Should I repair my Creek 4330 or replace it?

The thing is, I have loved it since I first bought it 25 years ago. But its left channel went silent a month ago and the local repair shop (HiFi Heaven in Falls Church, Virginia) fixed it twice. Each time, it sounded great for a few days and then the left channel died again. Now my choices are (1) send it off or (2) replace it.

Any thoughts on either option? Where/what/etc?

Thanks, all!