So, when I plugged in the amp to measure voltages, I heard a small hiss sound, and I started to smell something, I quickly unplugged the amp, when taking a look at the amp, I got shocked by the capacitor connected to terminal 20 and 21, which I though was extremely strange as there was no power going through the amp when I was inspecting it. Something has gone severely wrong with this it seems. Heres some photos of the build in its current state.