my xperia z3 not turning on

[Natty1]

My phone will not switch on even when I have had it on charge all day. The red led light comes on then it goes off after 20mins. I have tried everything nothing  is working. Any ideas please 

[CameronT]

Hi @Natty1, welcome to the community.

I am sorry to hear your Z3 will not turn on

Can you please let me know what steps you have tried so far?