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Laptop LCD screen works but won't stay on for long


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#1 damoncasale

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Posted 15 January 2015 - 12:31 PM

I have a Compaq 6820s (HP-branded) with a 17" LCD screen running Windows 7 SP1.  A few days ago, I noticed that when I woke up my computer from hibernation or booted it up cold, the screen would be a funny reddish tint, then slowly adjust to the correct color.  But now, the screen randomly turns itself off every so often.

 

It's not the power settings.  I changed them to "never" turn off the screen and it still happens.  Plugging in an external monitor works, so it's not the graphics driver.  What actually works to get it back on are one of two things:

 

1) I can hit the power button to put the computer to sleep, then wake it back up.

2) From the external monitor, I can change the display resolution of the LCD screen.  Once I change it (and change it back), the display works again, at least for a while.

 

What's going on, here?  I've priced a replacement screen on eBay for $60ish and feel comfortable with doing the repair myself, but want to know that replacing the screen will fix the problem.

 

Damon

 



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#2 jhayz

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Posted 18 January 2015 - 08:27 PM

Could be a ribbon cable, backlight or LCD itself or see this link for a complete listing with image in finding the possible culprit.


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#3 zingo156

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Posted 19 January 2015 - 12:13 PM

Follow jhayz instructions...

 

In retail from experience, the majority of the time if the color is red tinted, your backlight is on it's way out which would require replacing the lcd panel. In some rare cases, a failing inverter could cause similar issues. I would put my money on the backlight after seeing this issue so many times.


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