Original post by: oldturkey03 ,
teze, you are not telling us if you cleaned it. I most certainly would suggest that you start with that. [guide|5825|Use this] guide to clean your iPhone. It was written for a 3G but all the points apply to your phone as well. [http://www.ifixit.com/Device/iPhone_4S#deviceGuides|These guides] will help you disassemble your phone. Check for broken, missing or charred components. Once it is properly cleaned, '''replace the battery''', right after you fix your battery connector. Then re-evaluate for any residual damage. " when I i unplug the battery and plug the charger straight to the phone the screens comes on and works just fine" tells you that it is '''not''' your LCD or your display circuitry, but your power circuit. Hope this helps, good luck.