Hi Pat;
I'm a newbie when it comes to soda machines (long time pinball collector). So I don't know about the relay or starter. I didn't want to really start ripping into the machine when the seller was coming back. I've had people I've sold pinballs to who've tried to fix their machines and usually made it worse and harder to troubleshoot.
When I plug it in, there is no noticeable noise at all.
When you say ask for $150 back, is that if it's working or not working? How much would it cost to replace/repair the compressor worst case? Are parts available?
Sorry for all the questions, but that's why they call us newbies
Thanks,
Glenn