Quote Originally Posted by tastymannatees View Post
I also had a thought on a poorman's or DIY contact test. coat the IHS with graphite(soft pencil ?) put a piece of paper, maybe tissue paper 1.5X 1.5 in. between the IHS and sink and clamp. Should show where the CPU is making contact and where it is not. Kind of like taking a rubbing off an old tombstone

Or better yet use some carbon paper from the old typewriter days and a clean piece of white paper

Might be interesting to compare to the pressure film result

I thought about the carbon paper as well. I told my wife that it looked almost the same after I had worked with the 2 sheets I had.