Hi,
You need to replace the screen assembly(i.e. LCD screen + digitzer).
Here are links to two videos that show how to replace the screen assembly in your tablet.
screen replacement Pt.1
screen replacement Pt.2
Here’s a link to just one supplier of the replacement part. It is shown just to give you an idea of the cost of the part. There are other suppliers that may suit you better. Just search for LG G pad X 8.0 v521 screen replacement part to get results for suppliers of the part.
It may be advisable to tell your father as most probably he’ll find out anyway. So ‘fess up and get it over and done with. He most probably won’t show it but he may be pleased that you told him before he found out about it, and that you have found out how to fix it. You could even suggest that you could both try and fix it together. ;-)
ifixit also sells the appropriate tools that you may need to use.
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2
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how old are you?
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