I don't tend to post questions on online forums so I apologise in advance if I've messed up here.
I'm currently trying to work on an old transistor guitar amp and in taking measurements managed to short one of the output transistors with my multimeter, blowing the other transistor and a fuse (as far as i could test nothing else was damaged). After finding a suitable replacement the amp works exactly as it did before, with the same issues it had before.
However when measuring the voltage across the speaker out BEFORE the DC blocking capacitor it measures 20v! (approximately the half rail voltage) After the capacitor across the speaker there is no DC. I stupidly didn't perform the measurement before trying to work on the amp so I don't know if this is how it's supposed to be and if this is normal, and if not what I need to change to fix it.
For a bit of background the amp is (as far as I can tell) a Quasi complimentary push pull with a single rail design. No service manuals available, I couldn't even find any documentation on the amp at all.
Edit: Thanks for the help!