u/DavesPlanet

I have extensive concrete damage on a 4 year old install. Contractor is blaming me for using salt (in central iowa winters), but I have experts telling me this was probably interior concrete poured in my driveway. I've been disavowed by the Contractor, so no help there. There are areas which sound hollow when I rap my knuckles on it. How do I break the damaged concrete off the surface, and what do I do to fix it? What do you think of breaking out the bad, giving it a solid pressure washing, and a nice epoxy finish? Video shows much better detail than the still shots:

https://youtu.be/EbrtC2\_G7Hw

bought this in 1982 with $300 of my paperboy money. It's now at my mom's estate in Des Moines IA and I don't know what to do with it. I wasn't able to get it to play when I turned it on, lights come on but the selector buttons didn't work. It is tube powered. any advice about what to do with it would be greatly appreciated