LED DRIVER FAIL
LG TV & Audio · 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV
LED backlight driver circuit on power supply board has failed. Same symptom as strip failure (screen dark, audio present) but LED strips are functional — driver is not supplying power. Test LED driver output voltage with multimeter. LED driver typically integrated into power supply board — replacing power supply board restores function.
Error LED DRIVER FAIL on the LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV means: LED Backlight Driver Circuit Failure. The top-ranked community fix is “Replace the Power Supply Board with Integrated LED Driver” (hard difficulty, ~60 min, DIY cost: $150-$200). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · tv
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 tv repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $250-$350.
App Freezes or Crashes
Audio Out of Sync with Video
Backlight Bleeding / Clouding
LED Backlight Strip Failure — No Picture
LED Backlight Strip Physical Failure
Horizontal or Vertical Banding
Power Supply Overcurrent / Short
Main Board Failure
The LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV has 8 other known error codes:
Error code LED DRIVER FAIL also appears on 2 other LG TV & Audio models:
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