This video shows a reballed GPU (replacement chip) being placed on the motherboard.
The original GPU was partially dead from the owner repeatedly doing the overheating trick. I reflowed the GPU, reballed it and reflowed the southbridge but got the E73 error after all tries. When this happens, the GPU must be replaced.
Please check the other videos for the real alignment and reattachment back to the motherboard, finally followed by a boot up test.
I will upload videos of the GPU chip being pulled from the motherboard and solder balls being put back onto the chip in other videos.
use gloves bro MEK causes liver cancer. google it.
SMAKDON01 4 days ago