Nokia 5300 Diplay

Blank white screen....

Hmmmm before you change the LCD try first the flex it connects to LCD to the main board...
Flex damage cause white screen, screen failure' and scramble display...;D

This might be an LCD problem... let me ask sir... did you dropped your phone? well that happened to my phone back then...
im suggesting you to open your phone and try to take out the LCD but be careful not to damage it... then try to put it on again and be sure to insert it properly, problems are your LCD is not properly connected... but if it still not working sad to say but your LCD might be damage...