Phone dead, not charging after I used a cheap charger
I recently ran out of chargers and bought a cheap one (with build in voltage regulator) to charge my phone. It charged about 16 percent in an hour's time. I took it off the charger within 10-20 minutes the phone went off (battery empty) and never came back on again. I used different chargers (including originals) with no luck. I replaced the battery and it went back on. Was able to charge (much slower). After taking it off the charger it drained the battery completely within 2 hours. Never to charge or come back on again.
I googled (like we all do) and found a video on youtube regarding this issue, but with an iPhone 4. A fuse of some sort went and the guy short circuit the phone while on the charger (connected to the pc to regulate the voltage). It worked for him - warned everyone not to let the battery drain completely.
Has anyone found some sort of solution to this problem? Is it a costly part replacement? And what seems to be the problem or is this guy right on with the fuse issue?
Thanks!