Rogue Hybrid Integrated fine, then one channel silent

Tried a different set of tubes that I purchased from a private seller (GE 12AU7) and all was working well and sounding great, listened for a couple of hours and shut it down for the night. Turned the amp on this morning, let it warm up for a 1/2 hr. and put some music on and right channel totally silent. After checking all cables from source and speakers, with heart pounding, thinking something went wrong with the amp, shut it down and put the original tubes in and all is well. I'm totally new to tube gear, is it possible for a tube to go bad overnight and there not to be any sound? Both tubes were glowing equally, really hoping it's the tube and not an issue with the amp