Exact model-family answer directory

TCL QM7 QLED Mini-LED TV troubleshooting

Choose the symptom actually shown by 55/65/75/85/98QM751G. TCL TV; Roku TV, Google TV and Fire TV platforms use different menus and app stores. 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?

TCL · apps not working

TCL QM7 QLED Mini-LED TV apps will not open, update or install

For the TCL QM7 QLED Mini-LED TV, one app, all apps, storage, account/region and service status produce different corrections.

Open record TCL · eARC

TCL QM7 QLED Mini-LED TV ARC or eARC soundbar audio is not working

For the TCL QM7 QLED Mini-LED TV, correct labeled ports, matching CEC/eARC controls, output format and direct-chain testing matter.

Open record TCL · antenna

TCL QM7 QLED Mini-LED TV cannot find antenna channels

For the TCL QM7 QLED Mini-LED TV, antenna input/region, coax path, signal and a fresh channel scan should be verified.

Open record TCL · colors wrong

TCL QM7 QLED Mini-LED TV colors look wrong, washed out or tinted

For the TCL QM7 QLED Mini-LED TV, source format, HDMI range, picture mode, white balance and panel uniformity should be separated.

Open record TCL · game mode

TCL QM7 QLED Mini-LED TV game mode, 120 Hz or VRR is not working

For the TCL QM7 QLED Mini-LED TV, console/game support, HDMI port bandwidth, cable, input mode and format must all align.

Open record TCL · no sound

TCL QM7 QLED Mini-LED TV has picture but no sound

For the TCL QM7 QLED Mini-LED TV, output selection, mute/volume, format and the external audio path should be isolated.

Open record TCL · no picture

TCL QM7 QLED Mini-LED TV has sound but no picture

For the TCL QM7 QLED Mini-LED TV, built-in menus versus every external input separates panel/backlight faults from HDMI/source problems.

Open record TCL · restarting

TCL QM7 QLED Mini-LED TV keeps restarting or will not stay on

For the TCL QM7 QLED Mini-LED TV, outlet, external devices, sleep/timer/CEC and internal power protection should be isolated.

Open record TCL · too dark

TCL QM7 QLED Mini-LED TV picture is too dark or keeps dimming

For the TCL QM7 QLED Mini-LED TV, ambient/power saving, HDR mode, content mastering and panel behavior should be separated.

Open record TCL · remote not working

TCL QM7 QLED Mini-LED TV remote will not control the TV

For the TCL QM7 QLED Mini-LED TV, infrared power/volume and Bluetooth/RF navigation may be separate paths.

Open record TCL · flicker

TCL QM7 QLED Mini-LED TV screen flickers, flashes or goes black intermittently

For the TCL QM7 QLED Mini-LED TV, trigger, source, cable, refresh/HDR/VRR and built-in menu behavior identify the fault.

Open record TCL · HDMI no signal

TCL QM7 QLED Mini-LED TV shows no signal on HDMI

For the TCL QM7 QLED Mini-LED TV, input selection, source output, cable, port and handshake should be tested in a direct minimal chain.

Open record TCL · firmware

TCL QM7 QLED Mini-LED TV software update will not install

For the TCL QM7 QLED Mini-LED TV, exact model/region, free storage, network and stable power are required.

Open record TCL · AirPlay

TCL QM7 QLED Mini-LED TV will not AirPlay, Cast or screen mirror

For the TCL QM7 QLED Mini-LED TV, protocol support, same-network discovery, guest isolation and protected-content restrictions should be separated.

Open record TCL · Wi-Fi

TCL QM7 QLED Mini-LED TV will not connect to Wi-Fi or keeps disconnecting

For the TCL QM7 QLED Mini-LED TV, tV radio versus router band/security/signal and provider service should be separated.

Open record TCL · Bluetooth

TCL QM7 QLED Mini-LED TV will not pair with Bluetooth headphones or speakers

For the TCL QM7 QLED Mini-LED 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: 55/65/75/85/98QM751G
What that covers: TCL TV; Roku TV, Google TV and Fire TV platforms use different menus and app stores.

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 — QD-Mini LED QLED: 2024 mid Mini-LED QLED — bright and colourful with local dimming, but fewer zones than the flagship QM8, so slightly more blooming. Still a backlight, so some halo around bright objects on black is normal, not a fault.
Smart platform — Google TV: Runs Google TV. Update at Settings › System › About › System update; Chromecast built-in for casting. Not a Roku TV.
Gaming / HDMI: Native 144 Hz with two HDMI 2.1 ports (and two HDMI 2.0), VRR, ALLM and FreeSync. Put the console on an HDMI 2.1 port and enable Game Mode. Supports Dolby Vision, HDR10+, HDR10 and HLG.

Where these figures were read. us.tcl.com QM7 (2024) + Tom's Guide (QD-Mini LED, 144Hz, Google TV), read 2026-09-01

Manufacturer support for this product line. TCL Support — TV support. Official TCL manuals, firmware, Roku TV and Google TV troubleshooting support.

Exact questions

Questions that only have an answer for the TCL QM7 QLED Mini-LED 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.

Which HDMI ports do 4K 120/144Hz on my TCL QM7?+

Two of the four are HDMI 2.1 (4K 120/144 Hz, VRR); the other two are HDMI 2.0. If a console will not do high-refresh, it is likely in a 2.0 port — move it to an HDMI 2.1 input (check the labels), use a certified cable and turn on Game Mode.

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