TVs and monitors · LG
Owners keep the LG C9 for its picture, deep blacks and rich color, and many say theirs is still running well years after they bought it.
Longevity is clear praise. Owners describe sets still going strong after several years of regular use, and one reports just under 10,000 hours on the panel with no burn-in.
Dead pixels are a clear complaint. Owners of older sets describe dead pixels appearing along the edges of the screen after years of use. Up close they are noticeable, and some owners have upgraded because of them.
The LG C9 is a 4K OLED smart TV from LG's 2019 range. It is for people who want a home TV with deep blacks and strong contrast for films, sport and games. LG now lists it as discontinued.
| Screen sizes | 55, 65 and 77 inches |
|---|---|
| Panel type | OLED with pixel-level dimming |
| Resolution | 4K Ultra HD (3,840 x 2,160) |
| Refresh rate | |
| HDR | Dolby Vision, HDR10, HLG |
| Inputs | 4 HDMI (eARC on HDMI 2), 3 USB 2.0, Ethernet, RF antenna, composite AV in, optical audio out |
| Smart platform | LG webOS with Magic Remote (ThinQ AI, Google Assistant, Alexa) |
| Warranty | 1 year parts and labour |
From the maker's spec page, checked October 5, 2026. A blank row means the maker does not state it.
OLED means each pixel makes its own light, so dark scenes look truly black even in a dim room. 4K with Dolby Vision gives you sharp detail and brighter highlights on shows that support it. Four HDMI ports let you connect a game console, streaming box and cable box at once. eARC on one port can send full-quality sound to a soundbar. The 1-year warranty is short, so a used one is probably no longer covered.
Pick up to three. You get a page with just those, side by side, on the subjects owners raised.
Years in, the picture is still why people keep it. Owners praise the black levels, contrast and color, and most accounts of brightness are positive. One owner who later bought a newer, much more expensive set said they had loved the C9 since it came out. The glossy screen is the main adjustment: one owner in a room with lots of windows found the reflections a regular annoyance and moved to a matte screen.
Owners are divided on whether upgrading is worth it. Some see no point while their C9 still works. Others moved to newer LG models and noticed the difference, although one wondered whether that was partly because their 2019 set had dimmed with age. Price is also divided: some think the set is worth what it cost, others weigh the extra expense of stepping up a tier. One owner rooted their set to block updates, ads and notifications, and said they had stopped worrying about upgrading.
The panel itself holds up for many owners, and accounts of panel reliability are mostly positive. Burn-in comes up in two groups of accounts. One group is evenly divided. The other is mostly reassuring, including an owner whose burned-in C7 was replaced with a C9 that they found much more resistant. Where burn-in did happen, it came from static game elements such as a health bar and crosshair, after a few hundred hours. Owners who avoid it keep the burn-in protection feature on, watch varied content, avoid using the set as a monitor, and turn down or hide in-game UI where they can.
The failures owners describe are dead pixels at the edges, one report of a green blob that the owner put down to red subpixel wear rather than burn-in, and mentions of delamination on this generation of panels (one owner said the CX was hit hardest). Owners dealing with dead pixels have replaced the set, and one who took store credit had to get rid of the old TV themselves. There are a fair number of multi-year accounts, but several of these failure reports each come from only one owner, so this sample cannot say how common they are.
Parts named in the 4 accounts that describe a failure
From 30 owner accounts that said how long they have had it. Own one? Add how long yours has lasted.
Counted from the owners who raised each subject, not from everyone. A subject is judged once at least 4 owners raise it.
78 more subjects came up from fewer than 4 owners each, which is not enough for a fair reading. To see how it stacks up, compare it with another machine.
The same owner, asked again at each point. Fills in as owners answer.
Two questions: how long you have had it, and anything you would like to say about it. Then we ask again as it ages. This helps our mission.
More in tvs and monitors: Samsung QD OLED, LG CX, LG B4.
Among the 30 owner accounts here that gave a duration, 4 described a failure. Parts named most: panel (dead pixels), panel/restart issue.
Before you buy one used, ask the seller: how old it is, whether it was ever repaired and by whom, and whether any of the parts above have been replaced. Ask to see it run. A receipt tells you the warranty start date; most makers honour the term only for the first owner.
Counted from public accounts by people who said they own it, and summarised by Still Kicks in its own words. Not a manufacturer claim, a lab test or an estimate.
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