- Jun 26, 2007
- 1,136
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A friend of mine got a very good deal on a Samsung P2770HD 27 LCD TV monitor. He will be using it both as a TV and as his primary PC monitor. However when we tried to connect it to his PC we run into all shorts of trouble.
In our first attempt we used a 3 meter HDMI 1.3b good quality gold plated cable. The result was not what we anticipated. The picture was kind of jaggy and underscan was present. Adjusting underscan from within ATIs ccc improved things but we never succeeded in getting around the problem completely. Along with using the monitors built-in fit to screen function we got somewhere in terms of screen coverage but picture quality remained awful.
For our second attempt we used the 1.5 meter VGA cable that came along with the monitor along with a 1.8 meter extension (we need a cable of at least 2.5 meters long). The result was too much noise. Removing the extension improved things a lot and a good quality 3-meter cable will probably do the trick but this is our last option.
Here is where things got a bit weird. My friend was using a shielded gold plated 5-meter DVI-D dual link cable with his old monitor (EIZO L565) without any problems. Using this cable resulted in sparkling blue dots all over the screen. The dots appear mostly in dark, grey and blueish areas. Changing wallpapers proved just that. Here is a screenshot depicting the problem courtesy of some other unlucky chap -> http://i28.tinypic.com/rwmmhf.jpg).
Reducing color depth to 16bit made the dots disappear. Google returned quite a few hits when searching for the sparkling blue dots with some people talking about inherent panel flaws. However when we tried a single link 1.8 meter DVI-D cable picture was flawless. Even after hours of heavy use everything was ok.
Currently we have 2 DVI-D cables on order. These should arrive tomorrow evening but the big question is, even if the monitor works ok with a new cable, should we RMA it or not?
Any ideas/suggestions?
All tests were made at the monitors native resolution (1920x1080@60) with ATis latest Catalyst drivers (11.1). Graphics board is a brand-new ASUS HD6870 1GB. OS is win7 64 Home Premium. Everything is connected to an APC SmartUPS 1000VA.
*** update ***
A new 3-meter DVI-D dual link cable did the trick. No blue dots, just perfect picture.
In our first attempt we used a 3 meter HDMI 1.3b good quality gold plated cable. The result was not what we anticipated. The picture was kind of jaggy and underscan was present. Adjusting underscan from within ATIs ccc improved things but we never succeeded in getting around the problem completely. Along with using the monitors built-in fit to screen function we got somewhere in terms of screen coverage but picture quality remained awful.
For our second attempt we used the 1.5 meter VGA cable that came along with the monitor along with a 1.8 meter extension (we need a cable of at least 2.5 meters long). The result was too much noise. Removing the extension improved things a lot and a good quality 3-meter cable will probably do the trick but this is our last option.
Here is where things got a bit weird. My friend was using a shielded gold plated 5-meter DVI-D dual link cable with his old monitor (EIZO L565) without any problems. Using this cable resulted in sparkling blue dots all over the screen. The dots appear mostly in dark, grey and blueish areas. Changing wallpapers proved just that. Here is a screenshot depicting the problem courtesy of some other unlucky chap -> http://i28.tinypic.com/rwmmhf.jpg).
Reducing color depth to 16bit made the dots disappear. Google returned quite a few hits when searching for the sparkling blue dots with some people talking about inherent panel flaws. However when we tried a single link 1.8 meter DVI-D cable picture was flawless. Even after hours of heavy use everything was ok.
Currently we have 2 DVI-D cables on order. These should arrive tomorrow evening but the big question is, even if the monitor works ok with a new cable, should we RMA it or not?
Any ideas/suggestions?
All tests were made at the monitors native resolution (1920x1080@60) with ATis latest Catalyst drivers (11.1). Graphics board is a brand-new ASUS HD6870 1GB. OS is win7 64 Home Premium. Everything is connected to an APC SmartUPS 1000VA.
*** update ***
A new 3-meter DVI-D dual link cable did the trick. No blue dots, just perfect picture.
Last edited:
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