Samsung phone is bricked and I can't enter download or recovery mode

My Samsung phone is bricked and I can't enter download or recovery mode. Just black screen when I try to put on,enter recovery or download mode. I was searching on Google when I found something about soldering somewhere inside the phone to make it flash without download mode when connected to pc. Please if someone could help me search for that thanks

from xda-developers http://ift.tt/28Z9tkQ
via IFTTT