solutions

1. The fixture doesn’t power on.

Possible causes:

  • The power cable is not properly connected.
  • The fuse is blown or the power switch is off.
  • The internal power supply is faulty.

Solutions:

  • Check the power input and make sure the voltage matches AC100–240V, 50/60Hz.
  • Replace the fuse with one of the same rating.
  • Test with another power cable.
  • If the fixture still doesn’t power on, contact Polarlite service — the power supply may need replacement.

2. The LED or lamp doesn’t light up.

Possible causes:

  • The light source (LED module or lamp) has failed.
  • The power supply or LED driver is damaged.
  • Internal wiring or connector is loose.

Solutions:

  • First, confirm that the fixture receives power and fans are running.
  • Check if the LED power cable connection is secure.
  • If you have technical experience, test the voltage at the LED driver output.
  • Replace the led board or driver if necessary.

3. The fixture doesn’t respond to DMX signals.

Possible causes:

  • Wrong DMX address or channel mode.
  • Bad DMX cable or connector.
  • No DMX terminator at the end of the line.

Solutions:

  • Check that the DMX address on the display matches your controller setup.
  • Try replacing the DMX cable with a new one (110Ω standard).
  • Make sure the controller output is working by testing another fixture.
  • Add a DMX terminator (120Ω) at the end of the chain.

4. The fixture turns on but no light output (shutter closed).

Possible causes:

  • The shutter/dimmer channel is closed.
  • The DMX channel mapping is incorrect.


Solutions:

  • Check the DMX value of the dimmer or shutter channel (should be 255 for full output).
  • Switch the fixture to “Auto Run” mode from the menu to test light output.

5. The fixture resets automatically or freezes.

Possible causes:

  • DMX signal interference.
  • Overheating or unstable power supply.


Solutions:

  • Check that power and DMX cables are not running together.
  • Clean cooling fans and air vents.
  • If the problem persists, reset the fixture to factory settings.

6. The pan/tilt movement is jerky or not smooth.

Possible causes:

  • The motor sensor is misaligned.
  • DMX signal lag or low refresh rate.


Solutions:

  • Perform an auto-reset from the menu.
  • Check if the head moves smoothly in “Test Mode”.
  • Ensure DMX cables are shielded and properly grounded.

7. The color wheel or gobo wheel is stuck.

Possible causes:

  • Wheel motor driver error.
  • Dust or mechanical blockage.

Solutions:

  • Run a self-test from the fixture menu.
  • Gently move the head to release tension, then restart.
  • If still not working, open the front cover and clean the wheel area carefully.

8. The fixture overheats or shuts down after a while.

Possible causes:

  • Blocked ventilation.
  • Faulty temperature sensor.


Solutions:

  • Make sure the fixture has at least 30 cm of space for air circulation.
  • Check that fans are working normally.
  • If overheating continues, stop using immediately and contact Polarfoxlite Technical Support.