Willsenton R8: Replacing the Front End Components
26:47
Willsenton R8: Fixing Lead Dress and Grounding Faults #2.
28:23
Willsenton R8: Must do Modification to Bias Boards!
22:03
Willsenton R8: Explain and Mod the Voltage Regulator 6SN7
30:25
Tube Lab #135 - Willsenton R8 Tube Substitution
1:01:34
Tektronix 547 Valve Oscilloscope Repair - Part One
22:48
Willsenton R8: Mod of the Voltage Regulator 6SN7 tube
22:19
Willsenton R8: Fixing Lead Dress and Grounding Faults.
29:52