LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV ERROR 105 Error Fix: DNS Resolution Failed

Error code ERROR 105 on the LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV means: DNS Resolution Failed. The TV cannot resolve domain names. DNS server is unreachable or not responding. Check router DNS settings. Try changing DNS to Google (8.8.8.8) or Cloudflare (1.1.1.1) in the TV network settings: Settings → Network → Wi-Fi Connection → Edit → manually enter DNS. Power cycle the router and TV.

The most successful fix is "Replace TV Network Module" (hard difficulty, ~60 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace TV Network Module") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Plastic opening tool, Multimeter.

DIY cost: $15-$25. Professional repair typically costs $150-$220. Many homeowners save money by trying the top-ranked community fix first.

The LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV has 8 other known error codes, including: APP CRASH (App Freezes or Crashes), AUDIO SYNC (Audio Out of Sync with Video), BACKLIGHT BLEED (Backlight Bleeding / Clouding), BACKLIGHT FAILURE (LED Backlight Strip Failure — No Picture), BACKLIGHT STRIP FAIL (LED Backlight Strip Physical Failure), and 3 more.

Error code ERROR 105 also appears on 6 other LG TV & Audio models: 75NANO75UQA 75" Class NanoCell 75 Series 4K Smart TV, 86QNED80URA 86" Class QNED80 4K QNED MiniLED Smart TV, OLED55B3PUA 55" Class B3 4K OLED Smart TV, OLED65C3PUA 65" Class C3 4K OLED evo Smart TV, OLED65C4PUA 65" Class C4 4K OLED evo Smart TV, OLED65G3PUA 65" Class G3 4K OLED evo Gallery Edition Smart TV. The fix may vary by model, so check each model's specific page for tailored repair steps.