A little difficult from your description so a question, what board gets hot? If you mean the Ide board that usually identifies cable on backwards. Pin 1 is where the stripe on the cable must go. Not all cables have a block out pin, if we're on the right track the Ide drive board will show pin one with a square outline around the physical pin. Normally pin one on the harddrive is closest to the 4 pin power connector but there are a few exceptions. Don't hook up the new sata until you finish a determination on the previous working drive (ide). And be sure to follow o1die's advise about master slave settings.