The Guitologist | 2 years ago

In this video we'll repair a c.2006 Epiphone Blues Custom 30W Tube Amp. This model was "designed in a California garage" by Pyotr Belov, with Michael Soldano doing the PCB layout. Gibson got a lot of things right with this amp model, but they got one very big thing WRONG! That's why this one ended up having some BIG problems. We'll troubleshoot all the issues and answer the question: is this amp worth the high cost of repair? You be the judge.

0:09 SHIPPING MASTERY!
2:26 First Impressions, Quality Assessment
11:15 Half Power & EQ Switches
14:23 Troubleshooting
21:32 Schematic of Power Section
25:36 More Testing
30:25 Cigar Box Current Limiter
40:49 Pulling the Main Board
41:27 Cursing Tirade
45:26 Installing New Mercury Transformer
49:35 Testing New PT, Discovering New Problem
1:03:23 Replacing Pot Without Removing Board
1:06:39 Final Thoughts
1:08:07 Demo with 1960 Gibson ES-125TDC
1:12:30 Demo with Zio Meteorite Signature

#electronics #repair #guitar

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Mercury Magnetics Power Transformer Replacement