Nikko NR 1019 stereo receiver - no output

Hello - I have a Nikko 1019 that is not outputting any sound whatsoever. It turns on, and shows sign of receiving AM signal, but is not giving any sound. The "signal" and "watts" meters do not move at all. 

There is plenty of voltage going INTO the Main Amp PCB but none coming from the Main Amp PCB into the regulator PCB that has the speaker outs. More specfically - the left channel has zero volts and the right channel starts at 1 volt but quickly decreases (it seems as if it's a capactior draining). 

This is my first amplifier repair. Any guidance on where to look/what to test would be greatly appreciated.