Ahoy there! I just bought a VSS-30 for $4 at goodwill. It had all the buttons and seemed to be in decent shape minus the battery door missing.
I put batteries in and it turned on but some of the tones were not really working. Over the past few hours I got all the tones to start working and now almost all the buttons work expect the two most important ones.
THE SAMPLE / OVER WRITE buttons 
When I press them there is no noise or anything. I am really sad about it. Is there anything you guys can suggest?
I tried using a power chord and it’s the same result. From the videos I watched it seems that if you press the sample button then it will beep and you can record your voice. Mine doesn’t beep and I tried yelling into it and then pressing keys but nothing happens.
Any suggestions?
Thanks in advance ,
Greg