How to make a Blackface Princeton Reverb sound FANTASTIC!

In this video, we will work on getting the best from a Blackface Fender Princeton Reverb. These amps are important pieces of musical history to be treated with respect. We only change what is necessary to restore, improve reliability and maximise tone while respecting the history of the amp.
In this video, you will also learn about the problem of today's higher mains voltages and a practical solution.

Time Index:
00:00 Intro to Fender Princeton repair
00:43 How to Date and identify vintage speakers and transformers
06:43 Should I change vintage capacitors
07:45 The unusual AA764 circuit
14.17 What is ESR? Equivalent Series Resistance is simply explained and measured.
23:33 How to convert 2 wire power cord to 3 wire to meet modern safety standards.
25:11 Improving the Bias circuit
28:46 Testing power tubes on MaxiMatcher2
30:22 Why you should use a load on a reverb transformer.
32:18 NOS tubes. Are they a waste of money?
37:07 How to measure leaking coupling capacitors
44:40 How to avoid cross-over distortion by using an oscilloscope for biasing power tubes
47:40 How to drop the B+ Plate Voltage by changing the rectifier, but watch your current.
54:20 Auditioning the Blackface Princeton Reverb with an Epiphone Les Paul loaded with Duncan Antiquit Firebird pickups.
55:40 Conclusion to Fender Princeton repair

Видео How to make a Blackface Princeton Reverb sound FANTASTIC! канала The Guitar Amp Tech