Troubleshooting Problems

Microphonic type squealing

Started by Darth Infernus

Pages1 2

Replies: 18
Views: 10,371

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

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

Started by Bret

Replies: 5
Views: 10,345

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

MP-1 v.2 Not editable equalizer.

Started by RVLP

Pages1 2

Replies: 15
Views: 10,086

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

Microtube 200 with no output

Started by calan

Pages1 2

Replies: 15
Views: 10,056

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

Rack grounding?

Started by Georgeclooney0

Pages1 2

Replies: 29
Views: 9,130

December 04, 2018, 11:07:57 AM
by rabidgerry

Gain drop

Started by Richie_B

Pages1 2

Replies: 17
Views: 9,060

July 12, 2016, 07:22:55 AM
by MarshallJMP

No lights, no display, no sound

Started by emunstar

Pages1 2

Replies: 25
Views: 9,031

March 04, 2020, 11:42:35 AM
by MarshallJMP

ADA MP-1 Extreme Restoration

Started by SteveFuzz

Replies: 14
Views: 9,018

March 09, 2017, 05:24:45 AM
by Iperfungus

MP1 v 1.38 no sound can someone help me out?

Started by Wormwoody

Pages1 2

Replies: 16
Views: 8,898

May 05, 2018, 10:06:19 AM
by Wormwoody

Help with mp1 - low distortion and "sputtering"

Started by Cstecker

Replies: 13
Views: 8,784

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

MP-1 high pitch squeal

Started by kfowler8

Replies: 13
Views: 8,675

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

Ah the joys of troubleshooting

Started by Dante

Replies: 14
Views: 8,573

December 14, 2016, 01:27:26 AM
by rnolan

MP-1 MIDI not working

Started by niksa

Replies: 11
Views: 8,225

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

MP-1- err 1 on startup

Started by tabascojunkie

Replies: 8
Views: 7,861

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

Bass setting not saving

Started by revhed666

Replies: 14
Views: 7,660

March 31, 2014, 09:51:25 PM
by rnolan

Low Volume & Unpleasant Distortion in one output channel.

Started by Auntie Ada

Replies: 9
Views: 7,383

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

4ohm Resistor Across C131 & D38 ?

Started by red2203stack

Pages1 2

Replies: 16
Views: 7,371

January 20, 2019, 04:36:13 PM
by red2203stack

Very OT: Refrigerator repair

Started by vansinn

Replies: 12
Views: 6,942

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

MP1 V2 (no top switch) All original excluding battery mod

Started by ScottGray

Pages1 2

Replies: 26
Views: 6,825

October 18, 2020, 11:03:11 AM
by MarshallJMP

LED Issue MP1

Started by Mojave

Replies: 4
Views: 6,816

December 31, 2023, 12:47:45 PM
by Mojave