Question about Yamaha DSP-AX1 10-Channel Amplifier

2 Answers

AX1 wont power-up.

The AX1 always goes into protect mode after not being used for 2 days and wont switch on.

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  • bitsmart Aug 13, 2008

    My Yamah DSPAX1 working fine for years just trips after a few minutes of turning it on. Sometimes it plays for 3-4 minutes and then switches off. The same thing happens even after removing all speaker/input/output wires. Any suggestions ?

  • Anonymous Mar 30, 2009

    Everythings fine if I play it everyday AND with the ac socket on the wall MUST switch to 'power on'. If I unplug the AC socket on the wall for 1-2 days, it won't power-up after I plug in the socket and try to power-up by pressing the 'POWER' knob on the AX-1. And it wont power-up too, if I don't play it for 3-4 days, although with the AC socket pluged and switch to 'power on'! Why, what is the problem?

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Just remove the speakers first and try to turn on.. let us know what happens without the speakers.

reden

Posted on Mar 19, 2008

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Hello amos78

First, perform a visual inspection at the back of the unit and verify that speaker wires are not loose or shorting out with another connection. Find the impedance selector switch and verify that it is set to the proper position according to your speakers' impedance. It has to be all the way up or down, never in the middle. (Warning: Do not move the impedance selector while the receiver is powered. Make sure power is OFF on in standby, otherwise receiver will be damaged). Try power ON.

If these actions do not cure the problem, disconnect all speakers and try power ON again.
If the unit powers on, it is possible that one or more of your speakers or wires are damaged.
If none of the above actions fixes the problem, it is very possible that the receiver's internal circuitry is damaged.

Hope this helps you. Let me know.

cancerags

Posted on Dec 29, 2007

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1 Answer

Yamaha DSP-AX1 ,. When turning on it only stays on about 4-5 sec. then shut off. Bob


Is this new equipment or a new problem on working equipment?


Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Yamaha-DSP-AX1-Amps-manual/id/319bh827/t/2/

See Troubleshooting Page 79

Impedance Selector in between settings

Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Apr 07, 2011 | Yamaha DSP-AX1 10-Channel Amplifier

1 Answer

Fails to switch on but a clicking noise is heard when power button is pressed.


Sounds like the protection relay for the speakers constantly activating,indicating either a short circuit or high bias current on the amp power supply. A qualified tech would be able to say easily with the right gear

Jan 02, 2011 | Yamaha DSP-AX1 10-Channel Amplifier

1 Answer

Hi my amp when i switch it on within 3 seconds it automatically switches off?


HI...
That's the protect circuit kicking in.
The rec'r will require service. Either a couple of power supply capacitors have gone bad or one of the power amp modules has quit.

Nov 02, 2010 | Yamaha DSP-AX1 10-Channel Amplifier

2 Answers

My yamaha DSP AX1 amp does not work when audio is connected via optical or coaxial any suggestions how to correct this. no sound comes from any speaker except the subwoofer.


Are all the speakers turned off (set to None) in the speaker menu.(except the sub)?

2 channel direct analog stereo may still work, but any surround modes will use the speaker settings and the full DSP digital section.

Check also the input mode isn't incorrect - although if the sub is wired correctly and gives sound this can't be whats wrong.

Aug 26, 2010 | Yamaha DSP-AX1 10-Channel Amplifier

1 Answer

One day it just went to protect and wont come off no matter what i do.


Hello sobe54,

Disconnect everything except ground, power, and remote.

If the amp still goes into protect mode when powered on, the amp itself is defective.

Hope this helps.

Oct 06, 2009 | Car Audio & Video

1 Answer

Television stays in standby and won't switch on, just a high pitched sound


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

May 20, 2009 | Toshiba Televison & Video

2 Answers

Aplifier gettieng protection signal and excess heat


for that amplifier, it is recommended that you are driving a 4 ohm load. It can drive a 2 ohm load, but will produce more heat and shorten the life of the amplifier. Is the subwoofer a single or dual voice coil? You'll want to make sure that you're not running below a 2 ohm load or you'll always go into protection. Also, try disconnecting the speaker wire completely from the amp so nothing but power is connected. If the amplifier is still in protection mode when no speakers are hooked up, then the amp is bad and will need repair or replacement.

Sep 28, 2008 | Autotek Car Audio & Video

3 Answers

Need a users guide (instructions)


For Cellular Innovations Mini Blue HFBLU-AX1C.
To Pair with Your Phone....

1. Turn OFF Bluetooth Headset
2. With Headset within 1 Ft of your phone, hold down power key for about 8 seconds until indicator light blinks in red and blue color quickly (in pairing mode)
3. Search bluetooth device through your mobile phone.
4. Select HFBLU-AX1C in the bluetooth device list and enter the password 1234.

Jun 12, 2008 | Cellular Innovations HFBLU-AX1 Bluetooth...

2 Answers

My amp wont go past protect mode


Disconnect all speaker wires and signal cables from the amp. If it powers up (no protect light), the wiring needs to be checked. If it still shuts down (goes into protect), the amp likely has blown output transistors.

Dec 01, 2006 | Lanzar Vibe 218 Car Audio Amplifier

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