Answer to: No screen,no sound,even not itunes cant detect my phoneTry checking the ribbon cables near the dock connector. You might have damaged one of them. The next best bet is that you damaged the logic board. Good Luck Fixing.
Answer to: System only runs Mario/Duck Hunt. Out of ideas, need help!At this point, the only thing that could cause this is the 72 pin connector, also, I don't think that boiling the 72 pin connector will help with this problem. You may have ruined the 72 pin connector by boiling it 3 times. Water NEVER fixes electronics, only makes them defunct. In the future if this happens again, just replace the 72 pin connector. NEVER try boiling it again. It is an inexpensive and easy to replace part. Good Luck!