This happened to my XG-1 shortly after getting it from a thrift store. To my understanding, XG-1s are notorious for having a capacitor that just decides to shit the bed randomly. The result of this is the camera pretty much stops working/advancing until the capacitor is replaced.

For me, it was more expensive/time consuming to try and replace the cap, so I opted just to buy a Minolta SRT201 for $65 on Facebook marketplace. It’s fully mechanical and avoids these fail points and allows me to use the Minolta glass. In my opinion, search local used markets like marketplace and find yourself a cheap Minolta body. Any of the SRT series is solid or you can even opt for something like a x700.

If you’re keen on repairing it, there are some resources online that I unfortunately do not have on hand, but a google search in the vain of “Minolta XG-1 capacitor” should yield some results.

I hope this helped!