ANSWER : ipad2 appear green screen phenomenon , there are two common reasons :
1.A display problem , display an internal short circuit . if it is, you must replace a lcd display. If you get to repair electrical repair , you can buy a phone bill of the new iPad . You can own the Internet to buy a lcd, you only need to spend hundreds of dollars on it. i can recommend an online shop, DBXStore. it's very good, i have been bought one once.
2.the connector is loose .
According to the , shot several times to return to normal , more likely to judge the connector is loose . General non-Apple aftermarket shop , they usually say screen is broken , needs repair $79.62 , you can insist that they re-plug the interface cable screen , if the problem is solved , just pay $15.92 fee to disassemble .
hope can help you.