To repair or buy cheap?

I have a 30 year old tube receiver made by Quadraflex that I have been using for the bedroom and bathroom. (I've read the vintage section of AudioAsylum, but there isn't much info on Quadraflex. It may have been a house band made by Sanyo.) The speakers in each are just Cambridge Soundworks, and I don't have any plans to upgrade anytime soon. I listen mostly during and after my shower. :)

Unfortunatly, the amp, that has carried on all these years, is dying fast. It pops and crackles and generally makes nasty sounds. I spoke to someone who thinks he may be able to fix it for about $100. But there is no guarantee that it will work or for how long it will work after the repair.

My other option is to buy something inexpensive and solid state. I was looking at a Yamaha RX-495 or 496 for about $215.

What should I do? If I should buy, what should I buy?

Thanks!