XS2300 diode values

Good day all

I have a Phoenix gold xs2300 I have been working on and need to know the values of a couple diodes to replace them. I have pictures attached. Thank you.
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I replaced all the MPSA56 & MPSA06 transistors as well as all 5254, 5233, &4148 diodes and 2389 pairs. I found the IRF540 fets in the right channel were bad so I replaced them with new IRF540N fets. When I tested the amp the left channel was good however there was no sound output on the right channel. I thought perhaps it was because I used 540N fets rather than 540's so I swapped the fets across channels and retested. When I put power to the amplifier after switching the fets I get a blown fuse.
 
After further research I found that I am considered a parts changer. That That term is accurate. I am trying to learn how to properly diagnose and repair amplifiers, if there are resources anyone could recommend I would appreciate it.