Wasabi Mango UHD400 40" 4k Display

Anyone know how much these screens weigh? Would like to buy a couple of them and mount them to the arms I already have, if possible. I already have a 40" Seiki Pro which, surprisingly, worked with the arms I already had. The arms are supposed to max out at 19lbs, but the Seiki is 25lbs.
 
catdogmouse said:
Anyone know how much these screens weigh? Would like to buy a couple of them and mount them to the arms I already have, if possible. I already have a 40" Seiki Pro which, surprisingly, worked with the arms I already had. The arms are supposed to max out at 19lbs, but the Seiki is 25lbs.
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10.8kg, or about 23.8 pounds...
 
Anyone know how to pull up the Firmware version on the monitor?




Also, I did some panel tests using the calibrator. Doing a grid luminance test, 9 grid, all sectors were within 12% of eachother at 88% brightness. Going to recalibrate and retest at 100%, since 95+% makes my scanline issue go away.
 
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tacos4me said:
If you pull the OSD up, it's right in the bottom left corner. Real4Kxxxxxxx. Unit I just got is 0222VS.
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Thanks, I was curious, thought that was the model number. From what I can see, they're using, that's an old firmware.

0222VS released on: 2016-02-23 -- This one seems to use the non-European Month/Day (02/22) - VS
0405VS released on: 2016-05-05 -- Seems to be MODEL (REAL4K), DATE (European Day/Month on this one) 04/05 - VS

Firmware is here: 와사비망고 > Download Center > UHD400 REAL 4K HDMI 2.0 재은이 펌웨어

Going to try it out.

Translated instructions say to put the Merge.bin onto a USB drive (in the root directory), unplug the monitor power, put USB drive in service-USB port and plug power in. The LED light should flash red/blue until finished. Once it stops flashing, the firmware has been updated. I'll post back once done. Doing it now.

*EDIT*

Completed without a hitch. The LED will slowly alternate between blue and purple, once completed it'll stay blue.
 
tacos4me said:
My UHD400 feels much worse than my EF9500, which is supposedly ~50ms. Not bothered in games so much, it's just the cursor in Windows that's starting to bug me. Moving from dual U3415W at work to the UHD400 at home is pretty gross.
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What mouse are you using? I thought the cursor was a laggy nightmare on the desktop but once I upped my mouse DPI it cleared up. Seems crazy, but I find it hard to believe I mentally tricked myself into thinking the Mango input lag isn't as bad as it felt at the exact same second I tried a higher mouse DPI.
 
CaptainClueless said:
What mouse are you using? I thought the cursor was a laggy nightmare on the desktop but once I upped my mouse DPI it cleared up. Seems crazy, but I find it hard to believe I mentally tricked myself into thinking the Mango input lag isn't as bad as it felt at the exact same second I tried a higher mouse DPI.
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Have a logitech G502. I did see your posts and tried the same thing, hoping for an improvement, still incredibly laggy though unfortunately. I also updated firmware to the latest version last night, no improvements that I could notice.

I contacted the seller (accessorieswhole) to initiate a refund. Hopefully goes smoothly. Probably wait at this point, try 4K again next year, unless I can find a UN40JU7500 for a decent price.
 
LanPirate1 said:
Notice anything different or better from the firmware update?
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Not a thing so far.


I did fix some of my other issues. I moved my desk a tad (mounted a shelf for the monitor) and that fixes the gradient tunnel I was getting.

Going to above 95% brightness fixed the faint scanlines-like moving top to bottom.

I noticed I was getting some blurry text on older apps (Task Scheduler), so I went into display settings. I guess Windows10 felt that my monitor needed 150% DPI. Adjusted and problem solved.

So of you're getting blurry text on older apps in Win10, check your DPI settings.

I did some more thorough tests and color accuracy was within 2% after calibration for the X-Rite swatches (most were under 1% deviation). Also tested MGSV at 1080P. Looked fine with all of the details turned up. Since it scales even (4:1) and not fractional (like 2.18:1, etc), it looks fine.

Also, FreeSync kicks ass. I didn't even realise what I was putting myself through. So much smoother now. I've always straddled the line between high fidelity and not playable. Being able to drop from 1440p (my last monitor) to 1080p and get the benefit of FreeSync is great.
 
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Spidey329 said:
Not a thing so far.


I did fix some of my other issues. I moved my desk a tad (mounted a shelf for the monitor) and that fixes the gradient tunnel I was getting.

Going to above 95% brightness fixed the faint scanlines-like moving top to bottom.

I noticed I was getting some blurry text on older apps (Task Scheduler), so I went into display settings. I guess Windows10 felt that my monitor needed 150% DPI. Adjusted and problem solved.

So of you're getting blurry text on older apps in Win10, check your DPI settings.

I did some more thorough tests and color accuracy was within 2% after calibration for the X-Rite swatches (most were under 1% deviation). Also tested MGSV at 1080P. Looked fine with all of the details turned up. Since it scales even (4:1) and not fractional (like 2.18:1, etc), it looks fine.

Also, FreeSync kicks ass. I didn't even realise what I was putting myself through. So much smoother now. I've always straddled the line between high fidelity and not playable. Being able to drop from 1440p (my last monitor) to 1080p and get the benefit of FreeSync is great.
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I had to bring my DPI down a notch also. I found 125 works best for me.
 
Can anyone recommend a good Amazon retailer that offers the UHD400 with a pixel-perfect guarantee? AccessoriesWholesale has gotten rave reviews in this thread, but I have a stack of Amazon gift cards I'd like to put towards this display.
 
Just out of curiosity how much more is the pixel perfect guarantee?
 
tuggernuts said:
Can anyone recommend a good Amazon retailer that offers the UHD400 with a pixel-perfect guarantee? AccessoriesWholesale has gotten rave reviews in this thread, but I have a stack of Amazon gift cards I'd like to put towards this display.
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I got mine from 7DaysDirect, although I did not get the pixel-perfect model. It looks like they also sell the pixel-perfect model on Amazon. Received mine in 2 days from South Korea. Insane shipping.
 
I didn't pay for pixel perfection and haven't noticed a single dead or stuck pixel.

In contrast, my HP 27" had one near the dead center of the screen. Drove me nuts.
 
Sir_David said:
I got mine from 7DaysDirect, although I did not get the pixel-perfect model. It looks like they also sell the pixel-perfect model on Amazon. Received mine in 2 days from South Korea. Insane shipping.
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Thanks - 7DaysDirect was one of the few vendors I found when searching, it's good to have confirmation from [h]ere that they're legit. Just placed an order - time to put my old LVM37-w3 out to stud. Long live large format displays!
 
Got my monitor a few days ago. I ordered my monitor on Tuesday morning and it arrived on Friday. I'm really enjoying it so far, with no major problems at all. I ordered it from accessorieswhole, and just got the normal, NON-pixel perfect version. Thankfully there are ZERO dead/stuck pixels as far as I am aware of. I could investigate really closely to make 100% sure there arent any, but I don't really want to, because if I do find out it has some, that won't be good for my OCD haha, even with them being totally unnoticeable in normal use.

The monitor arrived very well packaged and protected with heaps of bubble wrap. In one spot on the package though, the few layers of bubble wrap were all popped down to the box. But thankfully the screen was fine. There is still plenty of bubble wrap and foam inside the box as well.

The monitor feet were easy enough to attatch, although they are only attatched to the monitor by 3 screws each for each feet, onto to the back of the monitor, with nothing actually screwed into the bottom of the monitor. And the screws are pretty short. The monitor is quite light though, so it should be alright, but if the screws ever came loose, basically the monitor would do a faceplant onto the desk which is a bit worrying.

The monitor's colour arrived with a slight blue tinge as everyone has mentioned, but after changing the Brightness, Contrast, Saturation and Hue settings to the ones LanPirate1 shared on page 1, it looked much better. His colour temperatures he gave however were way off, giving it a very red tinge, so I kept it on 6500K, and it's looking pretty good. It may need some further calibration but seems accurate enough for now.

Windows automatically set the scaling to 150%, which looks pretty good. Things look like a similar size ratio to what they would on a 1080p screen I think, although some things seem a bit too big. I've been using this setting mostly, but some programs, like Steam and iTunes have a slight blur to them, both on the text and the images and album art, so I guess they aren't being scaled properly. After setting it to 100% scaling, everything looks nice and sharp, with text very small, but still very readable, it may become a bit annoying after a while though. I haven't tried 125% too much yet.

In Nvidia Control Panel I have the screen set to RGB, 10bit, Full dynamic range. If I chooseYCbCr444, the colour looks really dull and not as good, and only Limited dynamic range is available. I still get 4:4:4 with RGB anyway, so yeah.

I played some games and am surprised at how well my GTX 970 can run games in 4K. Obviously the settings will need to be lowered to Low or Medium on some of the higher demanding games though to get 60fps. For AAA games you may still not get good frame rates on Low though, and may need to play on 2560x1440.

I played some games in 1440p and was surprised at how good they looked. Somehow, even though it's not a resolution that is equally divisible into 4k, playing games in 1440p looked better than in 1080p. There is perhaps a slight blur, but nowhere near the blurry mess that 720p games looked on 1080p monitors. Plus the big screen and immersiveness is great and makes up for it.

I played some movies and admired the much greater contrast ratio and deeper blacks than my horrible 27" TN panel that I've been using for years. I look forward to watching movies and shows on this.

I connected my PS3 to it and played a Blu-ray, and that works well. If I bring up the OSD, it will tell me I'm running @24Hz as well, so I'm guessing this monitors gives you true 24fps without doing a 3:2 pulldown, which is good. I am not 100% sure about that though, and the difference between the two are negligible, at least to me. But if it does give true 24fps, that is just another good feature.

Two possible slight cons about this monitor is that when you have a lot of white on the screen, there appears to be some slight streaking through the white areas when viewing it on an angle (so the left and right of the screen when your head is in the middle of the screen. But when looking at it dead on, they disappear. Maybe it's nothing and is just the residue from the plastic screen protecting sheet though, not sure. Will investigate further. This isn't a big problem though.

The next thing is, when viewing a screen that is entirely black, there seems to be a patch of "not as black"/very dark grey on the bottom right corner. This might be a pretty common thing though. My TV even has this issue. Most of the time it wouldn't be a problem either.

Dunno what else to say. After using it some more I may share some further thoughts. I'm liking this monitor very much. I think I definitely made the right choice in buying it. :)

Here's some pics of my unboxing the other night.

IMG_20160715_170257.jpgIMG_20160715_201109.jpgIMG_20160715_201320.jpgIMG_20160715_201325.jpg IMG_20160715_201738.jpgIMG_20160715_201847.jpgIMG_20160715_204331.jpgIMG_20160715_210711.jpg
 
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WhopperMcZinger said:
Input lag seems pretty good. I don't notice much difference between this one (5ms) and my previous 27" TN monitor (2ms).
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Those measurements you're quoting are pixel response times, not input lag. Two totally different things...
 
WhopperMcZinger said:
Two possible slight cons about this monitor is that when you have a lot of white on the screen, there appears to be some slight streaking through the white areas when viewing it on an angle (so the left and right of the screen when your head is in the middle of the screen. But when looking at it dead on, they disappear. Maybe it's nothing and is just the residue from the plastic screen protecting sheet though, not sure. Will investigate further. This isn't a big problem though.
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I too notice a slight streaking when viewing at an angle with this monitor. My first thought was also some sort of residue left from the plastic sheet but I'm not entirely sure on this. Before I do anything I want to know the best possible way to clean this screen. I'm thinking a lint free cloth may do the trick.
 
Sir_David said:
Before I do anything I want to know the best possible way to clean this screen. I'm thinking a lint free cloth may do the trick.
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The usefulness of quality microfiber cannot be overstated. I get all mine from The Rag Company (google it - I don't want to post links with my low post count). Check out the glass section - I'm partial to the 12x12 suede and 6x7 knit lens cloths. I haven't tried the 'glass and window' specific cloths on sensitive stuff like a monitor.
 
Has anyone peeled away the plastic strip along the bottom of the monitor yet? The one with the red warning sticker. Because in one of the reviews on Amazon the guy said it says "you remove plastic, you cannot return".

I'm thinking of peeling off the strip up from the right and cutting it off just before the red sticker.
 
tuggernuts said:
The usefulness of quality microfiber cannot be overstated. I get all mine from The Rag Company (google it - I don't want to post links with my low post count). Check out the glass section - I'm partial to the 12x12 suede and 6x7 knit lens cloths. I haven't tried the 'glass and window' specific cloths on sensitive stuff like a monitor.
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I have a bunch of microfibre cloths for my eye glasses, but am still wary of using them on a brand new monitor heh.
 
What is the pixel size on this monitor? (I don't see it listed on the eBay adverts.) Also, can anyone here comment on this monitor for office work (spreadsheets) or photo editing?
 
Hi! Just receive monitor, but can't change resolution to 4k( At start monitor set up only 1920x1080@60hz( hdmi4 v1.4) and 1920x1200@60hz (hdmi1 v2.0) my graphic card is r5 230. Can i change manualy resolution at 4k and frequency to 30hz?
I will try DP tomorrow on other card radeon 7750.
 
WhopperMcZinger said:
I have a bunch of microfibre cloths for my eye glasses, but am still wary of using them on a brand new monitor heh.
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If it's clean, quality microfiber you're good to go. I wouldn't trust crappy logo-laden stuff you might find being given away at job fair tables etc. Clean is important - if it's dirty you're just dragging grit across your screen like sandpaper. Warm water, mild detergent, hand wash, air dry. I keep a cloth for monitor use only in my desk in a closable container so it doesn't gather dust or grit. Yes, I'm obsessive about this stuff - I detail cars and microfiber is obviously a key tool.

TBH, since this display uses a Samsung panel you can probably go find an English manual for one of their TVs and follow those cleaning instructions.
 
So yeah. I feel a bit of an idiot. Despite 4K60hz 4:4:4 displaying fine over the 15' DP cable I was using, apparently that's just too long. Connected with the included (super short) HDMI cable = no more input lag complaints.

Moral of the story; use short cables. Now I just need to rearrange my entire setup.. I guess.
 
Got mine a few hours ago and I already like it so much that I have peeled the plastic and angry red sticker off. Ordered a perfect pixel version from 7DaysDirect off of Amazon at about 1:30 AM EST on Saturday and I received it at 2:40 PM today. The package spent 36 consecutive hours in transit from Incheon to the east coast of the US - that is amazing to me.


Some objective notes about my particular display/experience:

Like the others, my example was very well packaged and arrived unscathed. There was evidence that the display had been removed from the box at some point which is what I want to see with a pixel-tested unit. The included cables seem to be of good quality but are pretty short, the user manual is completely worthless if you don't speak Korean, and the remote demonstrates that TV remotes are a universal language.

Build quality is acceptable - the unit feels solid and generally well designed. The only QC flaw I have found is a misaligned screw hole for the left stand leg that prevents me from using all 3 screws on that side. This doesn't seem to be much of an issue as the left side is still comparably sturdy to the right side, but the stand design overall is barely suitable for something this large. The display is very light but the geometry of the [completely fixed, non-adjustable] legs means that desk vibrations translate in to a bit of display shake. On the stand-related bright side, I was happy to see that the leg screws find homes in metal threads and aren't crappy self-tappers like those found on some cheaper models.

My unit arrived with an updated, Freesync-enabled firmware and English menus. As it was a 'perfect pixel' model, all 8,294,400 pixels are predictably working without issue. Overall I haven't observed any deal-breaking issues with the display, and by that I mean there are no dark/light areas, artifacts, or other things that cause issues no matter what is playing on the screen. The OSD is perfectly serviceable, though I really wish I had a way to learn what some of the various features are. Color Bypass, Picture Bypass, Noise Reduction, Super Resolution, and Response Time are all things that sound interesting but really need some explanation. Frustratingly and inexplicably, I can't seem to find a Backlight setting.


Now, on to more subjective things and my opinions on this display.

I feel that internet opinions are useless without context, so a bit of background. I game, but not competitively or even terribly seriously. I'm not an artist or a graphic designer. I have never used a high-end gaming monitor and my eyes have never seen 120/144hz in action. I have used a Westinghouse LVM-37w3 37" 1080p display as my sole monitor for roughly 9 years and it has served valiantly. I didn't want to upgrade from my Westy, I wanted to replace it because it was starting to wear out. Sadly, the large format PC displays environment in 2016 seems to be almost entirely a game of compromises as choose between all sorts of crap that you have to work around and/or just learn to live with.

So, with the above in mind, I can happily say that the UHD400 is so far a very, very good replacement for my treasured LVM. It just works. You get all the size and beauty of a high-quality 4k HDTV with, as far as I can tell with my filthy casual eyeballs, none of the drawbacks usually associated with a large-format display.

The panel itself is very responsive - it's fast enough that I have zero problems with ghosting in any situation that I have tried so far. The hardware sitting between the liquid crystals and my computer does a fine job of relaying the messages sent by the GPU and input lag is not something I notice whatsoever. I'm not claiming that there is no lag or ghosting, just that what is/may be there isn't enough to be an issue. If you're coming from a very high-end gaming monitor you may notice things that I cannot, but overall this just feels like an all-around good computer monitor blown up to nearly a nearly comical size and resolution.

Subjectively, the only nitpick I have is that I notice very fine, linear vertical patterns at the edges of my focus when viewing something with an all-white background, like Facebook. I think it may be the "streaking" thing Sir_David mentioned. It reminds me of the slightly grainy appearance that you commonly see on dusty workplace monitors. I wiped the screen down and confirmed that it isn't any sort of residue from the protective film. I do need to spend some time and calibrate this thing properly, and I suspect that this phenomenon may lessen or vanish once I get my brightness, contrast, and gamma under control. If it hangs around it's not something that truely bothers me.

In the end I'm very happy with this display. I have literally been waiting years for another no-compromises large-format monitor to come along and the UHD400 has delivered.
 
Hello All. Unlike all of you I am so far having a horrible experience with this product. I received the item and hooked it up to my pc using the included display port. I turned it on, no picture. I know it turn on but i see the light coming from the screen, however nothing I don't see any actual moving picture.. I'm even tried hitting the m button and s button on the control panel but no menu comes up. I brought it from the seller accessorieswhole like most of you. The seller did sent me a replacement board, i installed it but again no actual picture. Now for those that this product worked for is there any special thing you did to get it working. I'm really frustrated at this point but any help anyone can provide will be helpful.
 
Prettyp86 said:
Hello All. Unlike all of you I am so far having a horrible experience with this product. I received the item and hooked it up to my pc using the included display port. I turned it on, no picture. I know it turn on but i see the light coming from the screen, however nothing I don't see any actual moving picture.. I'm even tried hitting the m button and s button on the control panel but no menu comes up. I brought it from the seller accessorieswhole like most of you. The seller did sent me a replacement board, i installed it but again no actual picture. Now for those that this product worked for is there any special thing you did to get it working. I'm really frustrated at this point but any help anyone can provide will be helpful.
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Try an HDMI cable or a different DP cable with a different computer or other output device to confirm you need a replacement.
 
CCLMD said:
Try an HDMI cable or a different DP cable with a different computer or other output device to confirm you need a replacement.
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Tried different DP cables and i even tried using the hdmi cable but i can't actually see the menu to change the input. Even the remote doesn't seem to respond. Is there a way i can change the input or pull up the menu on the remote. It's a bit confusing.
 
Prettyp86 said:
Hello All. Unlike all of you I am so far having a horrible experience with this product. I received the item and hooked it up to my pc using the included display port. I turned it on, no picture. I know it turn on but i see the light coming from the screen, however nothing I don't see any actual moving picture.. I'm even tried hitting the m button and s button on the control panel but no menu comes up. I brought it from the seller accessorieswhole like most of you. The seller did sent me a replacement board, i installed it but again no actual picture. Now for those that this product worked for is there any special thing you did to get it working. I'm really frustrated at this point but any help anyone can provide will be helpful.
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Just return it. Mine worked perfect right out of the box. All I had to do was adjust the colors.
 
So does this one not have an adjustable backlight either? As in stuck at 100%? Tuggernuts post above seems to suggest this...

This is a disturbing trend lately. Seems like lots of the right-off-Ebay Korean monitors and TVs advertise flicker free backlighting, but come to find out it's because the backlight has no controller and is literally an on or off affair with no level adjustment. Even a PWM backlight at 100% is going to be flicker free...
 
NoxTek said:
So does this one not have an adjustable backlight either? As in stuck at 100%? Tuggernuts post above seems to suggest this...

This is a disturbing trend lately. Seems like lots of the right-off-Ebay Korean monitors and TVs advertise flicker free backlighting, but come to find out it's because the backlight has no controller and is literally an on or off affair with no level adjustment. Even a PWM backlight at 100% is going to be flicker free...
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I have my brightness at around 65% and I do not notice flicker at all. Maybe I am not as sensitive to it? Either way I can have it this low without any issues.
 
jmilcher said:
I have my brightness at around 65% and I do not notice flicker at all. Maybe I am not as sensitive to it? Either way I can have it this low without any issues.
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Brightness and backlight control are two different things.

The 'Brightness' control is just another picture adjustment and affects how the logic presents the image for display, basically adjusting how much light is allowed through the sub pixels on a pixel per pixel basis. Whereas a typical backlight level adjustment will control the output level of the backlight (the light behind or on the edges of an LCD panel), completely independent of what's being displayed on the screen or of any brightness / contrast adjustment. That adjustment is usually done through PWM (pulse width modulation, pulsing the light on and off rapidly in varying durations to trick the eeye into perceiving less light output) or on a more expensive unit through an actual DC level adjustment - varying the DC voltage sent to the LED backlight thereby truly varying brightness. Some of the newer TVs and monitors that advertise 'flicker free' backlighting have a PWM backlight controller that pulses at such a high frequency that flicker is practically imperceptible.

Well that was a mouthfull... but don't confuse brightness for backlight level adjustment. :)
 
NoxTek said:
Brightness and backlight control are two different things.

The 'Brightness' control is just another picture adjustment and affects how the logic presents the image for display, basically adjusting how much light is allowed through the sub pixels on a pixel per pixel basis. Whereas a typical backlight level adjustment will control the output level of the backlight (the light behind or on the edges of an LCD panel), completely independent of what's being displayed on the screen or of any brightness / contrast adjustment. That adjustment is usually done through PWM (pulse width modulation, pulsing the light on and off rapidly in varying durations to trick the eeye into perceiving less light output) or on a more expensive unit through an actual DC level adjustment - varying the DC voltage sent to the LED backlight thereby truly varying brightness. Some of the newer TVs and monitors that advertise 'flicker free' backlighting have a PWM backlight controller that pulses at such a high frequency that flicker is practically imperceptible.

Well that was a mouthfull... but don't confuse brightness for backlight level adjustment. :)
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Many reviews have stated this is in fact a PWM display, but the frequency is very high and not noticeable by most users. I was fully aware of how the technology works, but someone else may find that paragraph useful in the future.
 
jmilcher said:
Just return it. Mine worked perfect right out of the box. All I had to do was adjust the colors.
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Yeah I am planning to. The seller did provide me with a new display board but that didn't work. THought it may have been user error. I just will return it.
 
Does anyone else get bad screen tearing when playing videos in VLC player?

Not a biggie though, since I have since changed to MPC-HC which is for the most part tear-free. It also seems to be much better at upscaling video, and has less jagged edges, Just wondering if it happens to anyone else.
 
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