Troubleshooting Problems

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

Started by Bret

Replies: 5
Views: 9,409

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

MP-1 diagnosis

Started by willem

Replies: 4
Views: 4,783

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

MP-1 Flipping Presets

Started by Griphook

Replies: 10
Views: 5,414

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

MP-1 full refurb and restoration

Started by Systematic Chaos

Replies: 4
Views: 2,717

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

MP-1 got Noisy...

Started by rabidgerry

Pages1 2 3

Replies: 34
Views: 17,298

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

MP-1 high pitch squeal

Started by kfowler8

Replies: 13
Views: 8,636

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

MP-1 MIDI not working

Started by niksa

Replies: 11
Views: 7,781

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

MP-1 no display or LED's

Started by andtimebegins

Pages1 2 3 ... 5

Replies: 70
Views: 12,141

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

MP-1 v.2 Not editable equalizer.

Started by RVLP

Pages1 2

Replies: 15
Views: 9,294

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

Mp-1 v2 mod 3 no output in tube anything

Started by bunkyloo

Replies: 10
Views: 4,325

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

MP-1 volume drop

Started by revhed666

Pages1 2

Replies: 21
Views: 10,858

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

MP-1- err 1 on startup

Started by tabascojunkie

Replies: 8
Views: 7,797

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

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

Started by W.Laturno

Pages1 2

Replies: 19
Views: 11,736

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

MP1 - > Midiverb II -> UX2?

Started by Chip Roberts

Replies: 9
Views: 5,392

April 23, 2017, 04:14:44 PM
by Harley Hexxe

MP1 - Developed very loud hum on tube settings

Started by MR THUD

Replies: 8
Views: 2,667

August 29, 2022, 11:38:14 AM
by MarshallJMP

MP1 1.38 - Is my Chorus failing???

Started by skarkowtsky

Replies: 11
Views: 3,258

May 09, 2021, 02:50:58 AM
by MarshallJMP

MP1 and Cold Exposure

Started by Chip Roberts

Replies: 2
Views: 4,296

December 10, 2017, 08:17:01 PM
by herbyguitar

MP1 Classic Clean Issue

Started by AndiK

Replies: 7
Views: 4,767

May 01, 2019, 04:06:36 AM
by MarshallJMP

MP1 Classic Err 7

Started by leninvargas

Replies: 6
Views: 5,215

May 08, 2023, 12:50:40 PM
by MarshallJMP

MP1 No Output, "Magic Smoke" smell

Started by Hambone

Replies: 7
Views: 2,090

August 20, 2022, 06:02:27 AM
by Harley Hexxe