2018 LG C8-E8 Owners' Thread (No Price Talk) - Page 542 - AVS Forum | Home Theater Discussions And Reviews
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post #16231 of 22055 Old 04-29-2019, 06:15 PM
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Originally Posted by chunon View Post
That’s a known issue with the atv unfortunately .


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Really? I hadn't heard that (no pun intended ). I usually keep my avr at the same volume level, or actually a little bit lower for all of my sources (HDTV, ATV4k, and UBK90).

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post #16232 of 22055 Old 04-29-2019, 06:17 PM
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Originally Posted by Otto Pylot View Post
Really? I hadn't heard that (no pun intended ). I usually keep my avr at the same volume level, or actually a little bit lower for all of my sources (HDTV, ATV4k, and UBK90).


Yeah for me it’s consistently lower has been that way on my soundbar and now my receiver . Got was way lower volume compared to dtv.


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post #16233 of 22055 Old 04-29-2019, 06:17 PM
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Quote:
Originally Posted by rynberg View Post
I've owned the C8 since around New Years, only recently have I been struck with the flashing/macroblocking bug. Last night's GoT was pretty much unwatchable for large sections with the worse noise I've ever seen on a display (through both DTV and HBO Go). This was on firmware 04.10.05.

I upgraded to 04.10.15 after the show and then came here to catch up on the last few months. I see there has been a .31 and now a .55 update, however, my TV won't pull down any update newer than the .15. I assume I'm forced to do a manual update with a USB stick?

I'm reluctant to update past 04.10.15 due to the potential black crush issues, but the flashing/macroblocking problem is so bad that it's really ruining the TV for me.

I've had mine since October (still on .15) and do not have the flashing/macroblocking. Last night's GoT was fine even though the too dark editing was difficult at times.
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post #16234 of 22055 Old 04-29-2019, 06:22 PM
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Originally Posted by chunon View Post
Yeah for me it’s consistently lower has been that way on my soundbar and now my receiver . Got was way lower volume compared to dtv.


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Interesting. Maybe I'll have to listen closer. The C8 is not our primary tv. For that we use an LG LCD for the downstairs HTS and I keep the usual listening volume at -26dB or -27dB, which is comfortable for us at our viewing distance. The same for the upstairs HTS which is the C8, with about the same listening distance and volume setting. Both avr's are Yamaha's but that shouldn't make a difference. ATV4k upstairs, ATV4 downstairs. I did run downstairs to check the pq a couple of times and the C8 was better than the LCD (as I expected).
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post #16235 of 22055 Old 04-29-2019, 07:10 PM
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I don’t seem to recall noticing flashing or nearly as much when I first got my C8 and was just wondering if this was introduced through FW or has just always been there at the same level?
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post #16236 of 22055 Old 04-29-2019, 07:28 PM
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Originally Posted by MeganElisabeth View Post
I don’t seem to recall noticing flashing or nearly as much when I first got my C8 and was just wondering if this was introduced through FW or has just always been there at the same level?
So are you seeing flashing on everything you are watching..ie. Netflix 4k, 4k HDR Blu Rays, regular Blu Rays, Amazon or just regular broadcast/streaming TV? If it's all of those it might be the FW, if it's just the TV shows, then it might be the source. As someone said earlier....crap in, crap out. I would check to see if you have these issues with every source, or just one. I don't usually have issues, but I did on last weeks broadcast of GoT. When I watched the on demand of the same episode everything was fine...so again, it might be just your source.
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post #16237 of 22055 Old 04-29-2019, 07:59 PM
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Quote:
Originally Posted by MeganElisabeth View Post
I don’t seem to recall noticing flashing or nearly as much when I first got my C8 and was just wondering if this was introduced through FW or has just always been there at the same level?
So are you seeing flashing on everything you are watching..ie. Netflix 4k, 4k HDR Blu Rays, regular Blu Rays, Amazon or just regular broadcast/streaming TV? If it's all of those it might be the FW, if it's just the TV shows, then it might be the source. As someone said earlier....crap in, crap out. I would check to see if you have these issues with every source, or just one. I don't usually have issues, but I did on last weeks broadcast of GoT. When I watched the on demand of the same episode everything was fine...so again, it might be just your source.
Oh I completely agree and understand with the sourcing. However, in my case it’s streaming/Netflix/4k blu rays. Not very often, knock on wood. Just trying to determine if I’m just noticing it more because of the mentions everywhere and it’s always been there or if FW introduced the issue. Was the macroblocking issue always there since the beginning or did that come with FW?
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post #16238 of 22055 Old 04-29-2019, 09:06 PM
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Can someone link me to the FAQ? I cannot seem to find it!
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post #16239 of 22055 Old 04-29-2019, 10:01 PM
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Can someone link me to the FAQ? I cannot seem to find it!
See post #15972 .
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post #16240 of 22055 Old 04-29-2019, 10:12 PM
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2018 LG C8-E8 Owners' Thread (No Price Talk)

.55 came in my set today via OTA. Updated with no issues. Blacks remain the same from .31.

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post #16241 of 22055 Old 04-29-2019, 10:27 PM
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Has anyone noticed the noise from the processor when watching dark scene content? It is quite audible when the volume of the audio is at lower levels. It is also very noticeable when you pause content. Is this a product of a processing setting or the pixel shifter? Any ideas? Thanks!

Update: Apparently this is a know issue without a resolution?

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post #16242 of 22055 Old 04-29-2019, 10:31 PM
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Quote:
Originally Posted by 3isRC View Post
.55 came in my set today via OTA. Updated with no issues. Blacks remain the same from .31.

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Yea it came to my set OTA as well but I will wait to download it because .15 is pretty good

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post #16243 of 22055 Old 04-29-2019, 11:39 PM
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Originally Posted by rynberg View Post
I've owned the C8 since around New Years, only recently have I been struck with the flashing/macroblocking bug. Last night's GoT was pretty much unwatchable for large sections with the worse noise I've ever seen on a display (through both DTV and HBO Go). This was on firmware 04.10.05.

I upgraded to 04.10.15 after the show and then came here to catch up on the last few months. I see there has been a .31 and now a .55 update, however, my TV won't pull down any update newer than the .15. I assume I'm forced to do a manual update with a USB stick?

I'm reluctant to update past 04.10.15 due to the potential black crush issues, but the flashing/macroblocking problem is so bad that it's really ruining the TV for me.
OK, I manually updated to 04.10.55. I can see that the picture is slightly darker but I can still see details in near black. The horrible flashing/macroblocking bug is essentially gone! I went back to last night's GoT and the only noise in the near blacks looks like source errors and not the TV. Anyone who is suffering the flashing/macroblocking bug should definitely update!
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post #16244 of 22055 Old 04-29-2019, 11:55 PM
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Originally Posted by DrMichael View Post
Has anyone noticed the noise from the processor when watching dark scene content? It is quite audible when the volume of the audio is at lower levels. It is also very noticeable when you pause content. Is this a product of a processing setting or the pixel shifter? Any ideas? Thanks!

Update: Apparently this is a know issue without a resolution?

There is a thread right underneath this one on this forum I'ts not the processor. Its coil whine from the power supply that creates a hissing type sound especially in dark content. The only fixes is to either replace the TV with another. Get the power supply swapped out and hope its better or dampen the sound from behind the TV yourself.
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post #16245 of 22055 Old 04-30-2019, 02:44 AM
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Originally Posted by DrMichael View Post
Has anyone noticed the noise from the processor when watching dark scene content? It is quite audible when the volume of the audio is at lower levels. It is also very noticeable when you pause content. Is this a product of a processing setting or the pixel shifter? Any ideas? Thanks!



Update: Apparently this is a know issue without a resolution?


Yep known issue , I got lucky apparently my panel
Is silent.


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post #16246 of 22055 Old 04-30-2019, 03:20 AM
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Hi, just wanted to inform that LG just told me that a new firmware with gammafix is in testphase and will be released in 2 weeks, if it passes testphase.
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post #16247 of 22055 Old 04-30-2019, 04:15 AM
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Hi, just wanted to inform that LG just told me that a new firmware with gammafix is in testphase and will be released in 2 weeks, if it passes testphase.
Thanks. Great news. I hope the fix involves deeper tweaks and improvement (maybe better dithering) then just playing with some values as a workaround . I guess some of the test builds will be on the Test channel (Engineering Mode) soon

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post #16248 of 22055 Old 04-30-2019, 05:53 AM
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Quote:
Originally Posted by DrMichael View Post
Has anyone noticed the noise from the processor when watching dark scene content? It is quite audible when the volume of the audio is at lower levels. It is also very noticeable when you pause content. Is this a product of a processing setting or the pixel shifter? Any ideas? Thanks!

Update: Apparently this is a know issue without a resolution?
You must have a 77? It’s very common on the c8 77 inch. I went through 4 77 and only one was silent. The sound is coming from the power supply. You can see if lg will replace the power supply.
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post #16249 of 22055 Old 04-30-2019, 06:38 AM
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You must have a 77? It’s very common on the c8 77 inch. I went through 4 77 and only one was silent. The sound is coming from the power supply. You can see if lg will replace the power supply.
I have NOT noticed any such noise during dark scenes on my C877.

Again, so far (since my purchase about 2 months ago) the only anomaly I've noticed is a thin horizontal ray of light across the very bottom of my screen when watching programs on NBC. It is most noticeable during dark scenes and especially when the display turns all black when cutting to a commercial. I don't like it but I can live with it, for 95% of my viewing is on other channels, watching Blu-rays, or streaming from Amazon Prime.

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post #16250 of 22055 Old 04-30-2019, 06:39 AM
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Last night I rewatched on HBOGO on a Roku vs the Amazon stream from the built in app on release.


Both had issues with banding, blocking and flashing. Mostly better on HBOGo last night. For example the night sky scenes where faint clouds are visible were ok on HBOGO but a blocky mess on Amazon.

I think this episodes is basically a torture test for any kind of compression. It is meant to look this dark. There is no light source in the content, nor is there meant to be. While I wouldn't be surprised if HBO tweaked things a bit for the disc release, it is meant to look dark. I would say 90% of the artifacts people are seeing are from compression.

I am on .15 still and when I rewatched the entire series I started with my digital copies through Vudu and switched to my blu rays after seeing similar issues in dark scenes. Those issue where not present on the discs. I did not have flashing issues. This is the first time I have seen that issue crop up and I wonder if being on .31 with low end gamma corrected they would still be present anyway.

Also, the audio for this episode was unusually low ands compressed on both platforms. I had to turn it up much more than any other episode of GOT and it still sounded flat.
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post #16251 of 22055 Old 04-30-2019, 08:23 AM
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Any fix for a stuck pixel, might be green or white? I have one for on the right side, it can be seen only on black. Since I know where it is, my eyes are drawn to it. But if just looking at the centre or don't know that it exists you won't notice it.

I tried pixel refresher last night but still there this morning, I ran pixel refresher again this morning and will check when I get home in the afternoon.

There are youtube videos that might fix it but not sure if it will really fix since I ran one for about 30 minutes and still there

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post #16252 of 22055 Old 04-30-2019, 08:33 AM
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Quote:
Originally Posted by rynberg View Post
OK, I manually updated to 04.10.55. I can see that the picture is slightly darker but I can still see details in near black. The horrible flashing/macroblocking bug is essentially gone! I went back to last night's GoT and the only noise in the near blacks looks like source errors and not the TV. Anyone who is suffering the flashing/macroblocking bug should definitely update!
It looks noticeably better with 04.10.55 streaming over HBOGo than on 04.10.31. I wonder if it's the firmware or if the stream is just less compressed compared to when everyone and their brother is watching live on Sunday night.
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post #16253 of 22055 Old 04-30-2019, 08:49 AM
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I rolled back to .15 last night from engineering .50. No meter but blacks look better to me.

Thanks about the tip for iPhone users on the remote app!
I'm sorry, but I can't find the post referenced above. I have a service remote and can get into engineering mode, but I thought you could only roll back to .15 using an android phone. Is there now something that iPhone users can use, too?
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post #16254 of 22055 Old 04-30-2019, 08:52 AM
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I'm sorry, but I can't find the post referenced above. I have a service remote and can get into engineering mode, but I thought you could only roll back to .15 using an android phone. Is there now something that iPhone users can use, too?
This



https://www.avsforum.com/forum/40-ol...l#post57958736
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post #16255 of 22055 Old 04-30-2019, 09:04 AM
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Perfect. Thanks!
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post #16256 of 22055 Old 04-30-2019, 09:23 AM
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I've got a nice idea to solve the compression problem - let's all go back to analogue! . Remember the days of fully uncompressed TV? The picture quality of 1990s TV is probably the peak (for SDR, at SD res). And Japan had an analogue HD 16:9 TV system... we should have savoured it while we had the chance...

@Zaxcom , the near-black overshoot problem is highly panel-specific. The black level of your individual panel will result in either you seeing it a lot, or only a bit, or never. This is what you could be "missing". HTH
Would the combining of chroma and luminance count as compression?

I for one don't miss NTSC at all.
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post #16257 of 22055 Old 04-30-2019, 09:43 AM
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Again, so far (since my purchase about 2 months ago) the only anomaly I've noticed is a thin horizontal ray of light across the very bottom of my screen when watching programs on NBC. It is most noticeable during dark scenes and especially when the display turns all black when cutting to a commercial. I don't like it but I can live with it, for 95% of my viewing is on other channels, watching Blu-rays, or streaming from Amazon Prime.
Maybe check the Picture menu > Aspect Ratio... Although 'Just Scan' is the setting for 1:1 pixel mapping, '16:9' may eliminate the thin line on screen bottom for your NBC channel.
https://www.lg.com/us/support/produc...-menu-settings
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post #16258 of 22055 Old 04-30-2019, 09:53 AM
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Maybe check the Picture menu > Aspect Ratio... Although 'Just Scan' is the setting for 1:1 pixel mapping, '16:9' may eliminate the thin line on screen bottom for your NBC channel.
https://www.lg.com/us/support/produc...-menu-settings
I did try that, but to no avail. Others suggested that the problem lies solely with the broadcasts on NBC and not with the display. I tend to agree with that line of thinking, especially since this problem is nonexistent on other channels.
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post #16259 of 22055 Old 04-30-2019, 10:00 AM
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Does anybody have a link to slides or videos to check for screen uniformity? I’m trying to decide whether or not to replace the tv or have lg try and fix the buzzing. If I have a great panel I’m inclined to have lg come out.
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post #16260 of 22055 Old 04-30-2019, 10:04 AM
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Does anybody have a link to slides or videos to check for screen uniformity? I’m trying to decide whether or not to replace the tv or have lg try and fix the buzzing. If I have a great panel I’m inclined to have lg come out.
If u have a 77inch tv the buzzing is from the transformer. almost all the 77s have this issue there's only been a few people that said theirs is quiet.

For the slides you can just go to YouTube and search for uniformity slides and use those

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