09-12-2020, 03:12 PM
The 12AT7 and 19T8 tubes don't really surprise me that they needed replaced. Depending on how the radio operates, the 12AT7 is always almost DOA and I have heard talk of the 19T8 tubes being part of a trio of 'snap crackle pop' tubes that can go bad or short just because they want to. I've had 19T8 tubes that have tested great in radios before being recapped only for them to conk out or develop shorts a short while later after the radio has been restored. The 12BA6 might have been due to a bad bypass capacitor as I rarely run into bad examples of those in radios. Not impossible though!
No matter where you go, there you are.
