Troubleshooting Problems

Fixing-up any old gear

Started by vansinn

Pages1 2

Replies: 15
Views: 25,612

February 15, 2017, 10:27:25 AM
by DannyjoeCarter

strange loud noises mp2 when on

Started by Damn-Danny

Replies: 1
Views: 848

May 24, 2025, 09:56:48 PM
by rnolan

Rear output jacks

Started by Gupr01

Replies: 1
Views: 1,237

December 30, 2024, 08:28:32 AM
by Purgasound

MP-1: degraded sound quality when panels open.

Started by Kazinator

Replies: 1
Views: 1,456

November 04, 2024, 05:05:30 AM
by rnolan

MP-1 v2.01 120hz hum and loss of drive

Started by guitarmutant

Replies: 3
Views: 1,559

October 27, 2024, 02:35:59 PM
by Kazinator

MB-1 Err 1 + Err 7

Started by rafammbass

Replies: 8
Views: 1,676

January 16, 2025, 06:51:49 AM
by Peter H. Boer

MP-1 Front panel causing 164 Hz buzz, exaggerated when pushing buttons

Started by Purgasound

Replies: 5
Views: 2,074

January 21, 2025, 12:46:14 PM
by MarshallJMP

MP-1: What voltage do you see at front input jack?

Started by Kazinator

Replies: 8
Views: 2,320

December 02, 2024, 12:31:06 PM
by Harley Hexxe

ADA MP-1 Master Gain Volume Issue

Started by charv712

Replies: 8
Views: 2,430

June 20, 2024, 01:13:10 PM
by MarshallJMP

MP-1: Improving ripple distortion in compressor.

Started by Kazinator

Replies: 1
Views: 2,434

September 01, 2024, 08:53:19 PM
by Kazinator

Srange Chorus problem

Started by Pete66

Replies: 2
Views: 3,547

September 26, 2020, 12:43:27 AM
by Pete66

no sound on outputs A and B, effects loop works

Started by ang3lus

Replies: 4
Views: 3,760

April 15, 2020, 01:27:32 AM
by rnolan

MOVED: Techniques and tooling

Started by rnolan

Replies: 0
Views: 3,788

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

MP1 wont work with either 2.0 or 2.01 EPROM

Started by rnolan

Replies: 3
Views: 3,986

June 15, 2019, 08:48:09 AM
by MarshallJMP

MP2 starts out quiet but gets gradually more noisey

Started by h.e.l.shane

Replies: 0
Views: 4,023

July 21, 2014, 10:39:10 PM
by h.e.l.shane

New Member - just got an old MP-1 - no sound - it does turn on

Started by Overtone85

Replies: 1
Views: 4,045

October 30, 2018, 01:03:45 PM
by MarshallJMP

110v -> 220v

Started by Sirion

Replies: 2
Views: 4,082

January 05, 2017, 09:07:01 AM
by MarshallJMP

Midi issues

Started by dannyde

Replies: 1
Views: 4,175

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

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

Started by BoWeevil2017

Replies: 1
Views: 4,269

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

Loud pop/click when changing to a preset with clean tube voicing

Started by RobinL

Pages1 2

Replies: 26
Views: 4,362

February 22, 2025, 11:24:20 PM
by Wheeljack1976