Using the diode test method I found what I believed to be a bad Q552 transistor. At the same time F558 was blowing. I have replaced Q552. But F558 does indeed blow every time the power on switch is pulled. The low voltage readings, except the 95V, are good at this point. 32V reads 32V. -5V reads -5V. +5V reads +5V. 95V reads 7.5V. I have checked every component in the 95V circuitry. All were good or have been replaced. Could I be looking at a bad T550 transformer or a bad HV module (U550)? From the schematic I have it would appear HV module pins 3, 5, and 11 feed T550 pins 8, 9, and 10 respectively. What would be the expected voltages on T550 pins 8, 9, and 10? Harrison N1FAM
