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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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.
your digital board is bad. Try this: turn the unit on, hold the display button and press power, there should be some front panel buttons that are + and -, press these to cycle through showing the different firmware versions. It should start out at MAIN the next one should be DSP, if the DSP shows nothing but ?????????, than Q3001 on the digital board is bad and you will need to replace the board
It's hard to access. Remove two screws rear of case and two screws bottom of case to remove the lid. Remove three large screws from mainboard - one at the rear in front of the input port, one to the left of the projector lens, one deep below some blackout tape in the front center of the board. The entire mainboard assembly will now come out. The DMD sub board is to the left of the lens. One screw on the bottom holds it to the main board. The DMD subboard can now come carefully off its connector. The DMD can now be popped off the front of the sub board by using guitar pick or similar.
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.
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.
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.
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....
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.
Some models of Onkyo had problems with memory chips on the DSP boards (digital processing). Replacing these chips usually resolved the problem. These chips are surface mounted and are not the easiest to replace. This should be done by a trained tech. Expect this type of repair to run about $150-$200.