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TX DS797 popping sound, need subboard

Local repair shop tried replacing the digital processing chip (DSP), and failed by over heating the sub board.
I want to replace the subboard myself.
How do I get the right part?
I assume the sub board is a snap in, connect repair.
Do I need to ship unit to a authorized dealer?
It is past warrenty period, Im sure.
Give my toll free phone numbers to call.
I live in California

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  • Master
  • 734 Answers

Do you need service manual??

Posted on Dec 11, 2008

  • futureloginn
    futureloginn Dec 11, 2008

    ok, 
    download service manual from the above link ------

    http://www.eserviceinfo.com/index.php?wh...

    THanks

×

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1 Answer

How do I get onky to repair my receiver


Check in this forum under recall.
Onkyo USA Support Forum Search
For some period of time Onyko was replacing at no cost a chip that was failing.

If you are able to get audio using the direct input mode it is also possible that the SMD (Surface Mount Device) capacitors are failing because of a characteristic called ESR. (Equivalent Series Resistance) is a known problem for many capacitors used in the DSP(Digital Signal Processing) board of stereo receivers. They are difficult to replace and test for this characteristic, but it is repairable,

The Second link describes a repair process. Others have learned to install a radial capacitor replacement procedure.

Hope this helped?
http://cyberspaceandtime.com/How_to_fix_an_Onkyo_receiver-TX-SR606-By_Ed/gj0x5S9ez5U.video
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No sound for onkyo receiver tx nr709


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There is a crackling noise coming from centre speaker, have tried another speaker and still the same, so not a speaker problem. Have also tried different DVD player and still the same noise, and even...


It depends on what wrong is with the receiver. If there is bad DSP (digital surround sound processing) board better to buy new receiver. If it is just bad channel it can be repaired below or about hundred dollars. It could be also just simple cold soldering joints. You need to bring it to a repair shop and get an estimate.

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I have an Onkyo TX-DS797 it is about 6 yrs old


These units *(if I remember correctly) had a problem with a memory IC in the surround porcessing section that would show up initially as popping and would eventually end up with no sound at all. This is a straightforward repair that involves replacing the IC with a new one (different manufacturer). The problem is that this is a surface mounted IC and is difficult to replace without damaging the underlying PC board. This is NOT a DYI repair. Have this unit checked by an authorized Onkyo service center.

Dan

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1 Answer

I have the same problem with the static and distortion


I can only assume that the unit either produces noise or no sound at all. The DSP board contains all of the digital processing circuits. Even with all surround processing turned of, the signal still passes through this board. It is possible to repair the board, but special tools and techniques are required and most shops are not set up for that level of repair. Unfortunately, the safest option is to replace the board. Inquire whether or not there is a "core" charge. This means that there is some value to the bad board that can be refunded to you upon its return to the manufacturer. With a $300 board, you may be able to recover up to $100 by returning the defective board. Dan

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Onkyo digital reciever has poping noise when in dolby sound


I have the same reciever, and had the same problem.  Contact Onkyo, this is a known issue where defective DSP chips were used and manifest problems with a popping / clicking sound when using surround settings.  These receivers also have a Dolby Digital input issue that can cause audio dropouts when watching cable or SAT broadcasts that encode DD using a 'newer' broadcast encoding methods.  Onkyo is covering the cost of that repair for me now, even though the receiver is 5 years old now....

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1 Answer

Can you help me?


Sorry to tell you this, but that sounds like your amplifier's DSP or DSP power supply/control circuitry has failed. DSP stands for Digital Sound Processing - Source Direct bypasses all internal amplifier digital processing, which is why you have sound here. Unfortunately, you'll want to brace yourself for an expensive repair, because DSP components are difficult or impossible to troubleshoot for a servicer, though sometimes it is something simple and quick.

If it's under warrantee, obviously it'll be covered - if not, you may still consider contacting the manufacturer for repair. They're often less expensive than local servicers.

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Dan

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2 Answers

Water on board..ONKYO TX-DS797


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4_21_2012_6_01_03_pm.jpg4_21_2012_6_02_20_pm.jpg4_21_2012_6_03_36_pm.jpg

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