I investigate issues in a Marshall 4210 Combo, that had a 2205 circuit,
and turned out to be defective.
0:00 - An Amp with Issues
3:29 - Comparing to the Schematics
5:50 - An Surprising Defect
6:17 - A Poorly Fitted Board ?
7:37 - Reviewing Capacitors
8:44 - The Bias Pot
9:35 - Pulling the Board
11:23 - Inspecting the Troubled Pots
12:19 - On Board Cap Replacement Montage
15:39 - Resoldering the Board
16:24 - Reseating the Board
17:53 - Replacing the Large Can Caps
21:16 - Resoldering The Wire Connections
22:35 - Installing 1ohm Bias Sense Resistors
23:56 - Tube Install & Roll
26:24 - Biasing
27:45 - Testing
28:42 - It's going to need more work ...
Негізгі бет Marshall JCM800 "4210" Combo Repair Part 1
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