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Dell Inspion 11z 1121 solid band on right side of screen?


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#1 Johnz414

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Posted 11 October 2017 - 10:27 AM

Hi,

 

I am servicing a Dell Inspiron 11z 1121 which has a screen problem.

 

There is always a 2" thick solid band on the right side that varies in color? Sometimes blue and most recent very dark blue almost black.

 

Does anyone know what might cause this and is there a fix for it?

 

All drivers are up to date. I did a scan through Dell's site and it said that all drivers are up to date.

 

A Microsoft update check says the same.

 

It seems it may be a component issue, the screen most likely or may the cable to the screen may be the problem?

 

The mouse cursor always goes behind the band.

 

Any suggestions as to diagnose it and or suggestions for a fix?

 

Thanks,

 

John


Edited by Johnz414, 11 October 2017 - 10:28 AM.

John

"Genius is nothing other than pointing out the obvious",
Albert Einstein.

"I am what I am and that is all that I am, I am Popeye the Sailor Man", Popeye.

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#2 Platypus

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Posted 11 October 2017 - 10:45 AM

It can be bad contact in either end connector of the LVDS cable running up to the screen, as you say, or in the screen itself. If you're able to access the cable connectors and unplug/replug them, and the band goes away or changes, that indicates bad contact. A clean and polish of the contacts at the cable ends with a cotton tip dampened with isopropyl will usually bring good contact up again.

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#3 JohnC_21

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Posted 11 October 2017 - 10:50 AM

Does the Bar show when using an external monitor?



#4 taurolyon

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Posted 11 October 2017 - 10:54 AM

The screen, or the signal cable to the screen, has failed.

 

Screen replacements are around $35 USD - https://www.amazon.com/dp/B004OWFVUO/

 

Cable part number is T27M3, 0T27M3 - I've found these used for around $5, or on amazon for around $34. https://www.amazon.com/dp/B00IPJJLYE/

 

Hope this helps.



#5 Johnz414

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Posted 11 October 2017 - 05:36 PM

I cleaned the monitor cable, really didn't need it. Had the same result, an on and off again multi color flashing bar displaying on the right side.

 

I did connect both the HDMI and the VGA monitor ports on the laptop. These ports have no issue, everything displays as it should covering the entire screen.

 

These ports also have completely separate hookups to the motherboard/ GPU.

 

Seems that it is pointing to the laptop screen as the issue.

 

Thanks for the link to Amazon, the owner says that will not be a problem, purchasing a new screen and replacing it.

 

Unless anyone has a different idea it looks like that is the way we will go.

 

Again thanks for the feedback!

 

PS If the cable were an issue can get a replacement on eBay for around $5 to $10.


Edited by Johnz414, 11 October 2017 - 05:37 PM.

John

"Genius is nothing other than pointing out the obvious",
Albert Einstein.

"I am what I am and that is all that I am, I am Popeye the Sailor Man", Popeye.

#6 Platypus

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Posted 11 October 2017 - 05:51 PM

An internal fault in the LCD screen seems the most likely cause then, as you say. Where the band is a fixed width and other external causes appear to be eliminated, a strong suspect would be the relevant column driver IC integrated into the smart panel. If the width of the fault seems to be a multiple of the screen width, that would be further confirmation, e.g. 1/6 of the width, one of 6 ICs has failed.

With that in mind, in that situation if you reduce the resolution of the desktop, the faulty area of the screen will stay the same physical size.

Edited by Platypus, 11 October 2017 - 05:56 PM.

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#7 Johnz414

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Posted 11 October 2017 - 06:02 PM

It is 1/8th the width of the screen. The band is 1 1/4in and the width of the screed is 10 1/8in (not diagonally).


John

"Genius is nothing other than pointing out the obvious",
Albert Einstein.

"I am what I am and that is all that I am, I am Popeye the Sailor Man", Popeye.

#8 Platypus

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Posted 12 October 2017 - 02:11 AM

That would gel with 1 out of 8 having gone bad.

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