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Temp "Time Format" issue Fix in Discussions

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Author Topic: mp1 classic schematics  (Read 7028 times)

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wolffer0

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mp1 classic schematics
« on: Time Format »

My mp1 classic tubes are not heating up like they should. If I remove one the current is almost enough to make the filiments glow. My voltage is not stable and not enough to get the tubes operating. I traced the power and it originates in the power section being fed by a power transistor with a resistor between them. Then it gets power from somewhere after that. A schematic would help . The mp1 power to the filiments is unregulated 8 volt so different from my setup.
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wolffer0

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Re: mp1 classic schematics
« Reply #1 on: Time Format »

I am hooked on the brown sound that my old jmp1 doesn't have so I need to fix this and they are not to popularge or everyone is keeping theres. $500 on ebay is to much. I ordered the tip31 transistor and the voltage regulators and some new caps for the power section so I can try and fix it in the dark
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rnolan

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Re: mp1 classic schematics
« Reply #2 on: Time Format »

Sounds like an MDRT tranny upgrade may help ? (http://www.marshalljmpmodshop.net/miscellaneous_parts_and_replacement_tubes.htm)
Plenty of schematics here if you look (http://adadepot.com/index.php?topic=148.30), also some good mods for MP1, depending what you want it to do.
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Studio Rig: MP2/MB1 > Eurorack UB2442FX-Pro > TC M-One XL > Behringer Truths (with Truth Sub) / QUAD ESL 63s
Live Rig: MP2/MB1 > Alesis Quadverb > Alesis Midiverb 4 > Yamaha AM802 > B200s/Carvin TS100/DCM200L > ADA Split Stacks/Mesa P112s

MarshallJMP

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Re: mp1 classic schematics
« Reply #3 on: Time Format »

The MDRT doesn't work in the classic.

About your classic,do you get a steady 5V?
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RobbHell

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Re: mp1 classic schematics
« Reply #4 on: Time Format »

All of the MP1 Classic schematics can be downloaded from

www.lydian.ca/ADA_MP1.html
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Dante

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Re: mp1 classic schematics
« Reply #5 on: Time Format »

So, I downloaded all the 'parts' to that multipart archive, but have so far been unsuccessful in extracting the ZIP. Grrrrrrr...

I'll keep scouring the web, it has to be out there somewhere
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ADA Gear: MP-1 Classic | MP-2 | Viper Combo | MicroTube 200 | MicroFet | MXC w/Quad Switch

RobbHell

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Re: mp1 classic schematics
« Reply #6 on: Time Format »

I feel ya bro.. I got four files to open. Main and Tube board component layouts and some notes. I couldnt get the schematic pdf to open.
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Sparker

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Re: mp1 classic schematics
« Reply #7 on: Time Format »

ADA MP1 Classic - 1. Schematics   :metal:
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ADA Gear: MP-1 Tube Board

Sparker

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Re: mp1 classic schematics
« Reply #8 on: Time Format »

ADA MP1 Classic - 1. Assembly & Test   :metal:
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ADA Gear: MP-1 Tube Board

Sparker

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Re: mp1 classic schematics
« Reply #9 on: Time Format »

ADA MP1 Classic - 1. Manual & Settings   :metal:
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ADA Gear: MP-1 Tube Board

Sparker

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Re: mp1 classic schematics
« Reply #10 on: Time Format »

.. and no, I can't count.   :facepalm:
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ADA Gear: MP-1 Tube Board

Dante

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Re: mp1 classic schematics
« Reply #11 on: Time Format »

YYYyeeeeeaahhh! Go Sparker!!

Thanks buddy, I'll get these in their proper spots in the Vault. Woot!!
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ADA Gear: MP-1 Classic | MP-2 | Viper Combo | MicroTube 200 | MicroFet | MXC w/Quad Switch

RobbHell

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Re: mp1 classic schematics
« Reply #12 on: Time Format »

Hellz Yea!
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RobbHell

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Re: mp1 classic schematics
« Reply #13 on: Time Format »

Wow what a mess of shit on that Tube Board lol. IC's  everywhere.
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Dante

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Re: mp1 classic schematics
« Reply #14 on: Time Format »

What's an IC?

Integrated Circuitboard? Iced Cucumbers? Ineligible Coupons? Ignorant Concubines? I could keep going...


UPDATE: The Vault has been updated to include all the stuff Sparker sent. Thank You SPARKER!!  :banana-trip: :banana-dance: O0 :metal: :banana-rock: :banana-guitar: :poop: :ada-big: :cheers:
« Last Edit: Time Format by Dante »
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ADA Gear: MP-1 Classic | MP-2 | Viper Combo | MicroTube 200 | MicroFet | MXC w/Quad Switch
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