HTC One X screen bug

Hi everyone, today i change my htc one x screen with an original new screen, but when i switched on the device the screen wasn`t working. After many times i tried the screen finally worked but with stranges graphic bug (wich were more intense with some pictures). Searching on the web I realised it was flickering (small red dots randomly placed). Can anybody help? How can i fix this? On my mobile i put on a cyangenmod but before i changed the screen it worked perfectly with the same rom.



Thanks

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