If you can see a good image in the viewfinder, but the pictures are turning out black, check that the mirror is moving when you take the picture. If it is sticking this will cause the pictures to turn out black.
If the mirror is moving ok, then a fault with the image sensor is suspected, and it will need to be sent for further investigation and repair.
Minolta themselves no longer repair cameras, however there are many independent service centers who can repair this type of problem.
What is your zip code?
Have you tried Moore's Electronics?
Let me know if you need anything else.
Don't forget to rate my help, it is how the site rewards me for my time... :)
Hi, just checking in on your question. How did things work out for you?