Question about Fender Music

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Acoustasonic sfx I've had mine for several years, never had any issues with it. Turned it on and it won't do anything, power is plugged in, but no lights or sound. The only thing is what sounds like a faint humming sound coming from the top of the cabinet. It's way beyond warranty, but I'd like to get it fixed if not to expensive to fix. Cheers, David david@savedge-music.com

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  • 78 Answers

Have you checked the fuse in back?

Posted on Apr 20, 2014


6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 4234 Answers

SOURCE: something has blown?

The output transistors may have shorted and caused a resistor to smoke (literally!!). This should not be too expensive a repair for anyone that works on these amps. Figure on $20-$30 for parts.

Dan

Posted on Feb 23, 2009

  • 1 Answer

SOURCE: The 'protect light' comes on Fender PD150 Portable Sound System

The protect circuit is activated by a current sensing transformer in the *input* of the power supply. If any of the subassemblies of the unit (or all of them in combination) draw excess current then the protect light will illuminate and the power supply shut down to prevent any damage to the system.

The circuitry in the power supply is fairly robust as well as fuse protected so it is unlikely that the power supply itself has failed. More than likely one of your output power transistors has been shorted and it is easy to check this yourself if you are interested in doing so.

Furthermore if you follow a few *simple* precautions you can do this safely and confidently.

Post again on this thread if you are interested and I will spew the details.

-BK

Posted on Mar 14, 2009

soundchasr
  • 8 Answers

SOURCE: NO sound through the AMP even though the power light comes on

Not a fuse. First thing, to check your speaker (amp unplugged, of course), touch the + and - speaker connections to a 9V battery. If you don't hear a pop sound then your speaker is blown. Thus, no output sound. If speaker is OK, then the output IC is your problem.

Posted on Jul 25, 2009

  • 5603 Answers

SOURCE: Lexicon alpha interface is recording a faint high pitched sound

Check for ground loops.

You MIGHT be able to cut the noise by setting the EQ's to clip the highs.

Posted on Aug 24, 2009

  • 5603 Answers

SOURCE: My casio ct670 ToneBank keyboard isn't making much sound

Check that you don't have old batteries in the unit. Also that the auto power down is not activated.

If using a power adapter make sure it is the RIGHT one, both in polarity and current rating.

Posted on Sep 22, 2009

Testimonial: "Sorta helpful. How do I check for auto power down activation? Thanks for responding so soon. I'm not using batteries and used the original ac adapter."

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It works sometimes but mostly never. The power is on and the screen is blank.


For anyone who still has this issue including above morris_gray,
I've encountered this myself with my first generation M-Audio Axiom 25 USB MIDI Controller plugged into a MacBook using GarageBand (G2 apparently has identical malfunction).
It should be noted that I never installed any type of software for the device, that came with the device. I simply wanted a controller for GarageBand, and I will also note that it has worked flawlessly for about 4 years on this setup, until about a week ago...

I'll provide what information I have gathered about the blank LCD screen issue as well as the controller simply not functioning correctly as listed below:
The most common way people test/fix this is to "hard reset":
- turn controller off (assuming you've kept the usb cable connected to your computer)
- hold down both the + and - buttons directly below the lcd, and simply turn the power on. Some numbers should appear on the lcd soon after the reboot and you are okay to release said buttons...
I've read testimonials, watched videos of people doing this and successfully getting their device back in action, though the reset will default anything you have saved for the device.

Sadly, this did not work on mine. I've tried several different cables- in several different usb ports- on several different computers (as suggested by M-Audio on their support page. I still get a lit up but blank lcd. I've even tried to still use it but only some awful noises come out and nearly every function just makes the thing freak out and it becomes silent/unusable/useless.
M-Audio suggests sending it back to them for fixing at this point.
Because I've had my Axiom 25 Gen. 1 for so long and I have never installed anything what so ever that came in the box, and have little faith that M-Audio will replace mine, I will most likely try to take it apart and mess around with the electronics inside as it's just a big paperweight now.
I did read that in the Gen. 1's the blank lcd could be a result of a chip gone wrong, so to speak... Gen. 2's had some type of "grounding" issue that resulted in the blank lcd and such.
I hope this helps anyone, if I stumble upon a way to fix this through my own curiosity I will inform the masses...
I'll be on the hunt for a new controller most likely and it probably wont be an M-Audio...not that I'm upset with the product, it lasted me quite a while and I've made a lot of solid songs/music with it, but rather I feel the need for something different and maybe a little more sturdy that can actually be a synthesizer on its own, not just a controller.
- Christoffer

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