Question about Yamaha DSP-AX1 10-Channel Amplifier

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Yamaha DSP-AX1 ,. When turning on it only stays on about 4-5 sec. then shut off. In service mode works, I suppose that problem is in protect section, anyone can help?

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Check the output transistors for leak.

Posted on Dec 30, 2013

Testimonial: "As I wrote describing the problem, amlifier works in serwice mode, output transistors are ok. No input and speaker cable not conneced, only power supply cord."

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SOURCE: Yamaha DSP-AX1 ,. When turning

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.

Posted on Apr 07, 2011

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1 Answer

I have a Yamaha dsp ax1 when I turn the volume up the amplifier cuts out


Generally speaking, an amp attempts to protect 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 'nekkid'. 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.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

Aug 16, 2011 | Yamaha DSP-AX1 10-Channel Amplifier

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

Amp turns of after 2 seconds of turning on


It is going into protection mode, and shutting itself off. You have a short somewhere. I would suggest taking it to an authorized service center for assistance. This is not easy to diagnose, as it could be anything causing the short.

Try disconnecting everything from the unit, including the speakers, and turning on again. This will just confirm that the problem is the amp, and nothing external. Also, try connecting it to a different power supply/socket.

- OPTiC
Master Tech
Digital Analog Therapy
Yamaha Parts : Electronics Repair

Aug 29, 2009 | Yamaha DSP-A2 Receiver

1 Answer

Just bought refirb. Onkyo 805, hooked up front l&r plus sub and getting no sound. I set up am and fm as per manual and connected a cd changer thru the cd in via rca cables. Radio shows a signal but no...


After few sec when you turn on your receiver did you hear a click noise ? if yes your receiver is OK not in protection mode if no click noise is output protection in that case you must return where did you buy for service and update firmware a lot of update
However you can reset your receiver and debug the DSP section ( digital signal processor ) as follow
To reset
1. Press and hold down VCR/DVR button, then press STANDBY/ON button when the unit is Power on.
2. After " Clear " is displayed, the preset memory and each mode stored in the memory are initialized and will
return to the factory settings, and turn to Standby mode.
Now turn back on and check if it work or not and make sure check input mode such as analog or coaxial or optical input if stil no sound then debug DSP as follow
To set in DSP debug mode
1. Press and hold down DISPLAY button, then press STANDBY/ON button while the unit is powered ON.
The version number of m icroprocessor is displayed only for 3 seconds.
Main:
8 1.05/07903A
2. Press TONE+ button within 3 seconds above, the version number of 1st DSP is displayed.
DSP 1st:
SR8051:07601A
3. Press DISPLAY button while the 1st DSP version is displayed. The status of DSP and DIR will be displayed.
E1A48K0N/0FFPo
FFFFFF0 0 000
To exit
Press STANDBY/ON button.
Then unplug the unit for 30 sec then plug in it should work now if not you need to return it to 1 of the service center Onkyo in your town to repair it
Good luck

Nov 30, 2008 | Onkyo Audio Players & Recorders

1 Answer

Dsp a1000 shutting off


it's not actually a problem my friend. it could be a problem with the output circuitry and your protection mode is activated. there ar ecases that systems shuts off with no appraent reason and those are isolated cases. If that were so on your units, the problem lies in the systems board (CPU) a defect in the backup power supply. also grounding problem of capacitor leaks. if there is no trouble in the power amp section and works well suddenly trips, some modifications can be done. i dont know if that can be solved by your technical experts on how to modify the protection circuit. the principle on protection circuits of yamaha is just one and same. but newer models has got better but sensitive designs. 2095 is about 3years younger than a1000. 2095 is almost all digital when a1000 uses mechanical switches.

Apr 26, 2008 | Yamaha DSP-A1000 5-Channel Amplifier

2 Answers

AX1 wont power-up.


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

Dec 27, 2007 | Yamaha DSP-AX1 10-Channel Amplifier

1 Answer

No sound


does the speaker relays work?

Aug 19, 2007 | Yamaha DSP-AX1 10-Channel Amplifier

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