Tube Amplifier Troubleshooting Tips

Some tube (valve) amp related tips to make your repair faster. Also a Phase Inverter explanation and more.
See below (click the show more tab) for some links to other great people, and their channels.
Peter @ TRXBench:
https://www.youtube.com/channel/UClqWe58x9q6jx61gB16731A

Tom @ AntiqueRadioandTV:
https://www.youtube.com/channel/UCcPaZhoDdFDy1k-oXiVEeDA

Eric Wasatonic:
https://www.youtube.com/channel/UCqIYUBxSPp_d8Qoe6CbNX1Q

Buddy @ The Radio Shop:
https://www.youtube.com/channel/UCHJpeSrEjtVk1YtRU3FrpQQ

John @ Joernone:
https://www.youtube.com/channel/UC738Lb57Y7mg2m6DV97ukbA

Thanks to Brian Benchoff of Hackaday.

http://hackaday.com/2015/05/20/how-to-tell-if-youre-installing-foil-capacitors-backwards/

Thanks to George Graves of Hackaday.

http://hackaday.com/2016/01/22/lets-play-wheel-of-solder/

Видео Tube Amplifier Troubleshooting Tips канала Mr Carlson's Lab