Definitely fix it. It's worth the cost to do it. Excellent amp. Bought mine over 8 years ago on ebay for over $200, with shipping from Canada. Proceeded to put over $200 (in 2016) in miscellaneous small repairs in it at a reputable shop that is now out of business- they didn't make it through...
Picked this Sony CFD-610 up from a thrift store 2 years or so ago for $10. Everything worked but the tape player, which I could hear the motor going, just wasn't doing anything. Finally got around to putting new belts in it. Also cleaned the CD changer laser (6 disc changer!) while I had it...
I have a JVC XL-M97 6 disc Magazine changer, manufactured in '89 I think. I picked it up at a thrift for less than $10 a couple years ago. Other than having to replace belts regularly (it stays in my garage, in the desert, they dry out fast), I haven't killed it and sounds great.
Finally got my grail boombox. Panasonic RX-C60. My dad had an identical one when I was a kid, I remember listening to a lot when he was away (I was forbidden to touch it) and I swore it would be mine one day. Found out when he passed away that he had gotten rid of it at some point. Selfish...