Question about Sony TA-N9000ES 5-Channel Amplifier

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No sound Sony Stereo Model HCD G5500 will turn on but no sound. Speakers work-I tested on other unit. I have back off-nothing appears to be disconnected or melted. What else can I look for?

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When the amplifier will turn on but not produce any sound that is usually an indication of either the high voltage power supply inside the amplifier is not working, or the amplifier IC or amplifier circuit is damaged. It is not something that can be repaired unless you have experience working on electronics.

Posted on Jan 04, 2009

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I only have left channel on speakers working have tested speakers ok, swapped pre amp boards still one channel, swapped output boards the same. What could it be? Barry


is there Sound stage output is stereo if stereo then one side is missing or broken link from ic to speaker, If mono output then use with one side 2 speaker parallel.

May 20, 2015 | Amplifiers & Preamps

1 Answer

I have a Sony Amplifier [model TA-AX380] and other components of CD player [model DCP-C40], AM/FM Tuner [model ST-JX380], FM Stereo/FM-AM Receiver [model STR-AV570X], and Stereo Cassette Deck [model...


http://www.servicemanuals.net/ServiceManual/SONY/TAAX380/148547/detail.aspx
http://www.hifiengine.com/manuals/sony/str-av570x.shtml
Hi above are links for manuals, these may help..
When one wires up anything it is all usually color to color output to input... usually RED & WHITE stereo audio.
Now we would start with our Tuner this the CD player, & Cassette deck, will wire into the Amp's INPUTs , red - red & white - white, these go into the Stereo INPUTs on the AMP... 1, 2 & 3 and be selected via the input selector on the AMP.
Now after all these in's and out's are wired we need to wire our speakers, this too is simple, locate the outputs on the Amp, and wire accordingly, Plus to Plus and Negative to Negative... each speaker has two wires a Plus, + & a Negative -
All will/should be clearly marked and it will be easy to do. You will need patch leads, one set each for each unit, these will be a pair of cables, usually Red & White with RCA jacks on each end, as related these go color to color from the RCA OUTPUTs Sockets, of the signal suppliers, ie: Tuner, FM stereo & Cassette deck... these ALL will wire into the Main Amplifiers INPUTS, usually at rear of unit, and clearly marked, after this is all done, then as related again now connect the Speakers, again the OUTPUT on the Amp will be clearly marked, as output and + & -, + & - (two sets), one for each channel.
Now each INPUT is selected ON the AMP, and it's output will then be directed to the speakers attached to the Amp..... Just wire and test one at a time, and i am sure you will prevail.
Hope this helps.

Jun 20, 2011 | Sony Amplifiers & Preamps

2 Answers

I forgot how the connection of speaker to speaker was done. is it + + and - - or + -?


Hi,
Actually here is some theory on the subject. Let's use a stereo system with only two front speakers. One left and one right. On the back of the Amplifier ( free standing "Preamps" don't have speaker connections) there are speaker outputs. Black represents minus (-) and Red represents plus (+). On the back of the speaker systems. The same thing applies. If your connections are consistent i.e. black to black and red to red. Then the speaker components will be physically moving in and out and the exact same instant. Their motions will be synchronized. The term for this is (IN PHASE)

If one of the speakers has the cables reversed, then the speaker will not sound as good. The reason being is that one speaker will be moving in while the other speaker will be moving out. They will not be in synchronization. This will create an (OUT OF PHASE) condition. This causes what is called
PHASE CANCELLATION. What occurs in phase cancellation is that some of the sound is canceled out and the low notes are almost completely canceled out. There will be almost no bass at all. When this happens people turn up the bass full and nothing happens.The speakers individually working much harder. In the case of phase cancellation, if you have the bass turned up and disconnect one of the two speakers, the bass notes get much louder.
Higher frequencies also are adversely affected they will become more mushy sounding.
I hope this helps you.
Best Regards,
Mark

Jan 20, 2011 | Amplifiers & Preamps

1 Answer

Stereo amplifier shutdown.


  • The amplifier is showing the protect mainly due to a safety feature on the power circuit. The fault could be failure or short in the output stages, short in the speakers, fault in the power ciicuit or the error amplifier that triggers the relay.
  • To trace the fault it is impotant to make the test in the main board, disconnect the power to output to confirm if the output is faulty. similarily disconnect the powering circuit one by one to identify. replace or disconnect to confirm. Hope this helps. Good day

Jul 11, 2010 | Sony Amplifiers & Preamps

1 Answer

Cant figure out why my protect LED indicators continue to go on.. Why is this happening?


disconnect speakers at the amp, turn unit on, if it goes into protect, it needs service. If it stays on, re-connect speaker wires without speakers attatched at the other side and test again. (make sure wires are separated and not touching metal!) if it stays on still, check speakers one by one, when it goes into protection, you have found your problem. Disconnect the bad speaker and test again. Process of elimination. It can only be one of three things. Internal amp problem(nothing connected and protection) wires(no speakers connected and protection) or speaker(s) (when speaker connected,protection) Hope this helps. If you need deeper troubleshooting with this issue, post a comment and I can help you further.

Nov 04, 2009 | Nady Systems XA-900 Amplifier

3 Answers

Tecnics SU-G95 stereo overloaded


Power down,disconnect the speakers and power back up. If it still say's overload, it needs to go to service. If not, check your wires, connections, and speakers one by one to hunt down the problem and correct. Hope this helps

May 25, 2009 | Technics SUV500 2-Channel Amplifier

1 Answer

Sony stereo model HCD G5500 will turn on but no sound comes from speakers. I tested speakers on other unit and they work. I have the back off. Nothing appears to be melted or disconnected. What else can I...


Check fuse in plug check onboard fuses if all good look for black or blue or ornge little rectangular boxes(relays) should click if not then protection problem and needs to be serviced

Dec 30, 2008 | Sony TA-N9000ES 5-Channel Amplifier

1 Answer

Sony Model No STR-DE475 blinks "PROTECT" even with no speakers


With all speaker wires disconnected and still showing the protect message, the short is internal. This is a rather common failure for these units. The output transistors are shorted themselves. These are relatively simple to replace and run about $15 each. Any service shop that repairs audio can fix this easily. Usually, once the outputs are replaced, you can get many additional years of service from the unit. Yes, it is worth it (in my opinion).

Dan

Dec 01, 2008 | Sony Amplifiers & Preamps

2 Answers

Technics su g70 amp problem also?


it doesn't sound like it. but maybe. it would be the input section of your amp that blew if it did go. try replacing your speaker wire first, if that doesn't work then your volume knob(if the volume is analogue) may need to be replaced. if that doesn't work. then you may have blown the amp. what source are you testing with?(cdplayer, dvd player, etc.) and what inputs are you using? (analogue, digital optical, digital coax)

Aug 11, 2008 | Amplifiers & Preamps

3 Answers

Str-D590


This is not a reset. Most likely one or more transistors have shorted and need to be replaced. Does the front display come on OK?
Dan

Apr 29, 2008 | Amplifiers & Preamps

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