Seems that post went under my radar but damn! Chassis so clean I could almost see some reflection. You guys get some nice goodies!
Thanks bro!
I thought I need to change the electrolytic caps due to the age of the amp. They are however in excellent physical condition with no signs of any damage so I decided against replacing them.
I also checked the voltages against the schematic to have some reassurance and got readings very close to the expected levels.
The old caps are physically much bigger than the equivalent modern ones. I realized/rationalized that the old big caps has greater tolerances than the equivalent small modern caps. The old caps has been working well so far so I am betting on them lasting for quite a long time.