Troubleshooting Problems

Light went out on MP-2 display

Started by Ekornbakke

Replies: 2
Views: 3,834

November 19, 2014, 05:22:06 AM
by rnolan

MP-1 diagnosis

Started by willem

Replies: 4
Views: 4,804

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

MP-1 Classic dead

Started by tangohf

Replies: 4
Views: 4,284

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

Front panel don´t work

Started by kserri

Replies: 5
Views: 5,150

January 30, 2015, 04:21:33 AM
by rnolan

Rear Input Jack

Started by Jaster

Replies: 1
Views: 3,834

March 16, 2015, 04:05:22 AM
by rnolan

Programming patches - inconsistent behaviour

Started by MikeB

Replies: 4
Views: 4,785

March 18, 2015, 09:39:15 AM
by MarshallJMP

Battery Issue in MP-1

Started by kfowler8

Pages1 2

Replies: 18
Views: 15,452

March 27, 2015, 01:07:53 PM
by MarshallJMP

No lights No sound and a hot ic

Started by t-rack

Pages1 2

Replies: 20
Views: 11,140

April 28, 2015, 02:38:42 AM
by MarshallJMP

Microphonic type squealing

Started by Darth Infernus

Pages1 2

Replies: 18
Views: 10,383

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

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

Very Strange Behaviour

Started by MikeB

Replies: 4
Views: 5,748

June 12, 2015, 03:21:17 PM
by MikeB

Troubleshooting hum and weird microphonics

Started by DesmoBob

Replies: 5
Views: 5,522

July 01, 2015, 05:51:55 AM
by rnolan

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

Microtube 200 with no output

Started by calan

Pages1 2

Replies: 15
Views: 10,100

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

MP1 Tube board issues, like am radio

Started by monty

Pages1 2

Replies: 20
Views: 13,345

January 22, 2016, 12:35:39 AM
by tomy

MOVED: Techniques and tooling

Started by rnolan

Replies: 0
Views: 3,087

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

Extreme hiss and microphonic V1 tube circuitry

Started by NeverAfter

Pages1 2

Replies: 19
Views: 10,899

May 06, 2016, 10:33:18 AM
by rnolan

MP-1 volume drop

Started by revhed666

Pages1 2

Replies: 21
Views: 10,957

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

MP1 No Overdrive/Distortion

Started by Billy Penn

Pages1 2

Replies: 23
Views: 12,261

July 12, 2016, 06:38:00 AM
by rnolan

Gain drop

Started by Richie_B

Pages1 2

Replies: 17
Views: 9,088

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