Direct answer
For the LG G5 OLED evo TV, tV eligibility, competing hosts, pairing mode, distance and audio-output support should be isolated. First, forget the accessory on other hosts and pair nearby.
What this covers
- LG G5 OLED evo TV (OLED55/65/77/83/97G5*)
- 2025 LG TV; OLED/QNED panel, webOS release, HDMI bandwidth and Magic Remote vary by model and size.
- The specific fault this record addresses: will not pair with Bluetooth headphones or speakers
What it does not cover
- ×The same symptom on a different LG product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
The headphones are not in pairing mode
What separates it The set's scan does not list the device at all.
How to confirm Most headphones need a deliberate button hold to enter pairing mode, distinct from simply powering on, and they normally indicate it with a specific flashing pattern.
- 2
The headphones are connected to another device
What separates it They power on and immediately connect to a phone or laptop instead, so the television never sees them.
How to confirm Turn Bluetooth off on other nearby devices, or disconnect there explicitly, before pairing.
- 3
The television has reached its paired-device limit
What separates it New devices will not pair while previously paired ones still work.
How to confirm Televisions hold far fewer paired devices than a phone. Remove old entries from the list.
- 4
The set only supports its own branded accessories
What separates it Third-party headphones will not pair at all while the manufacturer's own do.
How to confirm Some televisions restrict audio output over Bluetooth to their own accessories. This is a platform limitation, not a fault, and is worth checking in the manual before troubleshooting further.
- 5
Audio and video are out of sync
What separates it Pairing works but lips do not match the sound.
How to confirm Bluetooth adds latency. Many sets have an audio-delay or lip-sync adjustment; where the offset is too large to correct, a low-latency transmitter on the headphone output is the practical remedy.
- 6
The connection drops at range
What separates it Audio cuts out when moving away from the set or when someone walks between.
How to confirm Bluetooth from a set whose antenna sits behind the panel has less usable range than from a phone.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- Whether the television's scan lists the device at all — if not, the headphones are not in pairing mode or are connected elsewhere.
- How many devices are already in the set's paired list.
- Whether the manual restricts Bluetooth audio to the manufacturer's own accessories.
- Whether the problem is failure to pair, or successful pairing with a sync delay.
Put the headphones into pairing mode deliberately
ReversibleThis is a specific button hold and is different from simply switching them on.
Turn Bluetooth off on nearby phones and laptops
ReversibleHeadphones commonly reconnect to a previous device before the television can find them.
Remove old entries from the set's paired-device list
ReversibleTelevisions hold far fewer pairings than a phone and refuse new ones once full.
Check whether the model restricts Bluetooth audio to its own accessories
ReversibleSome do, and no amount of troubleshooting changes that.
Use the set's audio-delay or lip-sync adjustment for a sync offset
ReversibleBluetooth adds latency by design; the adjustment exists specifically to compensate.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- OLED55/65/77/83/97G5*. 2025 LG TV; OLED/QNED panel, webOS release, HDMI bandwidth and Magic Remote vary by model and size.
- Panel
- OLED evo with LG's 2025 Primary RGB Tandem (four-stack) panel and Brightness Booster Ultimate — LG's brightest OLED, rated around three times the brightness of the B-series in a 10% window. Because it is self-emissive there is no backlight to bloom or clould, so a 'dimming' complaint is almost always the Auto Brightness Limiter pulling back a large bright window (normal OLED behaviour) or Energy Saving / ambient light sensing, not a backlight fault.
- Smart platform
- webOS 25 with the Magic Remote (pointer + voice). Update path is Settings › Support › Software Update; screen sharing is built-in AirPlay 2 and Miracast. App, cast and remote instructions written for Samsung Tizen, Google TV or Roku TV do not map to webOS.
- Gaming / HDMI
- Four HDMI 2.1 (48 Gbps) ports supporting up to 165 Hz, VRR, ALLM, NVIDIA G-Sync and AMD FreeSync Premium. High-refresh/VRR only engages when the input's Game Optimizer is on and the source is on an HDMI 2.1 port — a 'no 120/165 Hz or VRR' report is nearly always that mode or a sub-2.1 cable, not the panel.
- eARC
- eARC is on HDMI 2. A soundbar or receiver that loses Dolby Atmos or ARC audio should be on that specific port with HDMI-CEC (SIMPLINK) enabled on both devices before the fault is treated as hardware.
- Symptom boundary
- This record covers LG G5 OLED evo TV when it will not pair with Bluetooth headphones or speakers. A different symptom on the same hardware, or this symptom on a different LG product line, has its own record with its own causes and its own cited source.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. LG Support publishes this as "TV and home theater support". Official LG television manuals, webOS support, diagnostics and repair entry point. What that article does not carry is the model boundary — it is written for a product line, and OLED55/65/77/83/97G5* is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
Why does my LG G5 dim during bright scenes?+
That is the OLED Auto Brightness Limiter, not a fault. When a large part of the screen is very bright, the TV limits total panel power to protect the pixels and manage heat, so a big white window dims slightly. It is normal OLED behaviour on every LG OLED, including the brightest G5. Turning off Energy Saving and the ambient light sensor reduces other automatic dimming, but ABL on full-screen brightness cannot be disabled.
My LG G5 won't run 4K 120Hz or VRR from my console/PC.+
Connect the source to one of the HDMI 2.1 ports with a certified 48 Gbps Ultra High Speed cable, then turn on Game Optimizer for that input (Settings › General › Game Optimizer). VRR, ALLM and the 120–165 Hz modes only activate when that mode is on and the source is set to output them; the panel supports up to 165 Hz but it will sit at 60 Hz until the input mode is switched.
The TV can't find my headphones at all.+
Two things to check. First, put the headphones into pairing mode deliberately — that is a specific button hold, not just switching them on, and they will show a distinct flashing pattern. Second, turn Bluetooth off on your phone, because headphones commonly reconnect to the last device the instant they power on and the television then never sees them.
The sound is out of sync with the picture over Bluetooth.+
Bluetooth adds latency, so some delay is inherent rather than a fault. Most televisions have an audio-delay or lip-sync adjustment for exactly this. If the offset is larger than the adjustment can correct, a dedicated low-latency transmitter plugged into the headphone output is the usual remedy.
Does this answer apply to every LG model?+
No. It is scoped to OLED55/65/77/83/97G5*. 2025 LG TV; OLED/QNED panel, webOS release, HDMI bandwidth and Magic Remote vary by model and size.
What should I record before troubleshooting Bluetooth or headphones?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing Bluetooth, headphones. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Stop for swollen/hot batteries or damaged charging hardware.
Answer for the exact device and software version shown above.