Exact model-family answer directory

Samsung QN90B Neo QLED TV troubleshooting

Choose the symptom actually shown by QN43/50/55/65/75/85QN90B*. Samsung TV; panel type, One Connect box, HDMI 2.1 ports, Tizen year and remote vary by model. 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?

Samsung · apps not working

Samsung QN90B Neo QLED TV apps will not open, update or install

For the Samsung QN90B Neo QLED TV, one app, all apps, storage, account/region and service status produce different corrections.

Open record Samsung · eARC

Samsung QN90B Neo QLED TV ARC or eARC soundbar audio is not working

For the Samsung QN90B Neo QLED TV, correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter.

Open record Samsung · antenna

Samsung QN90B Neo QLED TV cannot find antenna channels

For the Samsung QN90B Neo QLED TV, antenna input/region, coax path, signal and a fresh channel scan should be verified.

Open record Samsung · colors wrong

Samsung QN90B Neo QLED TV colors look wrong, washed out or tinted

For the Samsung QN90B Neo QLED TV, source format, HDMI range, picture mode, white balance and panel uniformity should be separated.

Open record Samsung · game mode

Samsung QN90B Neo QLED TV game mode, 120 Hz or VRR is not working

For the Samsung QN90B Neo QLED TV, console/game support, HDMI port bandwidth, cable, input mode and format must all align.

Open record Samsung · no sound

Samsung QN90B Neo QLED TV has picture but no sound

For the Samsung QN90B Neo QLED TV, output selection, mute/volume, format and the external audio path should be isolated.

Open record Samsung · no picture

Samsung QN90B Neo QLED TV has sound but no picture

For the Samsung QN90B Neo QLED TV, built-in menus versus every external input separates panel/backlight faults from HDMI/source problems.

Open record Samsung · restarting

Samsung QN90B Neo QLED TV keeps restarting or will not stay on

For the Samsung QN90B Neo QLED TV, outlet, external devices, sleep/timer/CEC and internal power protection should be isolated.

Open record Samsung · too dark

Samsung QN90B Neo QLED TV picture is too dark or keeps dimming

For the Samsung QN90B Neo QLED TV, ambient/power saving, HDR mode, content mastering and panel behavior should be separated.

Open record Samsung · remote not working

Samsung QN90B Neo QLED TV remote will not control the TV

For the Samsung QN90B Neo QLED TV, infrared power/volume and Bluetooth/RF navigation may be separate paths.

Open record Samsung · flicker

Samsung QN90B Neo QLED TV screen flickers, flashes or goes black intermittently

For the Samsung QN90B Neo QLED TV, trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault.

Open record Samsung · HDMI no signal

Samsung QN90B Neo QLED TV shows no signal on HDMI

For the Samsung QN90B Neo QLED TV, input selection, source output, cable, port and handshake should be tested in a direct minimal chain.

Open record Samsung · firmware

Samsung QN90B Neo QLED TV software update will not install

For the Samsung QN90B Neo QLED TV, exact model/region, free storage, network and stable power are required.

Open record Samsung · AirPlay

Samsung QN90B Neo QLED TV will not AirPlay, Cast or screen mirror

For the Samsung QN90B Neo QLED TV, protocol support, same-network discovery, guest isolation and protected-content restrictions should be separated.

Open record Samsung · Wi-Fi

Samsung QN90B Neo QLED TV will not connect to Wi-Fi or keeps disconnecting

For the Samsung QN90B Neo QLED TV, tV radio versus router band/security/signal and provider service should be separated.

Open record Samsung · Bluetooth

Samsung QN90B Neo QLED TV will not pair with Bluetooth headphones or speakers

For the Samsung QN90B Neo QLED 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: QN43/50/55/65/75/85QN90B*
What that covers: Samsung TV; panel type, One Connect box, HDMI 2.1 ports, Tizen year and remote vary by model.

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 — Mini-LED LCD: 2022 Neo QLED Mini-LED LCD with Quantum Matrix dimming — very bright, but a backlight, so blooming/halo around bright objects and raised dark-room blacks are normal LCD behaviour, not a fault.
No Dolby Vision: HDR10, HDR10+ and HLG only — no Dolby Vision, like all Samsung TVs.
Smart platform / gaming: Tizen with Smart Hub, Gaming Hub and Game Bar. Four HDMI 2.1 ports, native 120 Hz panel, with 4K 120 Hz VRR and ALLM. Update at Settings › Support › Software Update; screen share Smart View / AirPlay 2.

Where these figures were read. Samsung QN90B 2022 spec sheet + displayspecifications/Reviewed (Neo QLED Mini-LED, 120Hz, 4×HDMI 2.1), read 2026-09-01

Manufacturer support for this product line. Samsung Support — TV support. Official Samsung TV manuals, software, diagnostics and repair entry point.

Exact questions

Questions that only have an answer for the Samsung QN90B Neo QLED 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.

Does the Samsung QN90B do 144Hz?+

The QN90B is a native 120 Hz panel, so console gaming runs at 4K 120 Hz with VRR across all four HDMI 2.1 ports. 144 Hz on Samsung's 4K Neo QLED arrived with the 2023 QN90C's VA-panel sizes and later; on the QN90B, 120 Hz is the ceiling and is not a fault.

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