Uhhh well take it to someone who knows what they're talking about, the APU won't get "corrupted". BLOD is usually caused by one of two things, the solder used for the APU gets oxidized and causes a bad connection, or sometimes you can get BLOD from a bad HDMI port/controller.
To fix the former, you generally just reflow the solder using something like a rework station. You would basically never desolder and resolder a new APU. You could attempt to reflow the solder in an oven, but I don't recommend it.