Success with a Radeon HD 5670 on a thrift store box I'm planning on flipping! Thanks for the guide.
Can you specify which side to have up?
What about it was not seated properly? any specific contact point? was it not screwed in well if it wasn't seated properly? I just replaced on a friends 4, but it has not turned on yet, and I can't figure it out. It just stopped charging one day so I figured it was a bad port from corrosion or something and replaced it. The swap was easy enough so I'm confused as to why it isn't turning on yet.