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LG OLED TV test shows burn-in after just 4,000 hours

by Mark Tyson on 10 September 2018, 14:21

Tags: LG, Sony (NYSE:SNE)

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LG OLED burn-in

Back in July HEXUS wrote about the burn-in issue evident on LG C7 OLED TVs at a trade show in LA. Now there has been a follow-up by RTINGS, via ZDNet, which discusses a test of six LG OLED TVs.

The RTINGS test (YouTube video link, or watch above) tries to simulate natural but accelerated viewing behaviour of TVs over the last six months. The six units were turned on for five hours then off for 1 hour, on a cycle four times per day. During the six months testing so far, each TV has thus been running for 4,000 hours. Previously LG has stated that its TVs can run for 30,000 hours (equivalent of 10 years use with 8 hours viewing per day) before any image burn-in occurs.

In other test details; the two left-most TVs were tuned to CNN with its white and red lower screen status block, the top CNN watching TV ran at max brightness during the test period, the lower one at 200nits. The other test TVs were tuned to the following content (200nits brightness); American football, Live NBC, FIFA 18 gameplay, and Call of Duty: WWII gameplay.

Checking out the video you can clearly see the undesirable impact of a static solid colour banner, like on CNN, on the TV's image over time. Displaying solid magenta seems to show the image retention effect at its worst in this test (see video still above). As well as the obvious CNN banner burn-in, the FIFA 18 logo was slightly visible in the solid colour checks but the NBC and sports channels showed no such issues.

LG includes 'pixel refresher' technology which moves static images to prevent image burn-in but it would seem like it is ineffective on large blocks and RTUINGS says it causes uniformity issues. The RTINGS tests are ongoing (for a year) and updated regularly.

Sony firmware fail

In a recent Forbes report, Sony OLED TVs are claimed to be affected by an irksome bug. On recent Sony A1 and A8F (AF8 in Europe) OLED TVs users have been complaining that the display will suddenly and severely dim down across the whole screen if there is any constant static image element visible for over a minute.

To me it sounds like Sony has tried to implement an intelligent feature to reduce/eliminate screen burn, and perhaps save energy, when a TV image is paused and the viewer goes away to do something else. However, the dimming occurs in video games with static HUD overlays and sporting events with static on-screen elements too. Thus Forbes claims that the feature spoiled the recent World Cup for many sports fans and spoils the "vast majority of video games".

Game before/after dimming occurs

Frustratingly, a recent firmware update did little if anything to address this 'issue', the dimming looks somewhat less severe, so it might indeed be a 'feature' designed to prevent burn-in.



HEXUS Forums :: 41 Comments

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ever since plasmas were in their prime, the industry tried to convice us that burn in is not an issue annymore…a few decades later it's still an issue. Technology isn't advancing as fast as everyone think afterall
Moonister
ever since plasmas were in their prime, the industry tried to convice us that burn in is not an issue annymore…a few decades later it's still an issue. Technology isn't advancing as fast as everyone think afterall

*shrugs* depends on usage I guess. There's not a hint of burn in on my 7 year old plasma TV.
Moonister
ever since plasmas were in their prime, the industry tried to convice us that burn in is not an issue annymore…a few decades later it's still an issue. Technology isn't advancing as fast as everyone think afterall

My favourite story about Plasma burn in is someone bought a brand new Plasma TV and installed it in their home. Someone had their keys and went in and changed the TV to show a static image of some very heated pornography of two gentleman enjoying their relationship when the owner went away on holiday. That's a hard burn in to get rid of!

Nice to know it's still possible on todays tech, just takes longer :P
Moonister
ever since plasmas were in their prime, the industry tried to convice us that burn in is not an issue annymore…a few decades later it's still an issue. Technology isn't advancing as fast as everyone think afterall

Burn-in all but disappeared for many years. Manufacturers have gotten lazy on refining technology like OLED, and instead are just putting more ‘smart’ features in.

Ooo, yeah, I want Spotify on my TV, or Hulu… oh, wait, a resounding no. My TV is a screen. The media PC is the smart bit. Take the 2GHz octocore processor out of the TV and fix the actual screen.
Really not a huge fan of OLED for this reason primarily. It just is a problem, as much as people try to downplay it, and I'd much rather have a decent LCD screen either way. It's a downside rather than a selling point when I see it in the specs of a phone too.

I imagine flagships fare better but I've used quite a few OLED phones and every single one had irritating burn in after even a few weeks of use.

LCD is fine - it's not broken, don't fix it, especially not with objectively flawed alternatives! Its not like we don't have a good alternative or need to wait for one to be invented marketed!