As I'm sure you all know, this hobby is a slippery slope. Started out with speakers, then vintage turntables, then onto some excellent vintage receivers and now I've finally made the jump into tubes! I picked up this Fisher 500C this past weekend, it was in great cosmetic condition and the guy demo'd it and it sounds terrific. He wasn't super technical, said he had some work done but was not exactly sure what. What I'm looking for is some advice on what needs to be done on this. Looking under the hood it looks to me like some of the caps were replaced. I did notice the Siemens selenium rectifier(?) which I've read about on here, so that probably needs to go. I don't know if the cans have been done and the tubes look like a royal sampler of brands. I want to also swap out those speaker terminals with some newer ones that will accept banana plugs (really hard to wire those when in the wood case). I'm not an electronics guy per se but I can use a soldering iron if I have clear instructions and am pointed in the right direction (I've rewired tonearms, soldered cross-overs etc). If it's out of my skillset then fine, I'll find a local tech to take it on but I'd like to at least go in armed with some knowledge on what it needs. Thanks!