New TFT Monitor

  Matt45 19:04 27 Oct 2004
Locked

I ordered a CTX Flat Screen TFT Monitor from eBuyer and it arrived this morning - a day early. However, when I switched it on, I discovered there was one small dot which is always black very close to the edge of the screen. I believe that this is called a "dead pixel" Is there anything I can do to fix this or does it need returning?

  accord 19:21 27 Oct 2004

I think CXT do offer a 100% guarantee that there TFTs will have no dead pixels. Im sure some one on here will confirm this.

Im on my second TFT, iiyama and now LG and both have been DP free.

  paul32000 19:28 27 Oct 2004

I don't know about CTX, but usually manufacturers say that unless the monitor has a large number of dead or broken pixels, you cannot return it :(

By large I mean over 10 sometimes!!

  Dorsai 19:41 27 Oct 2004

To protect the end user and regulate a reasonable defective pixel rate in a
LCD display for panel manufacturers, ISO has created a standard for LCD
display manufacturers to follow. The specification determined four fault
classes of LCD displays, with each have a certain number of pixels faults
allowed. (See Table 1). Class I, LCD displays are considered "perfect"
allowing zero pixel or sub pixel faults. However, this standard has been
viewed as virtually IMPOSSIBLE or much too expensive. Class II, which allows
for five pixel or sub-pixel faults, has been an extremely difficult standard
for panel manufacturers to achieve in mass production. This groundbreaking
achievement is a major breakthrough in the visual display industry and has
set for others to follow. Consumers should be aware, that Class II displays
have been certified according to manufacturing standards.

Table 1. Definition of ISO 13406-2 Fault Classes

Maximum number of faults per type per million pixels

Failure Class Type 1 Type 2 Type 3
Class I 0 0 0
Class II 2 2 5
Class III 5 15 50
Class IV 50 150 500

Failure Type 1 Fully luminous (color white)
Failure Type 2 Not fully luminous (color black)
Failure Type 3 e.g. defective sub-pixel ( color red, green, blue )




* One Pixel of a LCD consists of three sub pixels in the color red, green, and blue.

  Dorsai 19:50 27 Oct 2004

I don't know if this is uk relevent, but the ISO standard is (as above)

  Dorsai 19:54 27 Oct 2004

Formatting error, with the failure classes,

Failure Class Type 1 Type 2 Type 3

Class I 0 0 0

Class II 2 2 5

Class III 5 15 50

Class IV 50 150 500

Failure Type 1 Fully luminous (color white)

Failure Type 2 Not fully luminous (color black)

Failure Type 3 e.g. defective sub-pixel ( color red, green, blue )

Forgot to add hit return as required.

  961 19:59 27 Oct 2004

try massaging GENTLY with a soft warm cloth around the pixel

However some CTX machines have a no dead pixel warranty

If yours is one of these contact retailer/manufacturer

  accord 21:04 27 Oct 2004

extract from CTX Europe website click here

CTX offers zero dead pixel guarantee on entry-level range of monitors

latest LCD models reinforce commitment to quality

CTX, the display specialist, has added to its S-series range of 15", 17" and 19" LCD monitors two new models that feature a unique zero dead pixel warranty*.

By guaranteeing no dead pixels on the 17" S762G+ and 19" S962G+, CTX is delivering picture perfect quality.

Available in silver, the 17" S762G+ includes DVI connection for a better quality picture, side-to-side and top-to-bottom viewing angles of 160 degrees and a contrast ratio of 450:1. In addition, it features a screen brightness of 260 cd/m 2, SXGA resolution, a response time of 25ms and built-in speakers.

Also designed in silver, the 19" S962G+ boasts an extremely high contrast ratio of 700:1, slim 17mm bezel, DVI connection, screen brightness of 250cd/m 2 and built-in speakers. It offers a side-to-side and top-to-bottom viewing angle of 170 degrees, complies with VESA wall mounting standards and is ISO13406-2 and TCO’99 certified.

S762G+ and S962G+ come with a 101-day guarantee to guard against the possibility of any dead pixels or sub-pixels. After this period it is subject to the ISO13406-2 standard for pixel faults

*S762G+ and S962G+ come with a 101-day guarantee to guard against the possibility of any dead pixels or sub-pixels. After this period it is subject to the ISO13406-2 standard for pixel faults.
“Due to the popularity of the entry-level S-series of LCD monitors, we have extended the features of the two models to guarantee customers a fault-free, high-quality picture at affordable prices,” said Marlies Smeenk, European marketing manager at CTX.

Product specifications for the S762G+ and S962G+:

101-day zero dead pixel warranty
Full screen image at maximum resolution
2 x 1W stereo speakers
25ms response time
VESA wall-mounting standard compliant, TCO’99, ISO13406-2
Additional product specifications for the S762G+:

17" diagonal screen
TN active matrix TFT LCD
16 million colours
450:1 cr
0.264mm pixel pitch
160 o horizontal and vertical viewing angles
SXGA resolution, 1280 x 1024 @ 60Hz
Additional product specifications for S962G+:
19" diagonal screen
MVA Active Matrix TFT LCD
16.7 million colours
700:1 cr
0.294mm pixel pitch
170 o horizontal and vertical viewing angles
XGA resolution, 1280 x 1024 @ 60Hz
The monitors will be available in May 2004. Please contact for local pricing.

For more information about CTX Europe, please visit click here

  Matt45 21:18 27 Oct 2004

Thanks for all your help. I have the S762A and the zero dead pixel guarantee applies to the S762G+ - just my luck! I'll see how it affects my usage over the next few days and then decide whether it needs sending back. Once again, thanks.

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