So... posted a while back about bigfoot head problems and I was pointed to the direction of the driver board and a cap that fails. And sure enough....I had a blown cap. So after replacing that... still had problems and have been chasing them ever since. In the meantime I bought a new board and installed it...works like a champ....so decided to replace the transistors and op amp and a few diodes and pretty much rebuild my old board just to see if I could get it working....guess it's the challenge. Success....plug the old board in today and works great. Had to fix a few traces/runs that were bad also. Anyway....bottom line....I now have an extra driver board. So if anyone needs one....let me know. I will part with either one....