Troubleshooting Problems

Fixing-up any old gear

Started by vansinn

Pages1 2

Replies: 15
Views: 19,517

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

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

Started by RobinL

Pages1 2

Replies: 20
Views: 197

July 22, 2024, 09:37:07 AM
by MarshallJMP

No chorus and distorted SS voicing after noise mod

Started by Moulashaker

Pages1 2 3 ... 6

Replies: 81
Views: 877

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

No SS voicing

Started by Tweeddeluxe1

Pages1 2 3

Replies: 41
Views: 237

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

ADA MP-1 Master Gain Volume Issue

Started by charv712

Replies: 8
Views: 113

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

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

Started by Bret

Replies: 5
Views: 14,504

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

LED Issue MP1

Started by Mojave

Replies: 4
Views: 10,965

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

ADA mp1 - Solid States works only

Started by gg85

Pages1 2 3

Replies: 31
Views: 11,690

October 05, 2023, 11:42:29 PM
by rnolan

MP1 Classic Err 7

Started by leninvargas

Replies: 6
Views: 7,634

May 08, 2023, 12:50:40 PM
by MarshallJMP

MP-1 full refurb and restoration

Started by Systematic Chaos

Replies: 4
Views: 5,142

November 23, 2022, 07:09:05 AM
by MarshallJMP

V1.38 gain drop/loss just seconds after startup / warmup (solved)

Started by Systematic Chaos

Replies: 11
Views: 5,552

October 28, 2022, 07:26:03 PM
by rnolan

MP-1 v.2 Not editable equalizer.

Started by RVLP

Pages1 2

Replies: 15
Views: 13,157

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

No Edit Function after replacing battery and eprom

Started by potus2028

Replies: 1
Views: 3,776

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

Solid State Clean Gets Nasty

Started by Moff40

Replies: 5
Views: 3,471

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

MP1 - Developed very loud hum on tube settings

Started by MR THUD

Replies: 8
Views: 4,365

August 29, 2022, 11:38:14 AM
by MarshallJMP

MP1 No Output, "Magic Smoke" smell

Started by Hambone

Replies: 7
Views: 3,825

August 20, 2022, 06:02:27 AM
by Harley Hexxe

ADA MP1 - Tube Board Problem and Resolution.

Started by MR THUD

Replies: 2
Views: 4,024

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

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

Started by Pork_Chop

Replies: 2
Views: 3,433

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

MP1 1.38 - Is my Chorus failing???

Started by skarkowtsky

Replies: 11
Views: 5,212

May 09, 2021, 02:50:58 AM
by MarshallJMP

MP-1 no display or LED's

Started by andtimebegins

Pages1 2 3 ... 5

Replies: 70
Views: 19,587

February 09, 2021, 06:36:21 AM
by Iperfungus