Hello Forum! Just let me say first off that my knowledge of solid state amps is very minimal. I usually try to stick with tube amps and have a pretty good record with repairing and modding them. Solid state, not so much. I've fixed a few with minor issues, but generally steer clear of them because of my lack of knowledge of solid state circuits.
A friend dropped off his tube amp for retube and bias and with it asked if I could take a look at his other friends SVT 350. Finished up the tube job and figured I'd look at the Ampeg. The fan wasn't working and I thought it might be something minor. That was my mistake. I opened the amp an was checking voltages when I had a probe slip at Q14. Spark and popped the 10amp fuse. I put a new fuse in and said a prayer, but it wasn't my day. Fuse stayed good, but smoke from R20, R21, R45 and they died. I removed Q14 from the circuit and replaced the resistors listed above. I hooked up my current limiter and plugged it back in and got an initial surge but then the light dimmed. The resistors still got pretty warm but I didn't leave it plugged in too long so I wouldn't do to much more damage. Where do I go from here? Schematic attached. Thanks in advance.