After change LCD ,NO Picture.

Hello,

I have a problem with my Meizu MX 1 Note.Screen was cracked and phone worked.

I bought a new screen and ill connected to motherboard to test the LCD.Everything works fine.

When i put screen in plastic house and power on phone.Screen was black but touch screen is work.After 5 minutes , LCD is black and touch screen does not work.

Than I put old lcd and same problem.

Any advice?

Thanks