Toshiba Laptop Screen Black

February 21, 2017 at 09:46:03
Specs: Windows 7, 4Gb
Hi,

I have a Satellite P500 and when I boot it the screen is black. I then close the lid to put it in Standby mode, then open the lid and the screen is working normally.

When the screen is black just after a boot, if I connect an external display, I can see everything normally on the external display.

I disconnected the battery to see if it would work (saw that on the Web) but the problem remains...

My drivers are up to date.

What's the problem? Thanks a lot for your help.

Cheers


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#1
February 21, 2017 at 10:03:42
Might be less than perfect/secure connection with the display ribbon either at the display end or on the motherboard...

That the problem seems to "go away" after you open and close the lid does tend my to think the above..

Also - If you have an external display connected and then boot up - does the external display show the boot sequence etc; or at least when it can as the desktop etc. appears - without you opening/closing the lid as you describe??


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#2
February 21, 2017 at 10:24:38
Thank you!

If I have an external display connected it shows the boot sequence and everything. I don't need to close/open the lid.


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#3
February 21, 2017 at 10:33:56
If you're comfortable at lookng inside bothe main body of the laptop and/the lid assembly... you might check the display ribbon is securely inserted at each end?

Ideally you need the service manual to know how to get access at the display end (within the lid), and likely the main body too.

Try searching the service manual for your specific model...?

There was post here not too long back where the lid sensor switch was suspect at boot up. I can't recall if the external display was also connected then, or if the blank screen merely observed on the lid display only and no external display connectd.


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#4
February 21, 2017 at 10:38:33
If, instead of closing it, you just let it sit there for awhile does the screen eventually show an image?

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#5
February 21, 2017 at 10:59:41
Ok thank you for your help.

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#6
February 21, 2017 at 12:13:50
You could also experiment with putting the lid almost all the way
down, but not far enough to push the "lid closed" button, and just
pushing the button without moving the lid.

-- Jeff, in Minneapolis


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