how to repair a 2009 mac mini

Work thru the steps at > If your Mac doesn't turn on or start up - Apple Support

Then if your Mac still doesn't turn on, you will need to contact Apple Support, an Apple Store, or an Apple Authorized Service Provider and make a service appointment.

Yes, using it as a media server or player is a great way to repurpose an older Mac Mini.

It’s obsolete and can’t be serviced anywhere.

”Apple has discontinued all hardware service for obsolete products with no exceptions. Service providers cannot order parts for obsolete products.”

can’t be serviced anywhere

That not totally true.

What's stopping the local AASPs from giving out third party referrals. Plus there are plenty places on line that sell, refurbish and repair older Mac's.

You’re welcome.

I was responding to your post where you mentioned Apple thrice in the context of repair. Apple won’t touch it and neither will local AASPs who operate under license from Apple. They won’t risk referring, there’s nothing in it for them but trouble. Online non-Apple outfits, sure. If you know of any go ahead and post.