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LG tv model troubleshooting

Choose the complete LG model family before opening a fix. Model patterns are shown on every page, and unsupported code meanings are not copied between platforms.

Exact modelObserved symptomFirst safe testVerificationStop condition

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240 complete records in this directory
G4 OLED TVOLED55/65/77/83/97G4* · 16 answersC4 OLED TVOLED42/48/55/65/77/83C4* · 16 answersB4 OLED TVOLED48/55/65/77/83B4* · 16 answersM4 wireless OLED TVOLED65/77/83/97M4* · 16 answersG3 OLED evo TVOLED55/65/77/83G3* · 16 answersC3 OLED TVOLED42/48/55/65/77/83C3* · 16 answersB3 OLED TVOLED55/65/77B3* · 16 answersQNED90T MiniLED TV65/75/86QNED90T* · 16 answersQNED85T TV55/65/75/86QNED85T* · 16 answersUR9000 UHD TV43/50/55/65/75UR9000* · 16 answersC2 OLED TVOLED42/48/55/65/77/83C2* · 16 answersCX OLED TVOLED48/55/65/77CX* · 16 answersG5 OLED evo TVOLED55/65/77/83/97G5* · 16 answersC5 OLED evo TVOLED42/48/55/65/77/83C5* · 16 answersB5 OLED TVOLED48/55/65/77/83B5* · 16 answers

Reviewed records

240 exact answers

Showing 60 representative records. Choose a platform or manufacturer above to see its complete set.

Not sure where the fault is?
LG · apps not working

LG B3 OLED TV apps will not open, update or install

LG B3 OLED TV apps will not open, update or install: one app, all apps, storage, account/region and service status produce different corrections. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · eARC

LG B3 OLED TV ARC or eARC soundbar audio is not working

LG B3 OLED TV ARC or eARC soundbar audio is not working: correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · antenna

LG B3 OLED TV cannot find antenna channels

LG B3 OLED TV cannot find antenna channels: antenna input/region, coax path, signal and a fresh channel scan should be verified. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · colors wrong

LG B3 OLED TV colors look wrong, washed out or tinted

LG B3 OLED TV colors look wrong, washed out or tinted: source format, HDMI range, picture mode, white balance and panel uniformity should be separated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · game mode

LG B3 OLED TV game mode, 120 Hz or VRR is not working

LG B3 OLED TV game mode, 120 Hz or VRR is not working: console/game support, HDMI port bandwidth, cable, input mode and format must all align. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · no sound

LG B3 OLED TV has picture but no sound

LG B3 OLED TV has picture but no sound: output selection, mute/volume, format and the external audio path should be isolated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · no picture

LG B3 OLED TV has sound but no picture

LG B3 OLED TV has sound but no picture: built-in menus versus every external input separates panel/backlight faults from HDMI/source problems. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · restarting

LG B3 OLED TV keeps restarting or will not stay on

LG B3 OLED TV keeps restarting or will not stay on: outlet, external devices, sleep/timer/CEC and internal power protection should be isolated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · too dark

LG B3 OLED TV picture is too dark or keeps dimming

LG B3 OLED TV picture is too dark or keeps dimming: ambient/power saving, HDR mode, content mastering and panel behavior should be separated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · remote not working

LG B3 OLED TV remote will not control the TV

LG B3 OLED TV remote will not control the TV: infrared power/volume and Bluetooth/RF navigation may be separate paths. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · flicker

LG B3 OLED TV screen flickers, flashes or goes black intermittently

LG B3 OLED TV screen flickers, flashes or goes black intermittently: trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · HDMI no signal

LG B3 OLED TV shows no signal on HDMI

LG B3 OLED TV shows no signal on HDMI: input selection, source output, cable, port and handshake should be tested in a direct minimal chain. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · firmware

LG B3 OLED TV software update will not install

LG B3 OLED TV software update will not install: exact model/region, free storage, network and stable power are required. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · AirPlay

LG B3 OLED TV will not AirPlay, Cast or screen mirror

LG B3 OLED TV will not AirPlay, Cast or screen mirror: protocol support, same-network discovery, guest isolation and protected-content restrictions should be separated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · Wi-Fi

LG B3 OLED TV will not connect to Wi-Fi or keeps disconnecting

LG B3 OLED TV will not connect to Wi-Fi or keeps disconnecting: tV radio versus router band/security/signal and provider service should be separated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · Bluetooth

LG B3 OLED TV will not pair with Bluetooth headphones or speakers

LG B3 OLED TV will not pair with Bluetooth headphones or speakers: tV eligibility, competing hosts, pairing mode, distance and audio-output support should be isolated. Scoped to OLED55/65/77B3*, with the model boundary and safe stop points made explicit.

Open record LG · apps not working

LG B4 OLED TV apps will not open, update or install

LG B4 OLED TV apps will not open, update or install: one app, all apps, storage, account/region and service status produce different corrections. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · eARC

LG B4 OLED TV ARC or eARC soundbar audio is not working

LG B4 OLED TV ARC or eARC soundbar audio is not working: correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · antenna

LG B4 OLED TV cannot find antenna channels

LG B4 OLED TV cannot find antenna channels: antenna input/region, coax path, signal and a fresh channel scan should be verified. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · colors wrong

LG B4 OLED TV colors look wrong, washed out or tinted

LG B4 OLED TV colors look wrong, washed out or tinted: source format, HDMI range, picture mode, white balance and panel uniformity should be separated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · game mode

LG B4 OLED TV game mode, 120 Hz or VRR is not working

LG B4 OLED TV game mode, 120 Hz or VRR is not working: console/game support, HDMI port bandwidth, cable, input mode and format must all align. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · no sound

LG B4 OLED TV has picture but no sound

LG B4 OLED TV has picture but no sound: output selection, mute/volume, format and the external audio path should be isolated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · no picture

LG B4 OLED TV has sound but no picture

LG B4 OLED TV has sound but no picture: built-in menus versus every external input separates panel/backlight faults from HDMI/source problems. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · restarting

LG B4 OLED TV keeps restarting or will not stay on

LG B4 OLED TV keeps restarting or will not stay on: outlet, external devices, sleep/timer/CEC and internal power protection should be isolated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · too dark

LG B4 OLED TV picture is too dark or keeps dimming

LG B4 OLED TV picture is too dark or keeps dimming: ambient/power saving, HDR mode, content mastering and panel behavior should be separated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · remote not working

LG B4 OLED TV remote will not control the TV

LG B4 OLED TV remote will not control the TV: infrared power/volume and Bluetooth/RF navigation may be separate paths. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · flicker

LG B4 OLED TV screen flickers, flashes or goes black intermittently

LG B4 OLED TV screen flickers, flashes or goes black intermittently: trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · HDMI no signal

LG B4 OLED TV shows no signal on HDMI

LG B4 OLED TV shows no signal on HDMI: input selection, source output, cable, port and handshake should be tested in a direct minimal chain. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · firmware

LG B4 OLED TV software update will not install

LG B4 OLED TV software update will not install: exact model/region, free storage, network and stable power are required. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · AirPlay

LG B4 OLED TV will not AirPlay, Cast or screen mirror

LG B4 OLED TV will not AirPlay, Cast or screen mirror: protocol support, same-network discovery, guest isolation and protected-content restrictions should be separated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · Wi-Fi

LG B4 OLED TV will not connect to Wi-Fi or keeps disconnecting

LG B4 OLED TV will not connect to Wi-Fi or keeps disconnecting: tV radio versus router band/security/signal and provider service should be separated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · Bluetooth

LG B4 OLED TV will not pair with Bluetooth headphones or speakers

LG B4 OLED TV will not pair with Bluetooth headphones or speakers: tV eligibility, competing hosts, pairing mode, distance and audio-output support should be isolated. Scoped to OLED48/55/65/77/83B4*, with the model boundary and safe stop points made explicit.

Open record LG · apps not working

LG B5 OLED TV apps will not open, update or install

LG B5 OLED TV apps will not open, update or install: one app, all apps, storage, account/region and service status produce different corrections. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · eARC

LG B5 OLED TV ARC or eARC soundbar audio is not working

LG B5 OLED TV ARC or eARC soundbar audio is not working: correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · antenna

LG B5 OLED TV cannot find antenna channels

LG B5 OLED TV cannot find antenna channels: antenna input/region, coax path, signal and a fresh channel scan should be verified. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · colors wrong

LG B5 OLED TV colors look wrong, washed out or tinted

LG B5 OLED TV colors look wrong, washed out or tinted: source format, HDMI range, picture mode, white balance and panel uniformity should be separated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · game mode

LG B5 OLED TV game mode, 120 Hz or VRR is not working

LG B5 OLED TV game mode, 120 Hz or VRR is not working: console/game support, HDMI port bandwidth, cable, input mode and format must all align. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · no sound

LG B5 OLED TV has picture but no sound

LG B5 OLED TV has picture but no sound: output selection, mute/volume, format and the external audio path should be isolated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · no picture

LG B5 OLED TV has sound but no picture

LG B5 OLED TV has sound but no picture: built-in menus versus every external input separates panel/backlight faults from HDMI/source problems. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · restarting

LG B5 OLED TV keeps restarting or will not stay on

LG B5 OLED TV keeps restarting or will not stay on: outlet, external devices, sleep/timer/CEC and internal power protection should be isolated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · too dark

LG B5 OLED TV picture is too dark or keeps dimming

LG B5 OLED TV picture is too dark or keeps dimming: ambient/power saving, HDR mode, content mastering and panel behavior should be separated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · remote not working

LG B5 OLED TV remote will not control the TV

LG B5 OLED TV remote will not control the TV: infrared power/volume and Bluetooth/RF navigation may be separate paths. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · flicker

LG B5 OLED TV screen flickers, flashes or goes black intermittently

LG B5 OLED TV screen flickers, flashes or goes black intermittently: trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · HDMI no signal

LG B5 OLED TV shows no signal on HDMI

LG B5 OLED TV shows no signal on HDMI: input selection, source output, cable, port and handshake should be tested in a direct minimal chain. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · firmware

LG B5 OLED TV software update will not install

LG B5 OLED TV software update will not install: exact model/region, free storage, network and stable power are required. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · AirPlay

LG B5 OLED TV will not AirPlay, Cast or screen mirror

LG B5 OLED TV will not AirPlay, Cast or screen mirror: protocol support, same-network discovery, guest isolation and protected-content restrictions should be separated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · Wi-Fi

LG B5 OLED TV will not connect to Wi-Fi or keeps disconnecting

LG B5 OLED TV will not connect to Wi-Fi or keeps disconnecting: tV radio versus router band/security/signal and provider service should be separated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · Bluetooth

LG B5 OLED TV will not pair with Bluetooth headphones or speakers

LG B5 OLED TV will not pair with Bluetooth headphones or speakers: tV eligibility, competing hosts, pairing mode, distance and audio-output support should be isolated. Scoped to OLED48/55/65/77/83B5*, with the model boundary and safe stop points made explicit.

Open record LG · apps not working

LG C2 OLED TV apps will not open, update or install

LG C2 OLED TV apps will not open, update or install: one app, all apps, storage, account/region and service status produce different corrections. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · eARC

LG C2 OLED TV ARC or eARC soundbar audio is not working

LG C2 OLED TV ARC or eARC soundbar audio is not working: correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · antenna

LG C2 OLED TV cannot find antenna channels

LG C2 OLED TV cannot find antenna channels: antenna input/region, coax path, signal and a fresh channel scan should be verified. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · colors wrong

LG C2 OLED TV colors look wrong, washed out or tinted

LG C2 OLED TV colors look wrong, washed out or tinted: source format, HDMI range, picture mode, white balance and panel uniformity should be separated. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · game mode

LG C2 OLED TV game mode, 120 Hz or VRR is not working

LG C2 OLED TV game mode, 120 Hz or VRR is not working: console/game support, HDMI port bandwidth, cable, input mode and format must all align. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · no sound

LG C2 OLED TV has picture but no sound

LG C2 OLED TV has picture but no sound: output selection, mute/volume, format and the external audio path should be isolated. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · no picture

LG C2 OLED TV has sound but no picture

LG C2 OLED TV has sound but no picture: built-in menus versus every external input separates panel/backlight faults from HDMI/source problems. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · restarting

LG C2 OLED TV keeps restarting or will not stay on

LG C2 OLED TV keeps restarting or will not stay on: outlet, external devices, sleep/timer/CEC and internal power protection should be isolated. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · too dark

LG C2 OLED TV picture is too dark or keeps dimming

LG C2 OLED TV picture is too dark or keeps dimming: ambient/power saving, HDR mode, content mastering and panel behavior should be separated. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · remote not working

LG C2 OLED TV remote will not control the TV

LG C2 OLED TV remote will not control the TV: infrared power/volume and Bluetooth/RF navigation may be separate paths. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · flicker

LG C2 OLED TV screen flickers, flashes or goes black intermittently

LG C2 OLED TV screen flickers, flashes or goes black intermittently: trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record LG · HDMI no signal

LG C2 OLED TV shows no signal on HDMI

LG C2 OLED TV shows no signal on HDMI: input selection, source output, cable, port and handshake should be tested in a direct minimal chain. Scoped to OLED42/48/55/65/77/83C2*, with the model boundary and safe stop points made explicit.

Open record

Product lines

How the 15 LG families here actually differ

These are not marketing tiers. Each group below behaves differently under diagnosis, which is why a procedure written for one does not transfer to another, and it is the first thing to settle before following any fix.

LG TV; OLED/QNED/LCD panel, webOS year, HDMI bandwidth and Magic Remote vary by model.

Zero Connect box carries external video; isolate box/link versus panel/webOS.

2025 LG TV; OLED/QNED panel, webOS release, HDMI bandwidth and Magic Remote vary by model and size.

Find your model

Model numbers covered, and where each one's answers are

Match the identifier on your appliance or device label to a row below. LG answers here are scoped to these patterns, and a model outside them is deliberately not claimed rather than covered by a page that guesses.

FamilyModel numbersPublished specs
G4 OLED TVOLED55/65/77/83/97G4*3 researched
C4 OLED TVOLED42/48/55/65/77/83C4*3 researched
B4 OLED TVOLED48/55/65/77/83B4*3 researched
G3 OLED evo TVOLED55/65/77/83G3*3 researched
C3 OLED TVOLED42/48/55/65/77/83C3*3 researched
B3 OLED TVOLED55/65/77B3*3 researched
QNED90T MiniLED TV65/75/86QNED90T*3 researched
QNED85T TV55/65/75/86QNED85T*3 researched
UR9000 UHD TV43/50/55/65/75UR9000*3 researched
C2 OLED TVOLED42/48/55/65/77/83C2*3 researched
CX OLED TVOLED48/55/65/77CX*3 researched
M4 wireless OLED TVOLED65/77/83/97M4*4 researched
G5 OLED evo TVOLED55/65/77/83/97G5*4 researched
C5 OLED evo TVOLED42/48/55/65/77/83C5*4 researched
B5 OLED TVOLED48/55/65/77/83B5*3 researched

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.

See the publication gate