Question about M-Audio Axiom 49 mkII 49Key USB MIDI Keyboard Controller

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I bought a 12 volt DC adapter but still can't seem to get any power to my Axiom 49---I came by this key board with no cords attachments or directions------curious is it dead or do I need other cords to see if this thing works .It is in great shape ,looks new but I plug it in and I can't get a bleep or see a light.Should I toss it or is there other parts I need befor it fires itself up with a little life.

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  • M-Audio Master
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Make sure the adapter has the center pin as positive and is at least 500ma at 12 volts DC.

Posted on Mar 28, 2011

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Posted on Jan 02, 2017

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Does my Casio g-200 keyboard have a fuse ? If so what type and where is it ?


I'd go exchange the power supply for the correct one (check the voltage, polarity and mA rating that's marked next to the power input). It may be too late, though.
There will be a fuse on the internal power input board, as well as one in the power supply, but if the instrument is turning on and lighting up, it's not a blown fuse.

Jun 29, 2016 | Casio Wk-200 Wk200 76-key Digital Personal...

1 Answer

My Axiom 49 won't turn on or light up. It was just working yesterday. How do I get it working again?


The cable could be bad. Try another cable. USB port problems are also common with M-Audio.

If that doesn't work, try using a 12v adapter to power it on.

Just make sure you don't use both USB and the power adapter at the same time, or you can fry the board.

If it powers on with the adapter then it's an USB issue. If it doesn't, then it's something else.

Apr 09, 2015 | M-Audio Axiom 49 49-Key Semi-Weighted USB...

2 Answers

How to fix loose usb on Axiom 49 keyboard


Wow...just loose or intermittent as well? Most of these jacks and connectors are directly soldered to the main circuit boards which could mean broken and/or intermittent connection. Check your warranty status but if expired...to resolder check for a local electronics repair shop to help as the disassembly and intricate work may be beyond many DIY fans.

Jul 30, 2014 | M-Audio Axiom 49 49-Key Semi-Weighted USB...

1 Answer

Axiom 49 not detected by reason 5


Open preferences. Go to Control Surface tab.
Click Add. Select M-Audio as manufacturer.
Choose Axiom 49

Make sure the ports are set right.

Controls IN Port = Axiom 49 Hypercontrol In
Keyboard Port = Axiom 49 USB A In
Controls OUT Port = Axiom 49 Hypercontrol Out

if it hasn't detected yet then restart Reason.
Make sure the power on the Axiom is on.
If you still have issues the USB port on the Axiom could be bad.

Oct 01, 2017 | M-Audio Axiom 49 49-Key Semi-Weighted USB...

2 Answers

My P85 simply won't turn on. I have tried two different adaptors. Neither work yet they are functioning with other keys. Please help. I have a gig on Sunday


What adapters have you tried? The P85 REQUIRES a 12 VAC adapter, NOT the common DC type and it needs a 1.5 amp (1500 ma) type adapter. If you connected a DC adapter it will NOT do damage, the unit just won't work. You can find adpaters on Ebay or Google search.

Aug 26, 2011 | Yamaha P85 88Key Portable Digital Piano

1 Answer

Yamaha psr-280 flashing display no key response or sound. Is it dead??


Your adapter should be a 12 volt DC delivering 2 amps (2000 ma). If the adapter is too small, you will have the symptoms you are seeing. Make sure the polarity is correct. DO NOT use the so called "universal adapters".

Apr 13, 2011 | HQRP AC Adapter / Power Supply for Yamaha...

1 Answer

My axiom 61 dont want to work anymore but it comes on says something about my usb connection


Where do you see the error about USB, on the Axiom display or on your computer? Can you give me the exact error? Is the Axiom connected directly into the computer or into a USB hub? (My Axiom 49 only works connected directly) Try restarting both the computer AND the Axiom with ONLY the Axiom plugged in.

Feb 21, 2011 | M-Audio Axiom Pro 61 Advanced 61-Key USB...

1 Answer

I'm attempting to connect my new axiom pro 61 via Midi cables to my mbox2. To do this I understand I must rely on the power supply rather than USB. When plugging the axiom in to the wall it will not turn...


The AXIOM SHOULD turn on with just the wall wart adapter so you HAVE A PROBLEM.

First thing is to check the adapter that it is the correct one. It should be a 12 VDC 1 amp unit with positive center pin output.

Common adapters for pedals WILL NOT WORK.

Assuming you have the correct adapter, VERIFY the connector is plugged fully in the AXIOM.

Feb 09, 2011 | M-Audio Axiom Pro 61 USB Keyboard + Sp2...

1 Answer

I have Yamaha psr 260 and I am connect on 24V, and now speakers dont work. What am I doing?


I believe that is the wrong VOLTAGE !!!

The PSR takes a 12 volt, 1 amp or more DC power supply with positive on the pin.

If you have connected 24 volts either AC or DC of either polarity you have likely caused internal damage. Try a 12 volt DC supply and if it doesn't work, it needs to go to a repair facility.

ALWAYS check the voltage and the polarity on ANY of the devices using the power adapters BEFORE connecting the adapter..

Feb 18, 2010 | Yamaha Music

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