ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU

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dante
New Member

Posts: 4

ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Jun 22, 2023 3:02:39 GMT -5

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Post by dante on Jun 22, 2023 3:02:39 GMT -5

Hello wonderful everyones
Im new to the forum and very happy to be here.
Anyways I have an ONKYO NR-6050 which turns on to a please update prompt, attempting an update via net/USB fails at 30% with a 2-83 error, occasionally it might actually just enter normal operating mode, and am able to navigate via the front display and even shows up in my networks and pairs bluetooth, but with no sound/HDMI out.

After opening it up, turns out it had a burnt chip, A Renesas R5F56519ADFP microcontroller (literally has a hole in it).

I have ordered a replacement and waiting for it to arrive, but in the meantime I have some questions.

I have skimmed through the forum and have read bit about firmware, and about Renesas flashers and firmware dumps, haven’t been able to delve deep, but just in case, will I be needing any of this for my particular scenario?

My second question is from curiosity, how does it manage to boot and (occasionally) exhibit apparently normal behaviour, I.e. occasionally it will boot into the display menus and am able to navigate, connect to bluetooth, etc. what is the purpose of this chip? I am assuming it does some basic controls like enabling different parts of the unit eg HDMI, Power Amplifier, but doesn't appear to affect other parts, (like the front panel display navigation, bluetooth, wifi). This is odd, because I’m used to seeing a burnt component just render an entire digital system useless.

Finally, as I am not that sophisticated of an electronics engineer, (my last serious contact with board repair is like 10 years ago, and was more about winging it than actual engineering,) so there is a huge possibility I might screw this over, if the potatoes fall out the sack, anyone know if I can get a HDMI board? Hopefully someone on this forum has pointers? I know I could buy another dead unit from eBay with a working board, but that won’t be possible due to shipping costs, (I forgot to mention, I’m in Nairobi Kenya, so shipping weight will cost more than the price of an entire unit).

Sorry for the long ramble, thank you for reading and hoping to hear back from someone.

Last Edit: Jun 22, 2023 3:03:17 GMT -5 by dante: Spelling

tjmotter
Senior Member

Posts: 384

ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Jun 25, 2023 7:46:28 GMT -5

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Post by tjmotter on Jun 25, 2023 7:46:28 GMT -5

The thing that is important to understand with Onkyo receivers is that they are designed as a series of small, independent computers. Each subsystem can communicate with the others but each is also self sufficient. Because of this, the failure of a component will often only affect one or a couple of functions within the system. Many of these subsystems also have their own power supply section on the board so unless one of the primary voltage rails fails, a failure will often be isolated from the rest of the system.

The MAIN CPU is the one that ties everything together but those use a much more robust Renesas CPU than the one that failed on your system.

Now the big question: what does it do? That one is hard to answer. Nobody has published a service manual for this generation of Onkyo (at least not one I can find) The datasheet shows that it has an Ethernet controller and bluetooth controller built into it but since those items are working, my best guess is that it controls the HDMI subsystem but without touching the board, I won't be able to tell you for sure. The reason I suspect the HDMI subsystem is that when I see a hole in a chip (rare), it is usually caused by an outside source. Since the Ethernet controller seems to be working, getting a voltage spike through an HDMI cable would be my next place to investigate. FWIW, I did have a hole in a chip on an Onkyo once but it was on the Ethernet controller and it happened after my house was hit by lightning (I had a LOT of projects to fix after that). Something similar might have happened on your system.

The other concern I should share is that this chip has onboard ROM. If you are lucky and it is part of the video system, you might be able to get the Onkyo firmware update process to force it into accepting firmware. If not, you might not be able to fix it. In most cases (not all), the video MCU (which I think this is) will update via the standard Onkyo firmware process.

HTH
Todd

dante
New Member

Posts: 4

ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Aug 5, 2023 16:06:37 GMT -5

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Post by dante on Aug 5, 2023 16:06:37 GMT -5

Hello Todd,
First of all apologies for not getting to thank you for your helpful insights, so thanks alot. Anyways, some updates on the receiver, I managed to swap out the chip, but issue persists. however there is a bit of progress, update now gets to 50% before failing, and fails with error 6-81. I now suspect you were right that it is might be a firmware issue and you are correct, I believe its the VMCU as there is a header right next to it labelled VMCU Write/Debug.
You mentioned that it might not be fixable, Does that mean im unable to flash the firmware on the chip, even if i use the header?
If it is flashable, what tool do i need to flash it, and is there anywhere i can find this particular firmware? checked on the repository on this site and it doesn't appear to be listed.
Anyways the unit has most functions operational apart from hdmi, Bluetooth, streaming, sound output work if i skip the update dialog. just no HDMI output or input.

Any pointers to where i can find a solution to firmware flashing or someone selling a replacement/donor HDMI board would be highly appreciated.

Once again thanks alot for the help,
D

tjmotter
Senior Member

Posts: 384

ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Aug 7, 2023 11:43:51 GMT -5

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Post by tjmotter on Aug 7, 2023 11:43:51 GMT -5

You might get lucky and find that this is simply a timing issue. As I noted above, Onkyo receivers are REALLY complex and they can be finicky with the timing of firmware updates. What I mean by this is that the Onkyo firmware update utility installs firmware in a very specific order and when doing this, it expects certain other systems to be functioning. As an example, if the Onkyo automatic firmware utility wants to install the HDMI code on the transceiver chip before it updates the VMCU, it will fail because the VMCU isn't loaded yet.

The way around this is to try to install only the firmware you need. To do this, use the directional wheel to navigate from "update all" to "update VMCU". This will skip everything else and only try to update the video firmware.

Let us know if this works. This trick has saved me a couple of times.

HTH
Todd

Last Edit: Aug 7, 2023 11:49:49 GMT -5 by tjmotter

dante
New Member

Posts: 4

ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Aug 7, 2023 20:42:00 GMT -5

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Post by dante on Aug 7, 2023 20:42:00 GMT -5

Hi Todd,
Thanks for the response, I am attempting what you suggested, but in this receiver there appears not to be an option to navigate to "update vmcu", it just has "update from net" and "update from usb", unsure if there is supposed to be some other way to selectively update firmware. I also have tried logging into the admin console via network and updating selectively from there but it only takes a specific file, "AVR0033.of1" im attempting to rename the files which i am guessing are the VMCU Bios by size (under 1 MB) but that doesn't seem to work either.

Last Edit: Aug 8, 2023 0:09:54 GMT -5 by dante: typos, formatting

tjmotter Senior Member Posts: 384	ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Aug 8, 2023 11:13:07 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tjmotter on Aug 8, 2023 11:13:07 GMT -5 the up/down arrows navigate between USB/NET but the left/right orientation scrolls through the different firmware options

dante New Member Posts: 4	ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU Aug 8, 2023 21:49:35 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dante on Aug 8, 2023 21:49:35 GMT -5 Hi, yes, i tried that, it doesn't work, maybe they changed the setup on these new units?

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ONKYO TX-NR6050 Failed Update, err 2-83, burnt Renesas MCU

Post by dante on Jun 22, 2023 3:02:39 GMT -5

Post by tjmotter on Jun 25, 2023 7:46:28 GMT -5

Post by dante on Aug 5, 2023 16:06:37 GMT -5

Post by tjmotter on Aug 7, 2023 11:43:51 GMT -5

Post by dante on Aug 7, 2023 20:42:00 GMT -5

Post by tjmotter on Aug 8, 2023 11:13:07 GMT -5

Post by dante on Aug 8, 2023 21:49:35 GMT -5

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