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03-14-2014

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X201 Black Screen

2014-03-14, 0:17 AM

Hi, I have a Lenovo X201, it boots up fine and the external VGA works ok, I am typing this now on the X201, but the laptop screen is completely black. On the initial boot I can very faintly see the Thinkvantage on the display. I have not added RAM or anything, just turned it off yesterday working fine and today the laptop screen is black. Any ideas?

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10708 Posts

01-02-2010

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Re: X201 Black Screen

2014-03-14, 2:44 AM
The 2 most common reasons for your symptoms are this:

Blown fuse on the motherboard
stuck switch that senses the lid is closed

Rich


To help with forum searches, check this out: https:/forums.lenovo.com/t5/Welcome-FAQs/Using-Browser-Search-to-find-your-answers-in-Lenovo-and-Moto-Community/m-p/5016916

I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

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7634 Posts

11-19-2007

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Re: X201 Black Screen

2014-03-16, 23:55 PM

Dave,

 

Rich has some reasonable suggestions...

 

I had some alternate thoughts.   If the system boots and works with an external display then I think the problem is more likely with the LCD cable, the inverter, or the LCD itself.   You said that you could barely see the ThinkPad logo at power up - I think then that the LCD is working but the backlight is not.   I think the inverter is probably the cheaper part, and I'd replace that first, and then the LCD if that didn't solve it.

 

That's my 2 cents

 

Best regards,

 

Mark

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20986 Posts

12-20-2008

Australia, Melbourne

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Re: X201 Black Screen

2014-03-17, 0:01 AM
X201 uses LED backlight for the LCD, so no inverter.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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3 Posts

03-14-2014

Auckland

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Re: X201 Black Screen

2014-03-24, 12:04 PM

Thanks Rich, Mark & Jin, I will work through these suggestions.

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08-13-2016

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Re: X201 Black Screen

2016-08-13, 20:21 PM

Hey, I was just looking for an update on this? Did you ever find out what the problem is?

I have the same exactly issue on my x201 notebook. However its inconsistent. Sometimes on bootup, the backlight will turn on, and sometimes it won't. It's completely random.

I'm wondering if I should buy a new LCD cable or not - Part No. 44C9991.

Are there any easy ways to find out if my backlighting is CCFL vs LED?

 

Thanks

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08-26-2017

SG

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Re: X201 Black Screen

2017-08-26, 17:17 PM

Your backlight must be LED.

 

I have the exact same problem on my laptop also. It comes on intermittently. Sometimes if I give it a bang or two it comes on.

 

What is the blown fuse on motherboard? But I am sure the fuse issue will not cause intermittant turn-on. Is that fuse only for LED backlight?

 

"stuck switch that senses the lid is closed" Well I am sure stuck switch will put the laptop into hibernation that means VGA also wouldn't work right?

 

Anybody actually solved this problem? I am really interested.

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07-02-2018

DE

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Re: X201 Black Screen

2019-05-13, 10:46 AM

I am guessing, but I think all of you have described the same problem: The sensor for closed screen got jammed and the screen is switched off, not by software but by internal hardware logic. I am quite sure because the OS also reacts like when the lid is closed, but turning the screen light off is OS independent. In this state, you sometimes can see a faint image on the screen, i.e. during bootup.

 

But I can not see where exactly this sensor is and how it works, this might help a lot! It might be a loose cable too.

 

For me, the problem started when my X201 once was badly squeezed during transportation. Sometimes the screen flashed back on when I moved the cable connection below the screen. After a while (and after closing/opening several times and pressing softly here and there aka voodoo magic) the screen and closed lid sensor are now working fine again. But later after normal transportation, it happened once again (and again I was able to "fix" it by just opening/closing and pressing here and there). So I really want to fix this.

 

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  • Message 9 of 9

Re: X201 Black Screen

2019-05-14, 5:14 AM

The sensor is a magnetic switch inside the lid/screen assembly.  It is tripped when it gets close to a magnet inside the palmrest or keyboard bezel.  The way I find the magnet is by sliding a little screw around on the palmrest or bezel.  When it gets close, it snaps to the magnet.  The switch is in the lid near the magnet when the lid is closed.


Rich


To help with forum searches, check this out: https:/forums.lenovo.com/t5/Welcome-FAQs/Using-Browser-Search-to-find-your-answers-in-Lenovo-and-Moto-Community/m-p/5016916

I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
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