[Station X]

Reseat the plugs on the circuit board. Check the reverse side of the board for cracks in the tracks.

Do any of the electrolytic capacitors have bulging ends or show signs of leaking electrolyte? If so they're ripe for changing.

I think I can also see some tantalum capacitors. Have any of them exploded or gone short circuit?

If you google the IC types you may find that one of them is an audio chip which may have failed. In the absence of a circuit it's a case of poke and hope though.