Quote from: mccutter on January 13, 2024, 09:11:44 AMIt's called CR13 (one of these in the heat sink)CR10 to 13 are critical to the bias circuit as they compensate for the heatsink temperature. The Fender part # for them comes up as BYV26E. You should replace all 4 just to be safe.
Seems to be good but the vf value is different from the others (616mv vs 840mv)
Also, what I said earlier about checking for DC with no load won't work on this amp, because of the IC driver. You will need some resistor on the output instead of the speaker, 1K should be safe for testing.