I disassembled it to do some mods and reassembled it and when I try to turn it on.. I only get a flicker of the power led.. that's all I connect the charger to it and it's charging and I know the battery has juice! I don't have any Custom Firmware if that may be the problem.
told you to be careful
first thing first go back and recheck if everything was reconnected correct and retry
second if everything looked ok remove any modifications you made from leds to wires see if that works
maybe take some pics to see if we can see anything you might have missed of the area you made mods to