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Just to chime in, the Sony KDL55BX520 does 4:4:4 over HDMI using Game or Graphics "Scene" modes. Verified with the test images.


Also supports HDMI audio at the same time as well.


Using this TV with my Mac Mini, which is connected to my Yamaha Receiver (HDMI to HDMI) which is then connected to my TV.


Getting 5.1 audio through VLC and PC games.


Cheers!
 

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I've made an extensive amount of posts recently over at [H]ard|Forum about the iSymphony LC32iF90 but, I wanted to share a condensed version here. Please make sure to add it to the avoid at all cost list.



I recently picked this TV up from Conn's for $279.99. Unfortunately, once I hooked it up to multiple PCs, I found out the native resolution is 1280x720p. This is in direct conflict with the box and specifications that the native resolution is 1920x1080p. Yes, it's true that you can tell Windows or the video card driver to change the resolution to 1920x1080p. However, you shouldn't have to do so and, any resolution over 1280x720p will force the TV to overscan which will cut off a great deal of the picture including your entire taskbar. The only way to correct the overscan is to use your graphics card's underscan feature which will result in it running at a lower resolution than 1920x1080p or whatever you set it to. There is no option in the TV settings to switch to a 1:1 pixel mapping as you can only change the TV to "wide (16:9) or "normal" (4:3).


In addition to this, text on the PC was multicoloured in any progressive scan resolution higher than 1280x720p. All interlaced resolutions above 1280x720p removed the multicoloured text issue but, they created a flicker when you would open/close programs or use a scroll bar. This TV also failed 4:4:4 chroma colour tests. It's not advertised as having 4:4:4 chroma but, it is crucial that a display being used as a PC monitor is able to run in the 4:4:4 chroma profile.


All of these problems existed over VGA to VGA (this will not go higher than 1280x720p), DVI to VGA, DVI to HDMI, and HDMI to HDMI signals. I tired multiple solutions and researched this issue extensively over the short period that I owned this TV. This is not an issue with the video card driver nor is it an issue with the monitor driver Windows installs as I tried multiple custom drivers and edits to them. It is an issue with the EDID which is contained inside the TV's hardware which broadcasts all the hardware information to your operating system. It states the following:

Quote:
Monitor Asset Manager Report, generated 2/2/2012

Copyright (c) 1995-2011, EnTech Taiwan.

---------------------------


Monitor #1 [Real-time 0x0041]

Model name............... MTC26T42

Manufacturer............. Mitac

Plug and Play ID......... MTC0B01

Serial number............ 1001

Manufacture date......... 2008, ISO week 1

Filter driver............ None

-------------------------

EDID revision............ 1.3

Input signal type........ Digital

Color bit depth.......... Undefined

Display type............. RGB color

Screen size.............. 700 x 390 mm (31.5 in)

Power management......... Not supported

Extension blocs.......... 1 (CEA-EXT)

-------------------------

DDC/CI................... Not supported


Color characteristics

Default color space...... Non-sRGB

Display gamma............ 2.20

Red chromaticity......... Rx 0.652 - Ry 0.333

Green chromaticity....... Gx 0.275 - Gy 0.595

Blue chromaticity........ Bx 0.143 - By 0.063

White point (default).... Wx 0.285 - Wy 0.293

Additional descriptors... None


Timing characteristics

Horizontal scan range.... 14-91kHz

Vertical scan range...... 22-80Hz

Video bandwidth.......... 160MHz

CVT standard............. Not supported

GTF standard............. Not supported

Additional descriptors... None

Preferred timing......... Yes

Native/preferred timing.. 1280x720p at 60Hz (16:9)

Modeline............... "1280x720" 74.250 1280 1390 1430 1650 720 725 730 750 +hsync +vsync

Detailed timing #1....... 1920x1080i at 60Hz (16:9)

Modeline............... "1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1094 1124 interlace +hsync +vsync


Standard timings supported

800 x 600p at 60Hz - VESA

1024 x 768p at 60Hz - VESA


EIA/CEA-861 Information

Revision number.......... 3

IT underscan............. Not supported

Basic audio.............. Supported

YCbCr 4:4:4.............. Supported

YCbCr 4:2:2.............. Supported

Native formats........... 2

Detailed timing #1....... 720x480p at 60Hz (16:9)

Modeline............... "720x480" 27.030 720 736 798 858 480 489 495 525 -hsync -vsync

Detailed timing #2....... 1280x720p at 50Hz (16:9)

Modeline............... "1280x720" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync

Detailed timing #3....... 1920x1080i at 50Hz (16:9)

Modeline............... "1920x1080" 74.250 1920 2448 2492 2640 1080 1084 1094 1124 interlace +hsync +vsync

Detailed timing #4....... 720x576p at 50Hz (16:9)

Modeline............... "720x576" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync

Detailed timing #5....... 720x480p at 60Hz (16:9)

Modeline............... "720x480" 27.000 720 736 798 858 480 489 495 525 -hsync -vsync


CE video identifiers (VICs) - timing/formats supported

720 x 480p at 60Hz - EDTV (16:9, 32:27)

1280 x 720p at 60Hz - HDTV (16:9, 1:1) [Native]

1920 x 1080i at 60Hz - HDTV (16:9, 1:1)

720 x 480i at 60Hz - Doublescan (16:9, 32:27)

1920 x 1080p at 60Hz - HDTV (16:9, 1:1)

720 x 576p at 50Hz - EDTV (16:9, 64:45)

1280 x 720p at 50Hz - HDTV (16:9, 1:1) [Native]

1920 x 1080i at 50Hz - HDTV (16:9, 1:1)

720 x 576i at 50Hz - Doublescan (16:9, 64:45)

1920 x 1080p at 50Hz - HDTV (16:9, 1:1)

1920 x 1080p at 24Hz - HDTV (16:9, 1:1)

1920 x 1080p at 25Hz - HDTV (16:9, 1:1)

1920 x 1080p at 30Hz - HDTV (16:9, 1:1)

NB: NTSC refresh rate = (Hz*1000)/1001


CE audio data (formats supported)

LPCM 2-channel, 16/20/24 bit depths at 32/44/48/88/96/176/192 kHz


CE speaker allocation data

Channel configuration.... 2.0

Front left/right......... Yes

Front LFE................ No

Front center............. No

Rear left/right.......... No

Rear center.............. No

Front left/right center.. No

Rear left/right center... No

Rear LFE................. No


CE vendor specific data (VSDB)

IEEE registration number. 0x000C03

CEC physical address..... 1.0.0.0

Supports AI (ACP, ISRC).. Yes

Supports 48bpp........... No

Supports 36bpp........... No

Supports 30bpp........... Yes

Supports YCbCr 4:4:4..... Yes

Supports dual-link DVI... No

Maximum TMDS clock....... 205MHz


Report information

Date generated........... 2/2/2012

Software revision........ 2.60.0.972

Data source.............. Real-time 0x0041

Operating system......... 6.1.7601.2.Service Pack 1


Raw data

00,FF,FF,FF,FF,FF,FF,00,36,83,01,0B,E9,03,00,00,01,12,01,03, 80,46,27,78,0A,19,90,A7,55,46,98,24,

10,49,4B,01,08,00,01,01,01,01,01,01,01,01,01,01,01,01,01,01, 01,01,01,1D,00,72,51,D0,1E,20,6E,28,

55,00,C4,8E,21,00,00,1E,01,1D,80,18,71,1C,16,20,58,2C,25,00, C4,8E,21,00,00,9E,00,00,00,FC,00,4D,

54,43,32,36,54,34,32,0A,20,20,20,20,00,00,00,FD,00,16,50,0E, 5B,10,00,0A,20,20,20,20,20,20,01,9A,

02,03,22,72,4D,03,84,05,07,10,12,93,14,16,1F,20,21,22,23,09, 7F,07,83,01,00,00,67,03,0C,00,10,00,

98,29,8F,0A,D0,8A,20,E0,2D,10,10,3E,96,00,C4,8E,21,00,00,18, 01,1D,00,BC,52,D0,1E,20,B8,28,55,40,

C4,8E,21,00,00,1E,01,1D,80,D0,72,1C,16,20,10,2C,25,80,C4,8E, 21,00,00,9E,8C,0A,D0,90,20,40,31,20,

0C,40,55,00,C4,8E,21,00,00,18,8C,0A,D0,8A,20,E0,2D,10,10,3E, 96,00,C4,8E,21,00,00,18,00,00,00,37


---------------------------


Hardware data

BUS_SLOT = PCI00000.PCI00004.PCI00008.PCI0000C.PCI00010.PCI00014.PCI000 18.PCI0001C

00000000 = 01048086.20900006.06000009.00000000.00000000.00000000.000000 00.00000000

00000010 = 01168086.00900407.03000009.00000000.F7800004.00000000.E00000 0C.00000000

000000B0 = 1C3A8086.00100006.07800004.00800000.F7F0A004.00000000.000000 00.00000000

000000D0 = 1C2D8086.02900006.0C032004.00000000.F7F08000.00000000.000000 00.00000000

000000D8 = 1C208086.00100006.04030004.00000010.F7F00004.00000000.000000 00.00000000

000000E0 = 1C108086.00100007.060400B4.00810010.00000000.00000000.000202 00.0000E0E0

000000E8 = 1C268086.02900006.0C032004.00000000.F7F07000.00000000.000000 00.00000000

000000F8 = 1C498086.02100007.06010004.00800000.00000000.00000000.000000 00.00000000

000000FA = 1C038086.02B00007.01060104.00000000.0000F0B1.0000F0A1.0000F0 91.0000F081

000000FB = 1C228086.02800003.0C050004.00000000.F7F05004.00000000.000000 00.00000000

00000200 = 816810EC.00100407.02000006.00000010.0000E001.00000000.F00040 0C.00000000

00000300 = 08858086.00100406.02800067.00000010.F7E00004.00000000.000000 00.00000000

00000600 = 01941033.00100406.0C033004.00000010.F7C00004.00000000.000000 00.00000000

--------

01040000 = 00FFFFFF.FFFFFF00.3683010B.E9030000.01120103.80462778.0A1990 A7.55469824

00000020 = 10494B01.08000101.01010101.01010101.01010101.0101011D.007251 D0.1E206E28

00000040 = 5500C48E.2100001E.011D8018.711C1620.582C2500.C48E2100.009E00 00.00FC004D

00000060 = 54433236.5434320A.20202020.000000FD.0016500E.5B10000A.202020 20.2020019A

01040100 = 02032272.4D038405.07101293.14161F20.21222309.7F078301.000067 03.0C001000

00000020 = 98298F0A.D08A20E0.2D10103E.9600C48E.21000018.011D00BC.52D01E 20.B8285540

00000040 = C48E2100.001E011D.80D0721C.1620102C.2580C48E.2100009E.8C0AD0 90.20403120

00000060 = 0C405500.C48E2100.00188C0A.D08A20E0.2D10103E.9600C48E.210000 18.00000037

I called the manufacturer after I called their parent company to get their number (800-710-7740) as their technical support line sends you directly to voicemail. I was hoping they could clear this matter up or provide a possible solution. Instead I was told that there is nothing they could do because, it "wasn't their TV". They didn't even understand the importance of the native resolution until after I explained it in detail. Even then I was told there was nothing that they could do because, they "didn't manufacture it". Once I told them that other TVs sold with a native resolution on 1920x1080p do not have this problem, I was told I couldn't "compare TVs to one another as they have different components". My response was that yes you could compare TVs as that is how comparative shopping works. Even if you ignored competitive shopping, there is still the issue that this TV is being sold as having a native resolution of 1920x1080p. When something is advertised as having a native resolution of 1920x1080p it has to actually have that as the native resolution on all of its input channels. This is an industry standard and all manufacturers are bound to it.


Even if you do not plan on using this TV for computer use, I advise you to not purchase it as you will not be getting what you payed for since the native resolution is 1280x720p and it is being falsely marketed as 1920x1080p by iSymphony. In addition to that the manufacturer refused to take any responsibility for the issue so they are far from reputable or trustworthy.


I would also like to point out that the TV is incredibly slow to respond to the remote control. Switching to a different input is also very slow and, you have to sit through an incredibly bright and painful "loading screen" that is white and then a very pale lavender every time you switch to a different input. To stress how bright this screen is, picture your contrast, brightness, and the backlight as high as they can possibly go. After the TV has successfully switched to another input, you can watch it "re-process" the image several times as the colour, contrast, and brightness will all change considerably multiple times. There is no way to turn this processing or any other processing off except for the cable clear one which does nothing. There is also no way to adjust the hue (R/G/B) which is the white balance and the TV's menu is incredibly limited as it is missing basic functions like a backlight adjustment. There is also no way to adjust sharpness over a VGA signal and that signal is in dire need of having it sharpness reduced.



I know the reviews here at Amazon speak very highly of this TV but, I suspect they haven't figured out that it is actually a 1280x720p native resolution TV. The one I purchased also had light bleed in the corners, cross talk during a viewing angle shift, and some minor clouding. The image also "washed out" very rapidly from a minor viewing angle shift and even looking at the TV in the center would leave the sides a bit "washed out". The colours and back levels were actually fairly nice but, you had to have the black levels a little gray or there is an excessive amount of "black crush" that will take place. However, the gamma is also incredibly high and, there is no way to get it at the correct level without introducing "black crush" and losing a lot of the colours on the lower end of the spectrum.


Again, I seriously urge anyone thinking of picking this set up to strongly reconsider doing so especially at it's typical price point of $349.99 as there are much higher quality TVs that are actually what the claim they are in this price range. I only payed $279.99 for it and, it was incredibly sub-par for even that price. I had high hopes for this TV based on the reviews (at another site) and specifications but sadly, it failed to meet any of those.


Conn's however made the return hassle free and even tried to find a comparable model or something that they could adjust the price on. Unfortunately there just wasn't anything available at this time. They may have "lost the sale" but, I would certainly shop with them again.



I decided to take pictures of the failed 4:4:4 tests and of a pitch black scene of video playback. I didn't take images of the multi coloured text because you can all picture what that looks like even if you have never seen it. Please forgive the crappy quality as the camera just refused to focus despite being in macro mode. You may not be able to see the light bleed image unless you shift your viewing angle and/or mess with your brightness/contrast. Just let me know if there is an issue viewing it.


4:4:4 test (1920x1080p) DVI cable (male to male) to HDMI adapter (female DVI to male HDMI)





4:4:4 test (1920x1080i) DVI cable (male to male) to HDMI adapter (female DVI to male HDMI)





The light bleed. Please note the light I see isn't blue (like it was on the camera) but, this was the best I could mimic it. I also want to point out that the area on the bottom left isn't really there. That's a result of the screen "wash out" from the angle shift. Likewise, a most of the lower right corner is also washout and not actually light bleed. If you move your eye level to either of those corners or their vertical sides, that area will darken. of course when you do this the middle of the screen will lighten (which is why I think this might be cross talk). The image also didn't show the light bleed in the top left corner but, it's almost identical to the light bleed in the top right corner. Speaking of the top right corner, it's a bit more "intense" than the picture would lead you to believe. This image was also taken with the brightness turned down much lower than it normally would be so that the bleed could be seen clearly without the actual movie "darkness" affecting it.

 

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i've also been posting on [H], hoping someone can confirm my Samsung UN32D5500 is either passing or failing the belle-nuit test. pics taken with a low-quality camera.


UN32D5500 HDMI-HDMI (relabeled to PC), HDMI black level set to 'Normal':



it looks like the adjacent sub-pixels are dimly lit. this could be due in part to the low-quality camera but i'm not sure of that. based on the pic above is this considered failing or passing the test? all text looks equally clear to me whether it be black text on white background, red text on black background etc.


UN32D5500 HDMI-HDMI (relabeled to PC), HDMI black level set to 'Low' which crushes blacks:



looks like it passes but the blacks are being crushed based on some other non-formal testing. for reference the quick and dirty method which passes when the input is relabeled to PC:


UN32D5500 via HDMI relabled to PC:



UN32D5500 via HDMI not relabled:



edit: also does it make a difference that my subpixel layout is BGR instead of the typical RGB?
 

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Discussion Starter #104
Hi Porter. Since you're from [h], I guess you already saw the discussion from Ryz about the black level low setting / black crush / pseudo 4:4:4. I don't think there was ever a definitive answer that came out of it though.


Still, even if there is black crush, how's the severity of it? You can try lagom's black level test to see how bad it is -- link . If it isn't too bad, I wouldn't worry about it too much, since your magenta result looks perfect.


And subpixel layout doesn't matter.
 

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Quote:
Originally Posted by thepoohcontinuum /forum/post/21607665


Hi Porter. Since you're from [h], I guess you already saw the discussion from Ryz about the black level low setting / black crush / pseudo 4:4:4. I don't think there was ever a definitive answer that came out of it though.


Still, even if there is black crush, how's the severity of it? You can try lagom's black level test to see how bad it is -- link . If it isn't too bad, I wouldn't worry about it too much, since your magenta result looks perfect.


And subpixel layout doesn't matter.

yeah i saw Ryz's posts. the black crush is bad with HDMI black level set to Low.


Normal: boxes 2-255 are clearly visible

Low: boxes 1-15 are indistinguishable from the background, only boxes 20-255 are visible


no change in text clarity, text looks equally clear from one to the other. in the photo i posted above with it set to Normal, is that technically failing the test? i'm partially confused on what constitutes failing. for example can you explain what i should look for in Colmino's pic of his RCA 40LA45RQ which passes? there's clearly other columns of pixels dimly lit, not sure if that's along the same lines of my pic.
 

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Discussion Starter #106

Quote:
Originally Posted by Porter_ /forum/post/21607804


yeah i saw Ryz's posts. the black crush is bad with HDMI black level set to Low.


Normal: boxes 2-255 are clearly visible

Low: boxes 1-15 are indistinguishable from the background, only boxes 20-255 are visible


no change in text clarity, text looks equally clear from one to the other. in the photo i posted above with it set to Normal, is that technically failing the test? i'm partially confused on what constitutes failing. for example can you explain what i should look for in Colmino's pic of his RCA 40LA45RQ which passes? there's clearly other columns of pixels dimly lit, not sure if that's along the same lines of my pic.

From Colmino's pic, the RCA does not pass 444. To the right of the bright red subpixels, you can see faded red subpixels.


When comparing your 'black level normal' pic with Ryz's results, it seems your blue subpixel is lit, whereas in Ryz's case his green subpixel is lit. What happens if you bump the test pic by one pixel vertically? Is the subpixel still blue or is it now green?


Also, there also seems to be a chroma anomaly where the red columns meet the blue columns -- where all subpixels are lit even though only the red subpixel should be lit. From my LD450 (link) and my laptop monitor, I don't see that anomaly.


And I don't know if its because of the quality of the pic, but the D550 / Samsung SQ04 panel seems to have an odd subpixel layout. It looks like each pixel is made up of 1 blue subpixel, 1 green subpixel, and 2 red subpixels... so it looks something like:


BR

GR


I need to check out some of those panel engineering spec sheets that Sjetski linked somewhere.
 

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Quote:
Originally Posted by thepoohcontinuum /forum/post/21608274


What happens if you bump the test pic by one pixel vertically? Is the subpixel still blue or is it now green?

how do i go about doing that? while connected via HDMI i have no screen adjustment option, they're only available when connected through VGA.
 

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Samsung UE40D5000 supports 4:4:4 if input is labeled as PC or DVI PC on HDMI1 Port. Sound does not work.




However Sound works if you use another label for your hdmi port (like GAME, AV-RECEIVER, ....), but 4:4:4 wont work anymore.

Sound tested via Displayport-> HDMI Adapter on thinkpad x220.


Furthermore, delay time (input lag) is quite low. 30ms lower than my laptop LCD and my BenQ G2420HD. Pretty nice!





edit: sorry for bad picture quality (handy made). HA!
 

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Quote:
Originally Posted by RunswithAliens /forum/post/21630875


Can anyone confirm or deny whether all versions of the LG LK450 tvs support 4:4:4, or is it just the S-IPS panels?

The next quote is Josh's response to another person who asked about the two VA panel LK450's he owns:
Quote:
Originally Posted by JoshZH /forum/post/21441705


I had two of them(32" and 42"), both passed 4:4:4 after i applied the famous EDID override fix.

Apparently both the S-IPS and VA panel types for the LK450 support 4:4:4.


Link to his post: http://www.avsforum.com/avs-vb/showt...5#post21441705
 

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Quote:
Originally Posted by sodaboy581 /forum/post/21568958


Just to chime in, the Sony KDL55BX520 does 4:4:4 over HDMI using Game or Graphics "Scene" modes. Verified with the test images.


Also supports HDMI audio at the same time as well.


Using this TV with my Mac Mini, which is connected to my Yamaha Receiver (HDMI to HDMI) which is then connected to my TV.


Getting 5.1 audio through VLC and PC games.


Cheers!

This is the only post so far that indicates 4:4:4 using HDMI to HDMI with audio. Furthermore the BX520 is a good performer testwise for a 60 Hz model. So, what's the catch? Is it lag, viewing angle, or what?
 

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Quote:
Originally Posted by drogulus /forum/post/21633942


This is the only post so far that indicates 4:4:4 using HDMI to HDMI with audio. Furthermore the BX520 is a good performer testwise for a 60 Hz model. So, what's the catch? Is it lag, viewing angle, or what?

Actually, there's other TVs (by Samsung and Sony as referenced in the second post of this thread) that do 4:4:4 HDMI to HDMI with audio as well.


The catch on the BX520 I had was the black levels weren't that good, due to the panel being S-IPS.


I now have a KDL55NX720, but I returned my Mac Mini to Best Buy so I can't test 4:4:4 via HDMI on this new TV at the moment. I will be able to test it soon, though.
 

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though this thread is populated with consumer displays, neither pro displays always support full chroma, as is the case with my 47LF20 Panny.

Recently needed to use for small text, we realized RED and BLUE channels are subsampled, whereas GREEN comes out sharp.

Connection: DVI to DVI driven by nvidia gfx, no scaling options.

Some samples:

http://s16.postimage.org/69tkgg5d1/DSC_5932.jpg
http://s7.postimage.org/j0zxho7ff/image.jpg
http://s17.postimage.org/hbi41f1nz/image.jpg

online text test:

B
http://s7.postimage.org/ciboihkm3/image.jpg

G
http://s18.postimage.org/opz6526nt/image.jpg

R
http://s7.postimage.org/gfyy7w7ff/image.jpg

W
http://s18.postimage.org/bps0md9h5/image.jpg


Magenta text:
http://s13.postimage.org/c5qpvgv7r/0...a_1280x881.jpg

Blue text
http://s9.postimage.org/rgwce6uq7/00...e_1280x881.jpg

Green/Red text
http://s9.postimage.org/vejm3lhjj/0002_G_R_1280x881.jpg


Any suggestion for workaround or hack into SM is more than welcome.
 

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Hi guys, I am not so into this issue but I bought a Pana 42gt30 Plasma Last week and found out that red Text looks a bit corrupted. I found out that the the Panel doesn't Support 4:4:4 or better 4:4:4 is being subsampled. Is there any Way for the me to get a Crystal clear Image from my computer by tweaking the driver changing the cable or is everything worthless with this Screen? Exept of this issue i Love this Screen.


Sry for the capitalised ones, my IPhone is freakin out.

Thanks in advance.
 

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Panasonic does not support full chroma in their 2011 consumer plasma series. Only in the LCD range or the upcoming GT & VT 50 series (pure color). No workaround
 

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Quote:
Originally Posted by evan_fotis /forum/post/21658770


though this thread is populated with consumer displays, neither pro displays always support full chroma, as is the case with my 47LF20 Panny.

You should complain at the better business bureau (if there is one in USA), the LF-20 is marketed as a display for use with computers, not a TV, and should be able to display a desktop in full 4:4:4.
 

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Quote:
Originally Posted by Lord Humongous /forum/post/21685550


You should complain at the better business bureau (if there is one in USA), the LF-20 is marketed as a display for use with computers, not a TV, and should be able to display a desktop in full 4:4:4.

...unfortunately i'm not in the US. Based in Greece, though this unit was purchased and shipped from Germany, complicating matters even more. Panasonic Europe has not even replied to a few mails I sent them, and the local tech department say, first, I'm only covered by Panasonic DE, then that they do not know what this might be, defective panel etc, heard some stories that Green pixels are placed on top, then the blue one and last the Red ones, that is why they come out blurry(!!) and that I should not look at it that close these displays are made to be viewed by a distance.. Hopefully a firmware update or hack can fix this though no high hopes here..
 

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Quote:
Originally Posted by Nevcairiel /forum/post/21392561


DVI actually supports audio just fine, most adapters just dont connect those pins, and most devices dont support it when receiving a DVI connection. HDMI is technically only DVI with a different connector (at least for most features, HDMI adds a few new ones)

Audio is not part of the original DVI spec......hence why it cannot handle audio.....
 
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