We replaced 44 fuses in the supply. I tested the transistors and they did not read as short circuit. They were nomonaly the same meter readings as known good transistors. Within 5 minutes of bringing the supply to 8000 amps the b bank had failed to 40% output. All of the fuses that had been replaced in the first group of band b were blown again. Either the transistors are going to a dead short under load or the balance is off for the cards. I will order 200 fuses and begin referbing and balancing the cards on Monday.