NAD 7020 Receiver Power Supply Capacitor Replacement, Buzzing, Crackling, Popping Noise, 3020 Amp

A NAD 7020 with a host of problems, but as this as the same Amp as the NAD 3020 is it going to be worthwhile sorting them all out.
Receiver problems include,
Popping sound on both channels (This Video Addresses) well hopefully ?
Bad Power Mains Switch • Nad 7020 Receiver Powe...
Bulb on Tuner not working (Video To Follow)
Buzzing Transformer (Video To Follow)