Chosen Solution

Hi guys, I recently purchased a iphone 6 with a cracked screen and no screen output. I was hoping that it was just going to require a new screen however that is not the case. I have replaced the screen and there is no screen output , so i removed the logic board and put it into another iphone 6 which had all working parts however i still had no screen output. When the phone is put onto charge the logic board gets extremely hot Does anyone have any solutions or is this sounding more like a short on the logic board that is requiring micro soldering, i was contemplating giving the logic board a bath in ISOPROP but not sure if that will even make a difference Any help is appreciated Cheers community

Microsoldering will be required but it’s most likely not going to be able to get fixed as well.