Troubleshooting Problems

Viper trouble

Started by Dante

Pages1 2

Replies: 18
Views: 13,975

May 05, 2018, 01:24:28 AM
by MarshallJMP

Got noise???

Started by Dante

Replies: 7
Views: 6,131

January 15, 2018, 12:27:21 AM
by rabidgerry

Ah the joys of troubleshooting

Started by Dante

Replies: 14
Views: 8,609

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

Wrong channel comes up on my MP-1

Started by Darth Infernus

Replies: 9
Views: 6,801

May 22, 2015, 01:36:41 AM
by rnolan

Microphonic type squealing

Started by Darth Infernus

Pages1 2

Replies: 18
Views: 10,378

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

Ground hum noise

Started by dave_daut

Replies: 5
Views: 4,991

April 08, 2014, 08:45:59 AM
by rnolan

ADA MPC Midi Controller display isn't working correctly - power issue?

Started by dbjacobson2112

Replies: 14
Views: 12,124

June 14, 2014, 09:38:06 AM
by dbjacobson2112

Sound issues after noise mod

Started by Deregorn

Pages1 2

Replies: 29
Views: 14,739

June 19, 2014, 02:41:35 PM
by MarshallJMP

Troubleshooting hum and weird microphonics

Started by DesmoBob

Replies: 5
Views: 5,517

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

B200s hum

Started by duecemfhatchet

Replies: 3
Views: 3,007

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

Light went out on MP-2 display

Started by Ekornbakke

Replies: 2
Views: 3,827

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

No lights, no display, no sound

Started by emunstar

Pages1 2

Replies: 25
Views: 9,065

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

Rack grounding?

Started by Georgeclooney0

Pages1 2

Replies: 29
Views: 9,163

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

ADA mp1 - Solid States works only

Started by gg85

Pages1 2 3

Replies: 31
Views: 6,859

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

MP-1 Flipping Presets

Started by Griphook

Replies: 10
Views: 5,535

July 26, 2018, 11:18:15 PM
by Griphook

Viper probs, info moved from Schematics section

Started by guitardude57

Pages1 2 3

Replies: 32
Views: 15,277

June 02, 2017, 03:28:21 AM
by MarshallJMP

MP2 starts out quiet but gets gradually more noisey

Started by h.e.l.shane

Replies: 0
Views: 3,270

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

Bad buzz or rumble on mp-2 high gain modes

Started by h.e.l.shane

Replies: 2
Views: 4,058

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

[Solved by MarshallJMP] MP1 doesn't start up - mysterious blinking

Started by hal2000

Pages1 2

Replies: 21
Views: 14,030

January 27, 2014, 10:03:05 AM
by MarshallJMP

MP1 No Output, "Magic Smoke" smell

Started by Hambone

Replies: 7
Views: 2,597

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