Troubleshooting Problems

Fixing-up any old gear

Started by vansinn

Pages1 2

Replies: 15
Views: 14,524

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

110v -> 220v

Started by Sirion

Replies: 2
Views: 3,227

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

4ohm Resistor Across C131 & D38 ?

Started by red2203stack

Pages1 2

Replies: 16
Views: 7,111

January 20, 2019, 04:36:13 PM
by red2203stack

ADA MP-1 Extreme Restoration

Started by SteveFuzz

Replies: 14
Views: 8,840

March 09, 2017, 05:24:45 AM
by Iperfungus

ADA MP-1 Ground hum with good gain

Started by bunkyloo

Replies: 3
Views: 3,050

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

ADA MP-1 v1.36 Switches on! Normal background noise there, but no Output!!!!

Started by Pedro

Replies: 14
Views: 3,602

November 24, 2020, 11:43:50 PM
by rnolan

ADA mp1 - Solid States works only

Started by gg85

Pages1 2 3

Replies: 31
Views: 3,470

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

ADA MP1 - Tube Board Problem and Resolution.

Started by MR THUD

Replies: 2
Views: 2,347

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

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

Started by dbjacobson2112

Replies: 14
Views: 12,012

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

Ah the joys of troubleshooting

Started by Dante

Replies: 14
Views: 8,412

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

B200s hum

Started by duecemfhatchet

Replies: 3
Views: 2,888

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

Bad buzz or rumble on mp-2 high gain modes

Started by h.e.l.shane

Replies: 2
Views: 3,980

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

Bass setting not saving

Started by revhed666

Replies: 14
Views: 7,564

March 31, 2014, 09:51:25 PM
by rnolan

Battery Issue in MP-1

Started by kfowler8

Pages1 2

Replies: 18
Views: 15,238

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

Clicks when switching presets

Started by sadky

Replies: 6
Views: 5,148

October 03, 2014, 05:47:22 AM
by Systematic Chaos

Dialing Down on Signal Cut

Started by Chip Roberts

Replies: 3
Views: 2,040

January 22, 2021, 05:54:36 PM
by Harley Hexxe

error codes

Started by Mike_Revis

Replies: 3
Views: 4,337

March 27, 2014, 03:45:20 PM
by MarshallJMP

Extreme hiss and microphonic V1 tube circuitry

Started by NeverAfter

Pages1 2

Replies: 19
Views: 10,618

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

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

Started by Pork_Chop

Replies: 2
Views: 1,723

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

front panel

Started by kserri

Replies: 3
Views: 4,644

December 03, 2018, 01:11:27 AM
by rnolan