LASER TEMP HIGH
LG TV & Audio · HU85LA CineBeam 4K UHD Laser Smart Home Theater Projector
Laser diode assembly temperature exceeded safe limits. Projector will reduce brightness or shut down. Ultra-short-throw placed on TV stand — ensure well-ventilated, not enclosed in cabinet. Clean air filter and ventilation. Ensure intake not drawing hot air from another device. Let cool 30 minutes before restarting at reduced brightness.
Error LASER TEMP HIGH on the LG TV & Audio HU85LA CineBeam 4K UHD Laser Smart Home Theater Projector means: Laser Light Source Over-Temperature. The top-ranked community fix is “Test and Replace Internal Cooling Fan Assembly” (medium difficulty, ~60 min, DIY cost: $0). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · projector
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many projector repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $200-$350.
Color Wheel/Prism Degradation
Cooling Fan Failure
Cooling Fan Noise / Failure
Laser Light Source Failure
Lens Scratches / Contamination
DMD/Mirror Alignment Error
Internal Optical Path Contamination
Projector Overheating — Automatic Shutdown
The LG TV & Audio HU85LA CineBeam 4K UHD Laser Smart Home Theater Projector has 8 other known error codes:
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