Troubleshooting Problems

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

Started by BoWeevil2017

Replies: 1
Views: 3,631

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

Solid State Clean Gets Nasty

Started by Moff40

Replies: 5
Views: 3,570

August 29, 2022, 09:34:51 PM
by Moff40

ADA MP-1 Ground hum with good gain

Started by bunkyloo

Replies: 3
Views: 3,564

November 10, 2018, 02:50:27 AM
by MarshallJMP

110v -> 220v

Started by Sirion

Replies: 2
Views: 3,558

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

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

Started by Pork_Chop

Replies: 2
Views: 3,534

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

MP2 starts out quiet but gets gradually more noisey

Started by h.e.l.shane

Replies: 0
Views: 3,527

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

B200s hum

Started by duecemfhatchet

Replies: 3
Views: 3,358

August 20, 2019, 09:24:04 AM
by MarshallJMP

MP1 wont work with either 2.0 or 2.01 EPROM

Started by rnolan

Replies: 3
Views: 3,304

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

MOVED: Techniques and tooling

Started by rnolan

Replies: 0
Views: 3,296

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

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

Started by Overtone85

Replies: 1
Views: 3,290

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

no sound on outputs A and B, effects loop works

Started by ang3lus

Replies: 4
Views: 2,866

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

Srange Chorus problem

Started by Pete66

Replies: 2
Views: 2,567

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

No chorus and distorted SS voicing after noise mod

Started by Moulashaker

Pages1 2 3 ... 6

Replies: 81
Views: 1,296

July 09, 2024, 11:53:15 AM
by Gregg

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

Started by RobinL

Pages1 2

Replies: 25
Views: 642

July 29, 2024, 11:52:44 AM
by MarshallJMP

No SS voicing

Started by Tweeddeluxe1

Pages1 2 3

Replies: 41
Views: 426

June 28, 2024, 02:46:53 AM
by rnolan

ADA MP-1 Master Gain Volume Issue

Started by charv712

Replies: 8
Views: 227

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

MP-1: Improving ripple distortion in compressor.

Started by Kazinator

Replies: 1
Views: 148

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