LG 48CX OLED - 4K 120 Hz

Only got this yesterday so haven't played about enough to notice on this monitor, but on my older B6 (living room TV) the ABL kicks in after a few minutes of a static image on screen, e.g. pause movie/game, and gets brighter once you have significant differences in what's being displayed, e.g. when you un-pause what you are watching.

Just for clarity, the autodimming (ASBL) at 3 minutes can be turned off, I've done it and it works great.

See instructions here: https://hardforum.com/threads/lg-48cx.1991077/page-79#post-1044661831

Awesome thanks for the info and link to switch it off, sounds like its a good idea to leave it on though would be pretty crazy to have it happen during normal viewing of film or tv but least the options there to switch it off if it does.
 
I have something like this. You want it to have some flexibility with positioning, up/down, left/right, tilt etc.

reflecta-plexo-100-9060t.jpg

That looks like it would stick out quite a far bit from the wall?

Looks awesome still, think it's been advised not to use them on plasterboard walls though so will need to stick with geefix plaster mounts and a more flat based wall mount like the Yousave slim wall mount with 5mm wall distance on rainforest.
 
I believe so, as it's constantly changing the pixels from whatever colour they were displaying to black. Over a long period of displaying the same colour per pixel, this will most likely have a massive affect.

BFI (black fame insertion) is one of the main big features that the CX gains over the C9 (C9 can't do BFI @ 120hz), and it's an awesome feature. Running mine on auto and it really does smooth everything out, though most noticeable in fast moving games.

Where's that setting?
 
I believe so, as it's constantly changing the pixels from whatever colour they were displaying to black. Over a long period of displaying the same colour per pixel, this will most likely have a massive affect.

BFI (black fame insertion) is one of the main big features that the CX gains over the C9 (C9 can't do BFI @ 120hz), and it's an awesome feature. Running mine on auto and it really does smooth everything out, though most noticeable in fast moving games.

One could argue the opposite, as the pixels are switched on/off instantly rather than transitioned to black (which would be the holy grail of CRT level smooth motion btw). All electronics fail prematurely from constant power cycling.
 
Last edited:
One could argue the opposite, as the pixels are switched on/off instantly rather than transitioned to black (which would be the holy grail of CRT level smooth motion btw). All electronics fail prematurely from constant power cycling.

These TV's are backed by a warranty, and LG wouldn't see fit to include a BFI mode that would kill the TV prematurely.

Take the below scenario:

Mr pixel number 132,324 is being told to display red for 2 hours solid. This is a pixel in office 365's UI.
Mr pixel number 132,325 is being told to switch between red and black (off) multiple times per second, over a 2 hour period. The total time spent displaying red will be less than the above.

I'm no OLED engineer, but it seems likely than the second scenario, with BFI enabled, will protect against burn in more in the long run.

Do you own one of these TV's, sadbuttrue? Just wondering, as you seem to always post in the thread claiming the TV will fail due to overheating, burn in, due to power cycling. A very negative tone. Unsure if I'm feeding a troll here.
 
Can anyone post a photo of a white screen? Interested in how much tint you have (blue and yellow tint). Only really an issue if using as a monitor for white webpages etc. Unless really bad would not be obvious in other stuff.
 
These TV's are backed by a warranty, and LG wouldn't see fit to include a BFI mode that would kill the TV prematurely.

Take the below scenario:

Mr pixel number 132,324 is being told to display red for 2 hours solid. This is a pixel in office 365's UI.
Mr pixel number 132,325 is being told to switch between red and black (off) multiple times per second, over a 2 hour period. The total time spent displaying red will be less than the above.

I'm no OLED engineer, but it seems likely than the second scenario, with BFI enabled, will protect against burn in more in the long run.

Do you own one of these TV's, sadbuttrue? Just wondering, as you seem to always post in the thread claiming the TV will fail due to overheating, burn in, due to power cycling. A very negative tone. Unsure if I'm feeding a troll here.

Thanks Dave2150 that was my own reasoning for asking as well. I guess it depends on what the actual mechanism for burn-in is.

However turning off/on a lot is normal activity for a pixel displaying a TV/Movie image to my mind so I'm not convinced sadbuttrue's argument holds water.
 
has anyone here had a b9 at all, the reason i ask is i talked myself into getting a c9 this week and found that everywhere has no stock and will not be getting them in as the 2020 versions are out, but the 2020 versions are a lot more expensive, so the only one i can get for a reasonable price is a b9, so is there enough difference to warrant the higher price tag for other models.
 
has anyone here had a b9 at all, the reason i ask is i talked myself into getting a c9 this week and found that everywhere has no stock and will not be getting them in as the 2020 versions are out, but the 2020 versions are a lot more expensive, so the only one i can get for a reasonable price is a b9, so is there enough difference to warrant the higher price tag for other models.

The C9 have a different stand and are brighter and a faster processor but thats it. Same screen and features AFAIK.
 
Speaking of burn in my J5 got it from Youtube dark theme and it made my white background pinkish. I guess phones have no burn in protection and i just hope it goes away. I only realized yesterday as well that the cause was sleeping with asmr videos on it

What a tit i feel like, But thankful i learned this now and not on a future TV. :D
 
has anyone here had a b9 at all, the reason i ask is i talked myself into getting a c9 this week and found that everywhere has no stock and will not be getting them in as the 2020 versions are out, but the 2020 versions are a lot more expensive, so the only one i can get for a reasonable price is a b9, so is there enough difference to warrant the higher price tag for other models.

B9 is great. I have the 55" and it's fantastic. I've seen side by side comparisons with the C9 and it's barely noticeable. Certainly not worth the price difference. G-Sync works flawlessly also on my 2080Ti. If you can get the B9 for a good price, go for it. You won't be disappointed at all. :)
 
Ok I tried to get as close as possible to what I can see in real life, the camera probably exagerates the banding as the photo makes the screen look lighter. I don't notice very many problems in normal content. Overall I would not call this terrible... Which is why I am not sure if a replacement would be likely to be an improvement... I know a perfect one does not exist but not sure if I could get a better one, I have certainly seen a lot worse than this one, but the yellow tint is a bit irritating on a white background, in normal content I do not notice it too much. What do you think? Should I replace or keep? Anyone have a 48 that looks better than this?
 
Last edited:
Nirk:

I agree with peahead if it's not really effecting your enjoyment when viewing normal TV then you should be OK, just like in the other threads reply to your post you won't really find a perfect TV set I know since I have read all 109 pages of that thread, CX series in general still has banding issues, lacks DTS and floating blacks in Dolby Vision mode, but its still usually much better than what LCD/LED issues can get.

I had pretty bad DSE and light bleeding on my LED TV but it improved after 2-3 weeks of general use, you may find it improves later on. May also improve after a few pixel refreshes the auto ones when you switch off the screen after some time.

It's the black streaking banding and giant blobs (black or green or other) that would distract really or id consider somewhat faulty but so far I think its only been seen on the 77" CX.

The good news is the 48cx tends to have less banding issues or screen issues, maybe its due to being smaller.

If you are still not happy after a while I guess you still have usually 30 days to return products if their not of satisfactory quality (but get it in email and ask first if you can return it and any cost involved, you may have to pay delivery cost but shouldn't pay a restocking fee usually), its like the Panel lottery discussed a lot in the past you may get 5 panels and 3 are good and 2 are worse, its a lottery sometimes.
 
gfhtfhhtfhfth.jpg"
Ok I tried to get as close as possible to what I can see in real life, the camera probably exagerates the banding as the photo makes the screen look lighter. The banding on this one actually looks slightly worse now than it did out of the box. I don't notice very many problems in normal content, if I look for it I can notice the band in the center occasionally and sometimes the slightly yellow patch right side. Overall I would not call this terrible... Which is why I am not sure if a replacement would be likely to be an improvement... I know a perfect one does not exist but not sure if I could get a better one, I have certainly seen a lot worse than this one, but the yellow tint is a bit irritating on a white background, in normal content I do not notice it too much. What do you think? Should I replace or keep? Anyone have a CX48 that looks better than this?
I would not accept anything less than near-perfection (as much as is realistic) on a screen of this price. If you notice it, and it annoys you, then get it changed.
 
I would not accept anything less than near-perfection (as much as is realistic) on a screen of this price. If you notice it, and it annoys you, then get it changed.

This is the problem though, you will spend most of your life replacing things if you want perfect / very close to perfect... All of these screens have banding or tint or some other problem and the best option is to keep whichever you are happy with in normal content, not so much if you can see the issue on test slides etc. Only time I really notice is web pages and I don't plan to use as a monitor for web browsing, so I am leaning towards just keeping it, judging from looking on other forums at other peoples panels, this one seems relatively good.
 
Nirk:

I agree with peahead if it's not really effecting your enjoyment when viewing normal TV then you should be OK, just like in the other threads reply to your post you won't really find a perfect TV set I know since I have read all 109 pages of that thread, CX series in general still has banding issues, lacks DTS and floating blacks in Dolby Vision mode, but its still usually much better than what LCD/LED issues can get.

I had pretty bad DSE and light bleeding on my LED TV but it improved after 2-3 weeks of general use, you may find it improves later on. May also improve after a few pixel refreshes the auto ones when you switch off the screen after some time.

It's the black streaking banding and giant blobs (black or green or other) that would distract really or id consider somewhat faulty but so far I think its only been seen on the 77" CX.

The good news is the 48cx tends to have less banding issues or screen issues, maybe its due to being smaller.

If you are still not happy after a while I guess you still have usually 30 days to return products if their not of satisfactory quality (but get it in email and ask first if you can return it and any cost involved, you may have to pay delivery cost but shouldn't pay a restocking fee usually), its like the Panel lottery discussed a lot in the past you may get 5 panels and 3 are good and 2 are worse, its a lottery sometimes.

Thanks for reply, yes the banding is relatively good, not that visible in normal content especially compared to some I have seen, also I have no horizontal lines, DSE, buzzing, dark patches etc etc. Which other people have complained about on the CX48... Main issue is I can notice the white uniformity on web pages, but even then its not that bad and seems to change a bit with room temp? For example when room is cool, it looks less obvious, maybe it has improved not sure.

Overall though as I do not plan to use it as monitor for web browsing, as I just said in the previous post, unless it gets worse I am leaning towards keeping it. Save myself the hassle of quite possibly receiving a worse replacement, this is after researching this on other forums and other peoples pictures, the CX48 is relatively good but some pictures of peoples panels are shocking...

For example these pictures from a Google search look appaling and they would go straight back !

T97G5nq.jpeg

0fWHqul.png

40b4159ce492487cc810d2ede6f322e3.jpg


ve9yjafk2lz11.jpg
 
Thanks for reply, yes the banding is relatively good, not that visible in normal content especially compared to some I have seen, also I have no horizontal lines, DSE, buzzing, dark patches etc etc. Which other people have complained about on the CX48... Main issue is I can notice the white uniformity on web pages, but even then its not that bad and seems to change a bit with room temp? For example when room is cool, it looks less obvious, maybe it has improved not sure.

Overall though as I do not plan to use it as monitor for web browsing, as I just said in the previous post, unless it gets worse I am leaning towards keeping it. Save myself the hassle of quite possibly receiving a worse replacement, this is after researching this on other forums and other peoples pictures, the CX48 is relatively good but some pictures of peoples panels are shocking...

For example these pictures from a Google search look appaling and they would go straight back !

T97G5nq.jpeg

0fWHqul.png

40b4159ce492487cc810d2ede6f322e3.jpg


ve9yjafk2lz11.jpg


Wow those are pretty bad was that the cx48 model though ?

I know a few guys on avforums said after a few days their picture got better overall and less problematic. I can understand fully though if I spent 1.5K it has to be good good not just ok or like those screenshots, I would certainly get it in writing by which ever company you got it from there exact tv return policy and return procedure and cost also since if by say week 3 it's not improved, id rather send it back at my own expensive or £30 carrier charge then hang onto a 1.5K bad set.
 
Back
Top Bottom