Troubleshooting Problems

MP-2 After the noise mod - Spanky Clean is distored . . .

Started by W.Laturno

Pages1 2

Replies: 19
Views: 11,574

June 16, 2014, 05:14:37 AM
by rnolan

MP-1- err 1 on startup

Started by tabascojunkie

Replies: 8
Views: 7,550

July 27, 2017, 03:50:00 AM
by MarshallJMP

MP-1 volume drop

Started by revhed666

Pages1 2

Replies: 21
Views: 10,673

May 20, 2016, 08:24:13 AM
by Harley Hexxe

Mp-1 v2 mod 3 no output in tube anything

Started by bunkyloo

Replies: 10
Views: 4,080

October 05, 2018, 02:16:17 AM
by rnolan

MP-1 v.2 Not editable equalizer.

Started by RVLP

Pages1 2

Replies: 15
Views: 8,019

October 28, 2022, 09:18:08 AM
by MarshallJMP

MP-1 no display or LED's

Started by andtimebegins

Pages1 2 3 ... 5

Replies: 70
Views: 9,615

February 09, 2021, 06:36:21 AM
by Iperfungus

MP-1 MIDI not working

Started by niksa

Replies: 11
Views: 7,114

January 10, 2021, 06:30:02 AM
by MarshallJMP

MP-1 high pitch squeal

Started by kfowler8

Replies: 13
Views: 8,496

September 09, 2014, 01:13:59 PM
by kfowler8

MP-1 got Noisy...

Started by rabidgerry

Pages1 2 3

Replies: 34
Views: 16,768

July 02, 2017, 04:53:43 PM
by MarshallJMP

MP-1 full refurb and restoration

Started by Systematic Chaos

Replies: 4
Views: 1,958

November 23, 2022, 07:09:05 AM
by MarshallJMP

MP-1 Flipping Presets

Started by Griphook

Replies: 10
Views: 5,067

July 26, 2018, 11:18:15 PM
by Griphook

MP-1 diagnosis

Started by willem

Replies: 4
Views: 4,721

December 02, 2014, 10:55:53 AM
by MarshallJMP

MP-1 Classic Noise Gate "stuck" at max values even when turned off

Started by Bret

Replies: 5
Views: 4,612

April 24, 2024, 03:19:42 PM
by Harley Hexxe

MP-1 Classic dead

Started by tangohf

Replies: 4
Views: 4,204

December 07, 2014, 04:50:19 PM
by MarshallJMP

MP-1 A channel much quieter than B

Started by Mxzx

Pages1 2 3

Replies: 31
Views: 15,382

February 12, 2014, 06:32:21 PM
by El Chiguete

MOVED: Techniques and tooling

Started by rnolan

Replies: 0
Views: 2,962

April 16, 2016, 05:00:51 AM
by rnolan

Midi issues

Started by dannyde

Replies: 1
Views: 3,233

April 12, 2014, 07:17:04 PM
by rnolan

Microtube 200 with no output

Started by calan

Pages1 2

Replies: 15
Views: 9,841

October 30, 2015, 12:34:21 AM
by rnolan

Microphonic type squealing

Started by Darth Infernus

Pages1 2

Replies: 18
Views: 10,246

May 18, 2015, 10:38:38 PM
by Darth Infernus

MB-1: Brand New Tubes, no sound on "Edge" or "Full" settings...

Started by BoWeevil2017

Replies: 1
Views: 3,256

February 21, 2017, 12:57:24 PM
by MarshallJMP