Is that 470uf cap not soldered to the board properly? Is a leg loose?
If so, it could be the cause of your problem. A cap that large is normally used to filter noise in the power supply. Loose such a cap, noise returns and odd things happen. Anyone skilled with a soldering iron should be able to reattach it. Do you have a local audio/electronic shop nearby? Someone there could help if all that's needed is soldering in a replacement cap.
Plaz
