stuck in boot loop

I have had my iPhone 4s jailbroken for about a month and have had no problems. Yesterday without installing anything or even using my phone i looked to check the time and it wouldn't turn on. once i plugged my phone into power it booted only to be stuck in a boot loop. as soon as i unplug it from the charger it powers off. I can put it into dfu mode in iTunes, but it won't allow me to restore because the phone powers off halfway through the restore. i can't get it replaced because I'm out of warranty because i have replaced the glass multiple times.