POWER CYCLE
LG TV & Audio · 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV
TV spontaneously powers off and reboots, or enters boot loop. Can be caused by overheating (check ventilation), firmware bug (update via USB), power supply instability (check outlet), failed capacitor on power board, or main board failure. If it occurs during specific apps, clear app data. If across all inputs, suspect hardware.
Error POWER CYCLE on the LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV means: TV Turns Off and Restarts. The top-ranked community fix is “Test and Replace Faulty Capacitors on Power Board” (hard difficulty, ~90 min, DIY cost: $20-$50). 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: $150-$250.
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
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 POWER CYCLE also appears on 6 other LG TV & Audio models:
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