Test and repair amp

@mikegris, depending on how much experience and knowledge you have in electronics, the first thing to keep in mind is *safety*, because tube amps can have lethal high voltages inside. Otherwise, get as much info on the amp, like schematics, part numbers and values, others who have worked on these amps, etc.

Your last sentence reminds me of the phrase "What could possibly go wrong?". Good luck and be safe.

What ever you do "DONT SEND IT TO GEORGE KAYE you will never get it back, that happened to me.

Mike, not hard at all, If the amp is working and you just want to refurbish it. 

You get a really good soldering station like this one  https://www.all-spec.com/Product/WE1010NA-12200?gclid=CjwKCAjwn6GGBhADEiwAruUcKirkb0cFkp9-ph51XKhe_3...

You need a powerful iron to do a good job without burning devices. The key to good soldering is speed. Get a cheap kit for practice. 

You need angle cutters and needle nose pliers. 

Blast the amp off with CRC electronics cleaner to get it spotless before you get started. 

Then it is just a matter of replacing parts with like parts. You can get parts from Digikey and if you want really expensive audiophile parts I use this company in the UK https://www.hificollective.co.uk/

mijostyn - Guess you didn't read the OP's post where he said the worst thing for him would be for him to do it...