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Problem with philips Powerhouse AW626 music System

My left channel consisiting of speaker and tweeter doesn't work but my right channel works properly and sometimes it works properly and the next day the distortion starts coming in the left channel

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Try to invert your speakers cables and connect your right speaker cable to left output if the problem still happened you will have a problem in your amp and ask for help from good service center near you-------if the problem disappear you will have a problem in left channel----cable or speaker.

Posted on Aug 02, 2008

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1 Answer

Sansui AU-D33 Lh speaker channel not working.


As the channels are identical you can use the good channel has a guide to the bad one. First thing is to look around see if anything does not look the same as the right channel.

If nothing obvious stands out, with the power on, using an insulated screwdriver touch the two channels one at a time. Keep away from the power supply and anything that is common to both channels. The channel will buzz once touched. Depending which points you touch them. The right channel will tell you if it should buzz at that point. Work backwards from the speaker outputs if you can. If you hear a buzz on the left channel then it is working at that point, if it produces the same sound on the right.
Using this method you should track down the part that has gone.

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Getting the connections right is a problem. One thing I find helps is the THX DVD discs that certain movies have on them. They have a sound set up to get it right. It makes a tone for each channel so you can hear which channel is working. It should help you set up the system right and determine if any channel has a fault on it.

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Check both your input(rca) and output connections on the inside of the amp for any looseness or damage, solder connections and so forth.. However I think your power/output transistor(s) are burnt in the left channel

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1 Answer

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Stereo amps are two mono amps put together. So if you have a bad channel then you also have a good channel to compare it with. I suspect you have a faulty transistor. You can test it by proding the channels with a pen or your finger - touching plastic only parts. The two channels should buzz. If buzzs in the left then if you touch it in the right it should do the same. An alteration or change in the sound in the right and you have found the faulty part.
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1 Answer

My speakers stopped working


Heating of the power transistor

can be one of the causes.

you may have to take out the complimentary pairs to check.

The pair may take out the drivers and some components along with it.


These may take some time, (troubleshooting)

But have a tech to guide you, if you need to DIY.

Good luck, let us know what you find or needs further assistance.

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Hello
Check the speaker of the right side first for damage. Connect it to left side and listen whether it works or not. If it works with left side, make sure that the audio output section circuit to the left side inside your amp has damaged and should be replaced. If the speker does not works with connecting it to the right side, make sure that the speaker has damaged. OK.

Dec 23, 2011 | Amplifiers & Preamps

1 Answer

I have a Technics SU-G70 Amplifier with a problem. Overall, it works fine except for a speaker issue. When turned on, the Left speaker output on the monitor is lit up from 0 to 120. Just below, the...


Sir the problem of your unit is the power IC the other channel of this IC is already faulty. unplug the unit to the main AC outlet then remove the cover of your unit you will see a large aluminum plate the power IC is attach to that heat sink in order to fix this you should replace the IC. Or can you give me the part number of the IC so I can determine the pin configuration. Good day and best regards.

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1 Answer

Hi my amp left channel does not work. the speaker relee works at both channels and the amp works fine at the right side.it goes not in protect what do u think is wrong ?


It could be a number of things. Try this test first though. Play some music and swing the balance control to the bad channel and turn up the volume all the way if needs be. If you hear any music breaking in the pre-amp is ok. If not it could be dead. Again if you hear faint music it's the power amp that's not working.

Next have a look inside. You should be able to identify the channels by following the wires from the speakers. Remember that stereo amps are just two mono amps joined. So the Right Channel will act as a guide to what the left should look like. Plus if you are any good with a volt meter provide the correct voltage indications. Any burnt/damaged parts on the left and not on the right is an indication of the fault area. If you have no output from the above test pay close attention to those parts on the heat-sink for the affected channel.
Ignore the power supply parts are anything that is on it's own, unless it's an IC with both channels going into it. As they can go faulty on one channel, but not the other sometimes.
If you can't find anything it might be an idea to replace the left output device(s).

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1 Answer

I have a faulty speaker will it damage my new 2 chanel amp


Yes it is important that the speakers you are connecting to the new amplifier is working good and having equal impedance inthe left and right channels. hence if you are confimed that the speakerr is faulty first of all replace the speaker or the speaker coils and diaphragm before you connect to the amplifier to be powered. Please also check if the network has any damage before taking an impedance check. This should be identtical to both the channels. If so you are ready to use your new amplifier. Hope this helps to guide you. Good day

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1 Answer

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