power supply 110 plug in to 220
Hello.
You should replace all visually detectable burned components, the open or shorted rectifiers, capacitors and resistors and try to make a schematic diagram by observing the power supply section and disconnect the amplifier section from the power.
Then, energize the power supply properly and check presence of voltages, and if their values correspond to some value under the electrolytic capacitors rating.
Measure the resistance from the ± power supply rails to ground on the amplification section, should not be near zero.
Only then could you attempt to reconnect the power and amplification section.
Ahhh, ... cross your fingers too.
Miguel