Exact model-family answer directory

LG C5 OLED evo TV troubleshooting

Choose the symptom actually shown by OLED42/48/55/65/77/83C5*. 2025 LG TV; OLED/QNED panel, webOS release, HDMI bandwidth and Magic Remote vary by model and size. Error codes remain separate records because the same characters can mean different things on another platform.

no pictureno soundHDMI no signalWi-Fiapps not workingremote not working

Reviewed records

16 exact answers

Not sure where the fault is?

LG · apps not working

LG C5 OLED evo TV apps will not open, update or install

For the LG C5 OLED evo TV, one app, all apps, storage, account/region and service status produce different corrections.

Open record LG · eARC

LG C5 OLED evo TV ARC or eARC soundbar audio is not working

For the LG C5 OLED evo TV, correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter.

Open record LG · antenna

LG C5 OLED evo TV cannot find antenna channels

For the LG C5 OLED evo TV, antenna input/region, coax path, signal and a fresh channel scan should be verified.

Open record LG · colors wrong

LG C5 OLED evo TV colors look wrong, washed out or tinted

For the LG C5 OLED evo TV, source format, HDMI range, picture mode, white balance and panel uniformity should be separated.

Open record LG · game mode

LG C5 OLED evo TV game mode, 120 Hz or VRR is not working

For the LG C5 OLED evo TV, console/game support, HDMI port bandwidth, cable, input mode and format must all align.

Open record LG · no sound

LG C5 OLED evo TV has picture but no sound

For the LG C5 OLED evo TV, output selection, mute/volume, format and the external audio path should be isolated.

Open record LG · no picture

LG C5 OLED evo TV has sound but no picture

For the LG C5 OLED evo TV, built-in menus versus every external input separates panel/backlight faults from HDMI/source problems.

Open record LG · restarting

LG C5 OLED evo TV keeps restarting or will not stay on

For the LG C5 OLED evo TV, outlet, external devices, sleep/timer/CEC and internal power protection should be isolated.

Open record LG · too dark

LG C5 OLED evo TV picture is too dark or keeps dimming

For the LG C5 OLED evo TV, ambient/power saving, HDR mode, content mastering and panel behavior should be separated.

Open record LG · remote not working

LG C5 OLED evo TV remote will not control the TV

For the LG C5 OLED evo TV, infrared power/volume and Bluetooth/RF navigation may be separate paths.

Open record LG · flicker

LG C5 OLED evo TV screen flickers, flashes or goes black intermittently

For the LG C5 OLED evo TV, trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault.

Open record LG · HDMI no signal

LG C5 OLED evo TV shows no signal on HDMI

For the LG C5 OLED evo TV, input selection, source output, cable, port and handshake should be tested in a direct minimal chain.

Open record LG · firmware

LG C5 OLED evo TV software update will not install

For the LG C5 OLED evo TV, exact model/region, free storage, network and stable power are required.

Open record LG · AirPlay

LG C5 OLED evo TV will not AirPlay, Cast or screen mirror

For the LG C5 OLED evo TV, protocol support, same-network discovery, guest isolation and protected-content restrictions should be separated.

Open record LG · Wi-Fi

LG C5 OLED evo TV will not connect to Wi-Fi or keeps disconnecting

For the LG C5 OLED evo TV, tV radio versus router band/security/signal and provider service should be separated.

Open record LG · Bluetooth

LG C5 OLED evo TV will not pair with Bluetooth headphones or speakers

For the LG C5 OLED evo TV, tV eligibility, competing hosts, pairing mode, distance and audio-output support should be isolated.

Open record

Confirm the model first

Which units this covers, and how to tell yours is one of them

Every answer below is scoped to these model identifiers. A neighbouring model in the same line can use a different part, a different reset sequence or a different radio, so matching the identifier before following a procedure is the step that decides whether the rest of the page applies to you.

Model numbers and patterns: OLED42/48/55/65/77/83C5*
What that covers: 2025 LG TV; OLED/QNED panel, webOS release, HDMI bandwidth and Magic Remote vary by model and size.

Published specification

What is true of this model and changes how you fix it

These are the properties that decide which procedure applies. Each is read from the manufacturer’s own published figures for this model, not carried over from a sibling that shares its retail name.

Panel: OLED evo (conventional WOLED, not the G5's Tandem panel) with Brightness Booster Max and the Alpha 9 AI Processor Gen8, peaking over 1,000 nits. Self-emissive, so there is no backlight bloom; a large bright window dimming slightly is the Auto Brightness Limiter working as designed, not a defect.
Smart platform: webOS 25 with the Magic Remote. Updates: Settings › Support › Software Update; screen share is AirPlay 2 and Miracast. Tizen / Google TV / Roku TV steps do not apply.
Gaming / HDMI: Four HDMI 2.1 (48 Gbps) ports up to 144 Hz with VRR, ALLM, G-Sync and FreeSync Premium. The high-refresh and VRR modes require Game Optimizer on for that input and a 48 Gbps cable; without those the input stays at 60 Hz.
eARC: eARC is on HDMI 2. Route a soundbar or AV receiver there and enable SIMPLINK (HDMI-CEC) on both ends before treating an ARC/Atmos dropout as a hardware fault.

Where these figures were read. lg.com OLED65C5PUA product page (Alpha 9 Gen8, 144Hz, webOS 25) + FlatpanelsHD 2025 lineup, read 2026-09-01

Manufacturer support for this product line. LG Support — TV and home theater support. Official LG television manuals, webOS support, diagnostics and repair entry point.

Exact questions

Questions that only have an answer for the LG C5 OLED evo TV

Each answer below uses this model’s own published figures. The same question asked about a different model in the line has a different answer, which is why it is answered here rather than on a general page.

My LG C5 screen looks dimmer than expected in bright scenes.+

A large bright area dimming is the Auto Brightness Limiter, standard on all OLEDs including the C5. It is not a fault. Turn off Energy Saving (Settings › Support › Energy Saving) and the ambient light sensor to stop the other automatic dimming; the ABL on full-screen brightness is intentional and cannot be switched off.

Which HDMI port should I use for my PS5 or Xbox Series X on the C5?+

Any of the four — all four are full HDMI 2.1 at 48 Gbps, unlike LG's B-series where only some ports are full-bandwidth. Use a certified Ultra High Speed cable and turn on Game Optimizer for that input to get 4K 120/144 Hz and VRR. HDMI 2 also carries eARC if you are chaining audio through the TV.

Structured depth, not empty permutations

Every published record carries a direct answer, scope, ordered fixes, risk notes and sources.

Device and manufacturer hubs share a consistent record system, but each answer carries the relevant controls, fault boundaries, consequences and official support entry point for that platform.

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