Chosen Solution

i replaced the digitizer with frame. all went smoothly.. but when i turned it on the right return and left menu buttons do not light up. i recheck the connections.. i dont see what could be wrong.. with the old digitizer they come on with no issues. any help would be greatly appreciated.

The ribbon cable coming from the screen that are responsible for the home button, back and menu button is bad. Unfortunately for that it will require another replacement screen. I recommend getting the replacement screen replaced under warranty from your seller.