Amazingly no tubes where missing when I got it, but I did replace 2 227's that read weak. And after replacing a very bad power cord and slowly bringing up the voltage I do get (and only get) a 60hz hum. So all thats left to do now it take a hammer to it or something so I can get to the capacitors inside the metal boxes. They are held on by what looks like non removeable pins since they probly thought nothing bad would ever happen to them old capacitors COUGH COUGH yeah riiight!