August 15th, 2018 - XServe no wurkee

Anyone knows how to solve a pesky "CPU_A HEALTH" issue on a 2006 XServe? Swapped and changed procs, swapped RAM sticks, removed fiber channel extension cards, even removed video card, changed mobo, to no avail : same hardware error... Man, I could really use that pesky computer, if I only managed to fix it! Halp plz!
Tom, a.k.a. Ludwig Von Sodabowski