I have a Lg mytouch that wont turn on and it's completely dead

I have been searching for months to find a solution for my problem, my phone is completely dead it wont turn on the screen is blank and I cant hear it vibrate or anything I have tried using 50 different chargers and that didn’t work and I have tride letting it charge for 24 hours and it still would not do anything I have tried buying a new battery and that didn’t work. Please help.