Question about Yamaha DSP-A3090 7-Channel Amplifier

3 Answers

Is it worth fixing at this cost?

Our amp turns on and then a few seconds later turns off. We took it to a repair man and he said that 2 chips were gone in it and needed replacing. Thats ok, but I am queering what he wants to charge for his services. For the 2 chips it is $96aus and his labor is a whopping $198aus.
1. How much work is involved in replacing the chips?

2.Would it take 3-4 hours, or are we getting ripped off?

3.And if this is an honest quote, is the amp worth fixing?

Looking forward to your reply, kind regards jane

Posted by on

  • janeco1 Apr 04, 2008

    Hi there, thankyou for hour help. All I know is that they are IC chips, which probably is not enough to go on, but thankyou for your input. If that sheds anymore light on it let me know. Even at $290aus, is the amp quality enough to be worth getting fixed? (actually the model no. of our amp is RX-V1070, which looked very much like the one in the picture above), kind regards jane

  • christoph433 Oct 13, 2008

    I have a DSP-A3090 and it turns itself off after a few secs too. What is the part number for these chips? Does anyone know where to get them? Anyone have drawings of the amp internal?

    Thanks!


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Your repairman told you 2chips? the output stage of this amp should have 2pairs of power transistors each channel. that means 4pieces. and besides, my experince in Yamaha(where i worked before) not only we replace the poweroutput transistors but also the drivers. it doesn't cost that much. nor the service fee depends in your area but the cost of power transistor shoud be around US 0.95 that was 5years ago.

Posted on May 03, 2008

I have had this problem a number of times (amp switching on then clicking off within a few seconds).

The amp is clicking off to protect the main circuitry but is often caused by speaker/audio cables shorting out somewhere, even on the case itself. Before you spend any money unhook all the cables, turn the volume to zero then hook up one set of cables at a time, each time you hook up a cable switch the amp on and see if it stays on, if it stays on continue to do this until you find the dodgy connection, fix the connection and you should be up and running. If the amp doesnt stay on with no cables attached then its blown a couple of low cost components. Just look up a yamaha service centre and ask them to look at it and give you a quote. At the end of the day this is still a stunning amp and worth a couple of hundred to fix it.

Good luck

Posted on Sep 30, 2008

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Any chance you know what chips? Usually when the amp shuts down, it is in protect mode indicating that there is a problem with the final amp stage. The only "chips" involved there are the output transistors. These should run anywhere from $10 each to $25 each depending upon what they are. Is the unit worth fixing? Probably. Update this with the details from the estimate and I'll try to answer questions 1&2 for you.
Dan

Posted on Apr 03, 2008

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