Power tube going wrong: how it looks and sounds like.

Finding A Bad Tube In A Tube Amplifier

How To Test Bad Tubes With A Stick

How To Identify A Bad Power Tube With Crackling Noise

Valve Failure! Spot The Warning Signs | Too Afraid To Ask

Troubleshooting Your Tube Amplifier

Finally! The Ultimate David Gilmour Pedal: Hi-power!

5 Things You Might Not Know About Your Tube Amp!

How A Tube Works

When The Power Tube In An Amp Goes Bad

Troubleshooting Tube Amp Popping Sound: How To Find Bad Tubes Without A Tube Tester - Best Method

How To Spot A Bad 12ax7 Preamp Tube By Eyesight

Sound Dropout From Your Guitar Amp - Fix It Fast!

How To Test The Integrity Of Tubes In A Tube Amp (the Wood Pencil Test)

Tube Lab #68 - Troubleshooting Tube Amplifier Noise

Preamp Tube Being Caught In The Act Of Failing?

Red Plating Power Tubes Fix - 1966 Fender Blackface Bassman

Crackling Amplifier

How To Know When A Tube Fails In Your Amplifier | A Tube Testing Overview And Review | Tony Mckenzie

Troubleshooting Techniques That Most Amp Owners Can Do Themselves

Are Tube Amps Fighting A Losing Battle? #shorts

Simple Tests For Tubes With A Multi Meter

Guitar Myth Busting: Tubes Change The Amp's Tone At All?