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Cause of red/reddish W520 screen

W500/510/520 and W700/710 series specific matters only
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helicopter
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Cause of red/reddish W520 screen

#1 Post by helicopter » Tue Mar 24, 2020 10:52 pm

Another question, Thinkpadders:

What causes a slightly reddish screen in the grey/blue areas of windows menu bars and sometimes in B/W photos? Sometimes I can correct the problem by changing the screen angle. Break in the display cable? I don't think it's a color calibration problem, though I'm open to all suggestions. I already opened up the machine and checked that the cable above the keyboard was seated properly.

This is a W520, 4270-CTO, running Windows 7.

Thanks.

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Re: Cause of red/reddish W520 screen

#2 Post by RealBlackStuff » Wed Mar 25, 2020 12:34 am

All W520 screens are LED, so it's not a CCFL dying.
By now that machine is 8 years old and will have been used for many moons.
It could be a screen going bad, a loose cable connection (check both LCD and motherboard connectors), bad cable, bad LED-board, bad drivers, or bad calibration.
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Re: Cause of red/reddish W520 screen

#3 Post by 600X » Wed Mar 25, 2020 9:29 am

The FHD W520 screen does not use white LEDs, but instead uses a R + GB backlighting system to achieve superior color gamut. In fact, it covers 95% AdobeRGB. That's perfect for print, but UI elements and pretty much all digital content is designed for sRGB, not AdobeRGB. That's why some colors may be too saturated when displaying sRGB content on an AdobeRGB screen.
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helicopter
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Location: Brooklyn, NY USA

Re: Cause of red/reddish W520 screen

#4 Post by helicopter » Fri Mar 27, 2020 9:45 am

Thanks. I played around with the profiles, but don't think that's it.
I suspect the cable, because the problem is intermittent, and sometimes I can adjust the lid/screen angle, and it goes away.
The hardware manual says the cable is FRU 04W1565. But I can open the LCD assembly and check the connector first.

wujstefan
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Re: Cause of red/reddish W520 screen

#5 Post by wujstefan » Sun Mar 29, 2020 1:35 pm

Well, I've seen that couple of times. Each time cable was the issue.

What is your screen? HD, HD+, FHD?
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