I don't have any deox so I used a cleaner for r/c cars (I love this stuff it's safe on plastic) I cleaned the tubes with alcohol. I did find one bad solder joint (not mine
! but it's still dead
no tube glow. Should I try jiggling the tubes while it's on? I am almost thinking it's the power "switch" , I'll check it out with a multimeter whenever I'm not tired