Re: Yamaha RX-A3010 working, no sound output

I had same no sound and the firmware/checksum for the DSP chip would not show in diagnostics menu. Also I got a bus NG under the C2-1 DSP test menu. Firmware update always failed at S-5 with an update failure 100. I tracked it down to the Digital 2 PCB chip IC521 D81YK113BZKB400 ic chip. I tried to do a a reball and reflow with no luck. The SPi flash chip data appeared to be intact (can't say for sure if it was corrupted or not but it uploaded and reloaded data ok). I was unable to source the original or the D version of the D81YK113BZKB400...

Re: pioneer vsx 2021 no sound

The unit I just fixed had 26k hours on it at time of failure, if the new one goes half that I'll be happy.
Can the 830s be used in place of an 810? Reason I ask is I accidentally ordered an 830 for this project and wondered if it would work. Still waiting for it to show up. The 810 came right away so I used it.

Re: pioneer vsx 2021 no sound

I bought a B version off of ebay from seller named "miantaxia-0". Couldn't find a D version so I rolled the dice. Time will tell how long it lasts.

Re: pioneer vsx 2021 no sound

The firmware trick worked, Thanks again.

Re: pioneer vsx 2021 no sound

My firmware is at the latest and I cannot reload the file. I would be interested in reloading the firmware. I would be interested in the mod file to allow reloading firmware.

Re: New Members - please post your introductions here

Hello, I am a new member. I used to do board repair years ago for a PC board company and have since moved on to other things for a living. I still work on repairing equipment for a hobby.

Re: pioneer vsx 2021 no sound

I have a Pioneer VSX-52 was doing UE22 for a while but still worked. It slowly got worse until it stopped working. An attempt to update firmware with USB file it stopped stalleed at 20% every time. Displayed *** where the DSP firmware should be. I replaced the TI DSP chip but unit still had no sound and firmware still showed ***. After using the ic 9004 zip file to reload flash into the 8 pin SOIC system is back to working now.

Thank you so much for posting the file it was the last piece of the puzzle since I didn't have a working SPI...