Well Bill, this is more of a power supply fix with the bonus of swapping out to a cheaper and readily available sound amp. I have seen, and have a few of the original power supplys with this update and all of them show no signs of burned traces like most QB power supplys do. With the modifications the 30v line becomes 16-18v. The power supply mod is simple, just remove the 30v zener and install the replacment zener in its place and one resistor gets swapped also....one cap and resistor get removed, thats it. Then on the sound board there are 5 components that get removed and the only part you reinstall is the piggyback board.
I have all the parts on hand to put these together except the pcbs. As soon as I get them I will assemble and start testing then they will be ready to ship. Price will be $25 +ship and will include piggyback board, the parts needed to mod the power supply and instructions.