How to repair a Marshall JMP 2104 with many problems

You will certainly likewise fulfill my gorgeous 1971 black Les Paul Custom called “Doug”, called after my very first guitar hero, Doug Ford. Doug Ford as well as (Beano) Clapton exemplify the excellent Les Paul tone to me.

The finished JMP 2104 appeared wonderful. I wish it discovered on your audio speakers.

Allow’s fix this Marshall JMP 2104 amp. In this video clip you will certainly discover exactly how to enhance Marshall’s grounding, exactly how to change that uncomfortable capacitor under the PCB, and also just how to predisposition an amp utilizing an oscilloscope.

Right here are a number of web links described in the video clip:

Allow’s fix this Marshall JMP 2104 amp. Some created by age. Some created by inadequate previous job. In this video clip you will certainly find out exactly how to boost Marshall’s grounding, exactly how to change that uncomfortable capacitor under the PCB, and also exactly how to predisposition an amp utilizing an oscilloscope.

You will certainly likewise fulfill my lovely 1971 black Les Paul Custom called “Doug”, called after my initial guitar hero, Doug Ford.

Phase Index:
00:00 Introduction
01:05 Initial Inspection
03:20 The curse of WD40
04:20 Improving the Marshall ground
06:40 Missing screws on Output Transformer
10:00 Soldering a framework ground
15:40 How to change a Marshall capacitor that is under the PCB
16:50 Schematic review of the outcome phase and also predisposition circuit.
18:40 Upgrading the predisposition capacitors and also safety measure in not exaggerating it.
25:50 How to examine for leaking combining capacitors
31:35 A typical source of signal guitar eliminating
35:40 How to make a device to tidy input jack get in touches with
37:25 How to prejudice a Marshall by plate existing as well as oscilloscope approaches
38:50 Try various tube placements for a far better suit of home plate present draw.
40:07 Setting predisposition with an oscilloscope
49:13 A gorgeous set of initial Rola Celestions
50:25 Revision of prejudice caps as well as recap
51:50 Homage to Doug Ford as well as my Les Paul called “Doug”.
52:25 Sound Test of the finished Marshall 2104.
54:26 End.

Sliders Pickups: https://sliderspickups.com/product-item/59-paf-humbucker
Doug Ford and also the Masters Apprentices: https://www.youtube.com/watch?v=d26ZPnSsP2o