iPhone 5 no display

Hi guys,

My iphone 5 was originally water damaged so i put out to dry for 2 days and then another 2 days in the rice bag and then cleaned it. replaced the LCD and battery. All started working fine and keep working for 2 months and then all of sudden no display while the phone was working but without display. I ordered another screen and replaced it but no luck. The phone detects in itune just fine. I also checked the LCD connector which seems fine too. Not sure what to look next. Any suggestions?

Thanks for time and help in advance

Regards,

Ehtisham