Power management and signaling through HDMI port DPMS?
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By jikhead
I'm not getting any audio from the apps via the HDMI via ARC connection to my receiver. This occurred two weeks ago and was unable to resolve it, but ironically there was new firmware released that same day for my B6 (3/31/17) and this fixed the issue. However, now I again can't get it working after a TV reset and tinkering with the audio settings again. I tried to load the firmware again, but it appears this is not possible to forceable load the same firmware.
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By bohatier
Hi,
I believe it started to happen after last update - version 03.53.45, maybe the one before. After I quit YouTube app, TV will not get signal from HDMI settopbox no matter I try. Only solution is to unplug and plug back HDMI cable which is really annoying. Is it known issue? Is there any fix? I tried few workarounds, like disabling smart features and so on, but no luck.
TV model: OLED55B13LA
Example:
Settopbox is powered on, TV is showing signal over HDMI, everything is fine. Then I open YouTube, after some time exit, switch back to HDMI input of settopbox and TV says no signal. I re-plug cable and then it works fine.
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By Stylianos
i am having an issue with my LG OLED77C2 tv that started happening (i believe) once i have updated from web24 to 25. It seems like whenever the tv is displaying a source from any of my four HDMI inputs, while i am watching the screen goes black randomly for a few seconds and it loses audio as well during the black screen. Once this happens the audio usually comes back as soon as the image does, however not always. The audio might dissapear completely. In order to fix that i might need to power cycle the tv or unplug the hdmi input out, wait a little and then plug back in. Moreover, sometimes when the black screen flash happens it cripples most of my native apps on the tv. So if i switch to netflix or youtube right after the black screen flash, both apps populate normally all the video/film options in the main menu but when i try to actually play any of the video/films, they dont play and it is throwing an error. These black flashes never happen when i am watching netflix or youtube. Only when using my hdmi inputs. ive changed brand new high quality cables but that did not fix my issue. For the xbox i was already suing an ultra hish speed 2.1 hdmi cable but ive re placed that as well with a brand new one. ive also changed the tvs main board to a brand new and it still happening. Once the dealer changed the board, the tv was behaving normally without the issue. However after a few days i updated the tv to the latest firmware and this started happening. what do i do?
FYI: I tried EVERY SINGLE option to troubleshoot the issue. Disabled VRR, AMD Freesync, ALLM, HDMI Deep Colour, SIMPLINK, I basically set my tv to display video and audio in the most archaic way just to troubleshoot. Still doing it. I am using an xbox series x on input 1 and a mag520 box on input 3. Does it on both sources. Moreover, in case this helps whenever this happens while on the xbox the Dolby vision/HDR logo appears on the top right right after the video comes back once the black screen is over depending on what settings i have the xbox on. Also swapped to different inputs. Still doing it
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By John Peet
TV is a week old and the internal speaker has stopped working when in HDMI ARC + internal speaker sound output mode. The internal speaker itself works fine when in “internal speaker” sound output mode. I’ve checked all the settings that I can and can’t find anything that would correct this issue.
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By News Reporter
Strengthening Customer Value Via International Research Collaboration and
Comprehensive Field Testing Across Diverse Climates Over Two Years
SEOUL, Nov. 28, 2025 — LG Electronics (LG) continues to accelerate the development of high-performance heat pump technologies through its Global Heat Pump Consortium, expanding research across diverse climate conditions – from cold-humid regions to extreme heat. With a sharpened focus on efficiency, dependability and field-validated performance, LG is paving the way for the new era of energy-conscious heat pump innovation.
As global demand for cleaner heating intensifies and regions such as Europe phase out fossil-fuel boilers to support decarbonization targets, heat pumps are emerging as a key technology in the transition to more sustainable climate control. However, conventional heat pump often see reduced performance in low temperatures or cold-humid conditions, limiting adoption in some markets. To overcome this challenge and accelerate global deployment, LG is ramping up collaborative research initiatives to develop solutions optimized for diverse climates.
In 2023, LG established the Consortium for Advanced Heat Pump Research (CAHR) in Alaska, joining forces with the University of Alaska Anchorage (UAA) and the University of Alaska Fairbanks (UAF) to undertake R&D for high-efficiency cold-climate heat pump solutions. Since then, LG has expanded this collaborative network – now comprising 12 universities across five countries – and broadened its research into climate-specific heating, ventilation and air conditioning (HVAC) technologies.
These efforts are already yielding measurable results. At AHR Expo 2025 in the United States, LG and research partners from UAA and UAF presented findings based on long-term operational data from joint laboratories in Anchorage and Fairbanks, demonstrating improved low-temperature heating performance and efficiency by reducing thermal resistance in outdoor heat exchangers. The research contributed to the development of LG’s residential cold-climate heat pump, winner of the 2025 AHR Innovation Award in the Sustainable Solutions category.
Further momentum is coming from the European Consortium for Advanced Heat Pump Research (ECAHR), founded in June 2024. The consortium recently completed real-world testing of LG’s R32-based Air-to-Air Heat Pump (AAHP) in Norway. Results showed that energy use and carbon emissions reductions of approximately 60 to 80 percent, compared with an electric heater.1 These significant findings were published in the August and October issues of REHVA Journal,2 a respected publication for HVAC professionals.
To verify product performance in real-life environments, LG is conducting extensive field testing across seven global locations worldwide – including the United States, China, Norway and Saudi Arabia – spanning LG’s air-to-water heat pumps (AWHP), Multi V systems and residential air conditioners.
These field studies generate insights that directly influence product design. For example, observations that frost commonly accumulates on the lower section of outdoor heat exchangers in extreme cold led LG to introduce a redesigned structure that reduces frost buildup and enhances operational stability in severe winter conditions.
Strengthened by its global research collaborations and robust field-testing infrastructure, LG is advancing the development of next-generation heat pump technologies that deliver high efficiency and reliable performance in diverse climates. Recently, LG announced a partnership with King Saud University and Pusan National University to establish a tropical-climate testing facility in Saudi Arabia – reinforcing the company’s commitment to regionally optimized HVAC innovation.
“Through strengthened global research collaboration and extensive field validation, LG is accelerating the advancement of heat pump technology,” said James Lee, president of the LG ES Company. “We remain committed to delivering reliable, high-efficiency and sustainable heat pump solutions that meet the needs of customers around the world.”
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1 Level of reduction may vary depending on outdoor temperature.
2 Evaluating the Economic and Environmental Benefits of Air-to-Air Heat Pump Systems in Nordic Climates, and Performance Analysis of Air-to-Water Heat Pump Systems Using R290 Refrigerant Adapted to Nordic Climates.
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