my samsung tablet screen wont turn on. I have sound and just grey lines.

Solution
From what you are saying it sounds like your screen is going, but the rest of the device may well be fine.

Have you tried rebooting it a few times? Also, you may try finding the "Reset" button on the device and see if this will help. It should be a little pinhole that you can use a pen tip or similar item and reset the device. Just don't use an actual pin or other very pointy object.

If the device is under warranty still, you should contact your service provider or the manufacturer to see if they can either repair or replace it.

NOTE: Prior to doing that you may want to connect it to a computer via USB and see if you can save your personal data to the computer.

If the device is out of warranty, then you can either try replacing the...
From what you are saying it sounds like your screen is going, but the rest of the device may well be fine.

Have you tried rebooting it a few times? Also, you may try finding the "Reset" button on the device and see if this will help. It should be a little pinhole that you can use a pen tip or similar item and reset the device. Just don't use an actual pin or other very pointy object.

If the device is under warranty still, you should contact your service provider or the manufacturer to see if they can either repair or replace it.

NOTE: Prior to doing that you may want to connect it to a computer via USB and see if you can save your personal data to the computer.

If the device is out of warranty, then you can either try replacing the screen yourself, or contact a local tech and see what they would charge to do so.
 
Solution