A word of warning on the A-12738 boards, if the replacement board has been sitting a long time with not being powered up, don't be surprised if it sparks and dies the first time you power it up. There are 4 or 5 tantalum caps on the board that tend to deteriorate over time, especially if the board has not been powered up. I've had it happen, and so have a few friends of mine. If it does happen, its an easy fix, you just have to replace the blown capacitors.