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Yamaha AX-930 Audio Amplifier

Hello Big Red,
I think it's the speaker protection circuit coming on and off on the second channel. I swapped speaker channels after the first channel gave up. Before it died it started to take a long time for it to click in.
Cheers,
Pedo.

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HI...

Do a websearch for a competent repair shop in your region or ask the stereo folks where you got the amp.
It WILL need surgery.

Cheers,

Scott

Posted on Jan 03, 2009

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1 Answer

No sound coming out on any channel


I would also guess you have a flashing indicator, correct? If you do, your amplifier has DC Offset(a damaged amplifier). If this is the case, the protection circuit will not allow audio on any channel.
If you are interested in having your Yamaha repaired, please look at my website, audioserviceclinic.com. You may contact me there. Thank you.

Jul 13, 2015 | Yamaha DSP-A1000 5-Channel Amplifier

1 Answer

My amp keeps cutting out


If your ampliffier is cutting off even when it is not playing music or without load, it is possible that some errors are on in the protect circuit. Look for possible fault in capacitorrs in this circuit. If not the powering of the outputs can cause the intermittent failure due to overloading. So check you speakers, your speaker connections and also your main power inlets. Check for any spark marks on the plug top, if so use an emery paper to clean. Still if the fault is persisting then you will need som help to probe into the main board . Tap into the board for the fault to come up , in this case there could be dry points in the board. Look carefully into the boarrd and solder all suspect joints. Otherwwise you will need a good check on the cut off error amp, disconnect power amp and check. isolate and confirm the section in fault. Hope you try. Good day

Aug 01, 2010 | Yamaha AX-496 2-Channel Amplifier

1 Answer

My Yamaha YHT-791BL amplifier goes off every time I turn it on. How can I fix it?


hello,
Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Its usually not a fault that you will see unless somethings burnt up. This is solid state electronics and you dont see this stuff go bad. But in the meantime try disconnecting the speakers and see if it still goes into shutdown and at the same time have a dc multimeter attached to the speaker outputs. If the unit comes on and you dont see any DC at all or very very little B+ on both speaker terminal sets then you may have a defective speaker. If you do see dc then thats why the protections comming on so you dont blow out your speakers.
Also check for cracked solder connection.
Good Luck

May 26, 2010 | Yamaha AX-596 Amplifier

1 Answer

Hello i was wanting to know if i could hook up my AX-596 amplifier to my Yamaha HTR-5860 reciver


I assume you want to slave it to the receiver and drive some more speakers with it.

Connect some RCA cables from whichever channel pre-outs you want on the HTR-5860 to any input on the AX-596.

Set the AX volume to something sufficiently high, run through the HTR's speaker level setup and match the AX volume to match the channels on the receiver. Then leave the AX's volume alone.
---

If you just want the AX to have access to program sources of the HTR, run the RCA cables to it from one of the VCR1 or 2 Out (but DO NOT select whichever one you use via the front panel). These are not affected by the HTR's volume controls.

May 07, 2010 | Yamaha AX-596 Amplifier

1 Answer

I have cambridge audio azur 640a amp. Problem I have is only the one speaker is working. Both speakers seem to be ok working off the left speaker terminal. Seems to be problem with output from right...


The fault is on the amp! It sounds like the protection circuit is detecting a surge on the channel and shuts it down to protect the speaker. I would check the semiconductor device(s) for the right channel on the heatsink of the amp. You might even see damage of burning on one!

Dec 29, 2009 | Cambridge Audio Azur 640A Amplifier

1 Answer

Audio thump on changing any parameter


My bet is a faulty electrolytic capacitor! Don't know which. but would look around the circuit of those stages.

May 30, 2009 | Yamaha DSP-AX1 10-Channel Amplifier

1 Answer

Convert passive speaker to active


You don't say anything about your passive speaker, only thing that I understand you have a Yamaha AX-396 witch have an Power output of 60 watts per channel into 8 ohms (stereo)! That means working great with your passive speaker!!!

Apr 27, 2009 | Yamaha AX-396 Amplifier

1 Answer

I have a yamaha amplifier in here for repairs, the model no is A500, i cannot get the speaker protect relay to come on, i have replaced all the transistors & capacitors in the speaker protet circuit to no...


Measure DC to ground on the output transistors to check for any offset. The protect circuit is the least likely to be the problem. Post the readings here and I'll guide you from there.

Dan

Mar 11, 2009 | Yamaha XS-350 2-Channel Amplifier

2 Answers

Sonamp 260 cuts out


Normally this denotes a protect condition. Remove the speaker wires from the back of the amp and see if the green light stays on. If this fixes the problem, then there is a short circuit in your wires, speaker level volume control or speakers. The amp sees the short and goes into protect. After a couple seconds it closes the connection again and if the short is still present it goes back into protect.

Aug 03, 2008 | Sonance Sonamp 260 MKII 2-Channel...

1 Answer

Matching book shelf speakers for yamaha ax 596 amplifier


just click to choose;

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hope this may help;

Regards,
VOTIT

Jul 27, 2008 | Yamaha AX-596 Amplifier

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