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Also known as Sony Xperia C6503, Sony Xperia C6502, Sony Xperia C6506, Sony Xperia ZL LTE, Sony Xperia ZL HSPA+ Released as Sony Xperia ZQ in Brazil Launch Date: January 2013

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Why is the screen blank but working in bagkground

Screen is black but working in background,vibrates and power light blinks. So not sure why its not clearly showing?

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Hi,

Has the phone been dropped or gotten wet at all?

Try shining a torch at an angle close to the screen to check if there is an image at all.

It will be very faint so try it in a darkened room if possible to better see if it is there at all.

If there is an image then there is either a blown backlight fuse on the systemboard (and there's always a reason that a fuse blows which will have to be investigated) or a problem with the backlight circuit in the screen itself.

If it is in the screen it cannot be fixed. The screen will have to be replaced.

If there is no image then as a DIY repair all you can do is to temporarily replace the screen and check if there is now an image being displayed or not, to prove whether the problem was the screen or on the systemboard. You may have to do this as well even if there is an image being detected again to prove where the problem lies.

Here’s a link to the ifixit Sony Xperia ZL Screen Replacement guide which may be of some help.

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Brian Phillips estará eternamente agradecido.
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