originally just a broken screen, performed replacement with an exact match - could not get it to turn on. Tried the charging and battery remove/replace tricks - nada. Now with an exact match from ebay, I replaced the main board also. NOW, at least I get vibrations, small beeps and all the front lights, as well as a glow to the main screen. What the heck can I try now ?? as trying to factory reset it with the usual methods is proving ineffective - I'm still getting nothing readable on the screen.