Troubleshooting Problems

MP1 No Output, "Magic Smoke" smell

Started by Hambone

Replies: 7
Views: 2,653

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

MB-1 no output

Started by peoriashows

Replies: 7
Views: 4,800

July 28, 2018, 11:51:45 PM
by rnolan

MP1 Classic Clean Issue

Started by AndiK

Replies: 7
Views: 4,856

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

Got noise???

Started by Dante

Replies: 7
Views: 6,141

January 15, 2018, 12:27:21 AM
by rabidgerry

MP-1- err 1 on startup

Started by tabascojunkie

Replies: 8
Views: 7,878

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

MP1 - Developed very loud hum on tube settings

Started by MR THUD

Replies: 8
Views: 3,236

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

MP1 - > Midiverb II -> UX2?

Started by Chip Roberts

Replies: 9
Views: 5,497

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

Low Volume & Unpleasant Distortion in one output channel.

Started by Auntie Ada

Replies: 9
Views: 7,403

July 29, 2015, 02:26:50 PM
by MarshallJMP

Wrong channel comes up on my MP-1

Started by Darth Infernus

Replies: 9
Views: 6,802

May 22, 2015, 01:36:41 AM
by rnolan

MP-1 Flipping Presets

Started by Griphook

Replies: 10
Views: 5,541

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

Mp-1 v2 mod 3 no output in tube anything

Started by bunkyloo

Replies: 10
Views: 4,428

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

MP1 1.38 - Is my Chorus failing???

Started by skarkowtsky

Replies: 11
Views: 3,806

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

MP-1 MIDI not working

Started by niksa

Replies: 11
Views: 8,401

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

V1.38 gain drop/loss just seconds after startup / warmup (solved)

Started by Systematic Chaos

Replies: 11
Views: 3,644

October 28, 2022, 07:26:03 PM
by rnolan

Help with MC-1

Started by Wimbish

Replies: 12
Views: 6,797

February 01, 2018, 04:44:14 AM
by rnolan

Very OT: Refrigerator repair

Started by vansinn

Replies: 12
Views: 6,955

July 12, 2016, 12:50:14 PM
by vansinn

MP-1 high pitch squeal

Started by kfowler8

Replies: 13
Views: 8,687

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

MP2 suddenly noisy after a show

Started by SidecarJoeG

Replies: 13
Views: 10,699

May 10, 2014, 07:12:23 AM
by MarshallJMP

Help with mp1 - low distortion and "sputtering"

Started by Cstecker

Replies: 13
Views: 8,818

February 27, 2017, 03:58:07 PM
by Harley Hexxe

Latency with SPX90

Started by Chip Roberts

Replies: 13
Views: 5,883

July 01, 2020, 03:07:40 AM
by rnolan