Below is a video showing how to repin connectors using a ratcheting crimper like play_pinball links to. With a ratcheting crimper, you can make both crimps at the same time and the crimps will be perfect. Using on old fashioned crimper you have to make two crimps by hand, whereas with a ratcheting crimper it's more of an automatic type process.
I recommend at a minimum, re-crimping the wires and installing new connectors for the rectifier board and the sound board.