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I think my IC is Blown

What do i do because there is no sound coming out from any of the speakers and its not the wiring either

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  • Roadster Z3 May 31, 2008

    i bought a car with the pioneer deh-1500 installed. it turns on and all the functions are working but there is no sound coming out from the speakers. even a hissing sound. please help. thanks in advance.

  • Dakiddd777 Jul 06, 2008

    My cd player turns on but no sound will come out of the speakers and it not the wires

  • Anonymous Aug 01, 2008

    Same problem on a JVC KD-AR260 worked fine last time I used it but now no sound. All wiring checks ok.

  • curryc_06 Dec 09, 2008

    i hit a bump in the road and sound stop comin out of my speakers but everything else works



2 Answers

I had the same problem until a radio install tech told me to hook up the blue and white stripe wire. This turns on the audio amp.It works great now.

Posted on Jun 01, 2008

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Hi Jrb10dl

A quick way to tell is to measure the voltage on each speaker wire. If it is a High Power unit, you should have approx 6-7 volts on each speaker wire. If not, then the chip is definatly blown.
Chances are high with no sound that it is blown, unless it is a Pioneer, they have voltage sense circuits that will mute audio if all power supply rails are not present. Change it and see is the best approach. Any questions you may have I am happy to answer. I have worked on this sort of gear for years. A FixYa rating would be awesome


Posted on May 08, 2008

  • Graeme Ross
    Graeme Ross Jun 05, 2008

    Hi Roadster

    Pioneer units need all power supply rails present before the internal circuitry of the unit alloows power to be turned on to the output stages. Check that you have ALL required power connections to the unit. mem, access power and constant power.




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1 Answer

TV has no sound


You haven's specified nothing about the picture. Picture is Ok and there is no sound I thinks and posts this solution

Either your TVs speaker or its sound out put ic has damaged. To check it and conifrm you just do this first. There is a stero headphone socket on the front panel of your TV. Insert a headphone pin inot it and listen whether there is sound output come ffrom it or not. If there is sound output from the headphone socket, and not from the speaker, be sure taht the speaker is out.
If there is no sound output from the headphone socet, wither your TVs sound output ic is damaged or it doesn't get proper voltage to go on. It is very easy to locate this IC, as speaker wire goes directly to this section. Just follow the speaker wire and locate the IC, usually screwed on to a metal heatsink. Check its input voltage. If there is no voltage to that IC, check the track associated with that pin. If there is voltages and still not works. first resolder all the pins of that IC by applying a little more solder, whout shorting the adjecent terminals. If this does not helps, replace that IC with same type and number. OK.

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if the loose speaker wire touched ground it may have blown the output ic. also make sure you have no other loose or shorted wires as this will cause the output not to work.

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I recently bought a 1994 Camaro with a Kenwood KRC 953 stereo in it. The radio display is working but no sound at all is coming out of the speakers. What is the problem?

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first double check that you have all speakers connected right and that you don't have a speaker wire that may have an exposed area that could be shorting against the car chassis.

You can check the speakers by disconnecting them one at a time and see if the sound returns to the remaining speakers that are still connected. After checking one speaker, re-connect it and try another.

If the sound returns after dis-connecting one speaker, that speaker is your problem.

If none of this helps, you will need to get it serviced. If you are skilled with soldering and can dis-assemble and then properly re-assemble a radio, this is a very easy fix and I can look up the part number for you of the amp IC. it is also right on the IC itself. If the amp IC is blown up badly, you will see burn markes on it and sometimes a piece of it can be blown right off of it. In that case you will not be able to read the part number.

Normal repair cost for this type of a problem run between $80 and $120 at most shops, depending on the shops rates.

This is a very high end cassette player and in it's day cost about $400 back in 1997 when it came out. But todays car stereos are nearly as good built, and cost much less.

You can get a good car stereo with CD for about $150, cheap ones for $100.

Let me know if you need any further help, and if you found that this information was helpful a good rating would really be appreciated.

Thanks and have a great day,

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