Need help identifying replacement components on PCB
Despite dirt and surface corrosion, most of those parts may still be working. Test each to see if it needs replacement.


Start with gentle cleaning with detergent and toothbrush; let dry.
The culprit is likely the component with broken lead at the bottom -- you say it's a resettable fuse.
The two white rectangular objects are ceramic resistors, and a multimeter should show ~4 ohms each, within ~20% is acceptable.
The two coils are inductors and should be less than an ohm or two.
Some multimeters measure capacitance; the two yellow capacitors should be 2.2 mfd (µF), again ±20%.


Also check traces on the PCB for any breaks, which, for audio frequencies, can easily be bridged with a piece of wire.