Fender Blackface ProReverb. Let's repair the hum, make it sound great and learn about amp repairs.

I call the Blackface Pro Reverb the “Mini Twin”. It has the same DNA as a Twin but with less than half the power at a manageable weight. Perfect for the 21st century! The sound is back to pure Fender Tube Tone Heaven but it arrived with a horrific hum.
Let’s repair this together and you may even pickup some tips on the way.
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Video Index
00:00 Introduction
04:50 External Inspection
07:55 How to fill loose holes in wood cabinet
10:10 How to Date a Fender Amp from the Tube Chart
12:25 Poor Workmanship caused the loud Hum
15:05 What is the purpose of Totem Resistors
24:28 When to change, and when to preserve, Carbon Composition resistors
28:15 Upgrade the Bias Circuit
37:18 How and why test leaking coupling capacitors
44:55 Bias method using the oscilloscope.
53:50 Select the best tube for each position
50:35 The Sound Test of the Fender ProReverb