'''IBRAHIM V.I.P''' sounds like water damage to the motherboard since you already replaced the LCD. Use these guides [[Topic:Canon EOS Rebel T3i]] to work on your camera. Remove the motherboard and clean everything with 90%+ isopropyl alcohol and a soft brush. Check the board for obviously damaged components etc. If nothing else you can post some images of your motherboard with your Question. That way we can see what you see. [guide|21499]