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ONKYO TX-DS797 2 yr old placed her sippy cup on receiver... OUCH... heard some popping and now the receiver will turn on and immediatelty turn off.. I could identify board if i had a internal manual... ?? HELP... wondering if i should just buy a new one or try to fix? [email protected]
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Unfortunately, the RC-771M remote doesn't control the TX-SR502. It will only work with these Onkyo models: TX-NR1008 and TX-NR808. The RC-567M is the one for the TX-SR502; replacement remotes that are exact replacements are still available from various places including Amazon.com .
Since the TX-SR502 was released in ~2004, that replacement remote probably won't control other devices that were released in 2004 or later. Onkyo changed its IR code programming before the TX-NR1008 was released in ~2010 and the RC-771M can't communicate with the older receiver. The manuals for the receivers listed above are still available from Onkyo on the product page under the Downloads tab.
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.
Had same on an ONKYO TX-505 given to me for repair - eventually found a broken track on top circuit board that came from a transistor that control the main power on relay - looked like it was burnt off for a section of about 1.2mm
You should be able to get this directly from Onkyo. What is the problem tthat leads you to believe that the board needs to be replaced? Realize that the board could cost upwards of $100 or more.
When I initially bough mine, I had the same problem. It wouldn't shut down, but occasional popping sound on the center speaker. Turns out the impedance on the speaker was 4 ohms, not not 8. Replaced center with an o 8ohm speaker. This receiver is not reated to run 4 ohm speakers. If I had problems with 1, I can only imagine what kind of problems could happen if all the speakers were 4-ohms.
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