Z600 Repair - I have 2 Phones...

[jucks]

Hi everyone.. I have 2 SE Z600's and one of them wont power up.. the main board is screwed.. The other one powers up.. but on powering up it displayes a blue screen, and then nothing after than..(the outer screen lights up and displayes everything fine)
I have come to the conclusion that something has gone wrong on the flip part of it.. where the screen should be coming on after the phone is opened, it is not, it does not display anything... the only other thing i can think that would be wrong is that it has a software fault.
I am only trying to get the one fixed, i dont mind stripping the other one for parts.
But i just need a little help from someone who would know how to fix this type of problem..
Thanks.

[elkirf]

change the screen of the phone. all the best.