Troubleshooting Problems

Fixing-up any old gear

Started by vansinn

Pages1 2

Replies: 15
Views: 23,397

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

MP2 starts out quiet but gets gradually more noisey

Started by h.e.l.shane

Replies: 0
Views: 3,834

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

MOVED: Techniques and tooling

Started by rnolan

Replies: 0
Views: 3,635

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

Rear Input Jack

Started by Jaster

Replies: 1
Views: 4,412

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

Midi issues

Started by dannyde

Replies: 1
Views: 4,022

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

MP-1: Improving ripple distortion in compressor.

Started by Kazinator

Replies: 1
Views: 1,907

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

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

Started by Overtone85

Replies: 1
Views: 3,742

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

No Edit Function after replacing battery and eprom

Started by potus2028

Replies: 1
Views: 4,969

October 14, 2022, 09:30:47 PM
by rnolan

Rear output jacks

Started by Gupr01

Replies: 1
Views: 750

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

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

Started by BoWeevil2017

Replies: 1
Views: 4,089

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

MP-1: degraded sound quality when panels open.

Started by Kazinator

Replies: 1
Views: 1,007

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

Bad buzz or rumble on mp-2 high gain modes

Started by h.e.l.shane

Replies: 2
Views: 4,663

July 14, 2014, 09:43:55 AM
by W.Laturno

110v -> 220v

Started by Sirion

Replies: 2
Views: 3,926

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

MB-1 Error Messages

Started by kawai2g4b

Replies: 2
Views: 6,348

November 29, 2013, 08:14:48 PM
by kawai2g4b

ADA MP1 - Tube Board Problem and Resolution.

Started by MR THUD

Replies: 2
Views: 4,925

November 12, 2021, 09:19:51 AM
by MarshallJMP

MP1 and Cold Exposure

Started by Chip Roberts

Replies: 2
Views: 5,171

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

No sound on select preset channels and weird output level knob behavior

Started by Andrew Smith

Replies: 2
Views: 4,627

March 07, 2018, 04:22:32 PM
by Andrew Smith

Srange Chorus problem

Started by Pete66

Replies: 2
Views: 3,246

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

Fixed: MP-1 with ALL clip leds lit solid and NO sound (long post)

Started by Pork_Chop

Replies: 2
Views: 4,248

November 12, 2021, 09:17:43 AM
by MarshallJMP

Light went out on MP-2 display

Started by Ekornbakke

Replies: 2
Views: 4,377

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