Tear down and repair





    • This is not a difficult repair but take a look at this video before you dive in as there are some details you might not be comfortable with.

  1. Android 修理キット



    Android 修理キット



To reassemble your device, follow these instructions in reverse order.

3 の人々がこのガイドを完成させました。

Dan Dunham

メンバー登録日: 2017年04月15日

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14 件のコメント

Same problem here. Tried to just reload the Firmware several times via USB… kept getting an error 010 at the end. Was a bit skeptical of above so I initially just unplugged everything from the mother board with the exception of not removing it and therefore not disconnecting it from the board on the side, and then re-assembled. Booted up and again tried to reload firmware several times via USB. Same error at end. So then I removed the board and baked at 390 for 15 minutes per the above, AFTER removing the one piece highlighted. Let it cool, reattached everything. Then tried to update the Firmware via network. It finished quickly, but still no sound. Lastly, I tried again with the USB method and SUCCESS!! Everything is working fine! very very strange… not sure which step fixed it. a) removing the board from side board (complete disconnection), b) baking, c) trying the network method first, but ITS WORKING!!! Cheers.

dbwarner5 - 返信

That's great news! And thanks for the detailed response. This is a method I have used for several computer systems that developed problems with their GPUs. I believe what is happening is that over time with the heating and cooling cycles the solder joints under the chips themselves develop faults and eventually stop conducting properly. Basically this baking process remelts the solder in the connections and allows proper contact to the GPU or CPU or whatever chip it is. So far this fix is working well for me so I hope you experience the same.

Dan Dunham -

Doing this right now, so thank you very much! Question, on removing the capacitor before baking - any tricks to get it out? Or just have to unsolder it.

kaleb - 返信

Hey Kaleb,. I missed you question but to get that cap out you'll just want to desolder it with a desoldering tool of some sort and pull it out. You could just heat the lead up and pull each side out individually but that's going to put more stress on the cap and is kinda messy.

Dan Dunham -

Hi Dan,

it's amazing if I heat the DTS component with a hair dryer and then I turn on the RX, the sound is there directly. And if I cool or that I turn it cold you have to wait between 5 and 10 minutes!

michels - 返信

That sounds about right, it seems that these chips are very unstable and you can get all sorts of strange problems from them. Mine would work for about a day or two after heating it and then it would start clicking in and out and then fail completely and would not come back. I assume Yamaha got a bad batch of chips and I have heard similar complaints about other brands as well. It's too bad TI didn't step up and pay for the repairs but that's how things go these days.

Dan Dunham -

Dan, I'm having the same issue. Did you ever come up with a fix?

Michael Estes -

I considered buying some of the replacement chips just to see if I could repair it but I made such a mess of getting the old chip off that I decided against it. With the 5 piece min. I didn't want to spend the money on it rather than a new unit with updated processing. If somebody tries it please update this thread.

Dan Dunham -

I have a RX-A730 and it started having a delay with the sound coming on. At first this was only a couple of minutes. Now it can be as long as an hour. This was true regardless of what I was using, TV/cable, DVD player, Streaming through my TV and the AV cable, streaming Net channels, and my turntable. I tried all methods of a firmware update and it would end in an error code.

From what you are describing, it looks like my unit needs to be on long enough to heat the chip. This all started around the four and a half year mark.

Cindy Shaw - 返信

If that receiver uses the same sound processing chip that mine did then you will most likely continue to see unstable performance from it. It's just a bad design. You can try and bake the board BUT since it sounds like you receiver works ok after its turned on you might just leave it on. Iddle current is not high on these so it's not like your waisting much electricity to just leave it on. You'd use more electricity trying to fix it with a board bake than just leaving it on. With that said if you are having other issues then it might be worth a try. Just remember that at the end of the day I was not able to actually fix the problem.

Dan Dunham - 返信

Mine has been loosing sound for about a month now. At first, the sound would pop on and off about 5 to 10 cycles at first power up. Every day i power it on, the delay in sound is extended. Now a month later it takes about 10 minutes to produce sound when powered on.

After reading these forums, I do beleive as the DTS chip needs to warm up before it produces sound. Maybe it needs to be baked. I may try this fix in the future as it gets worse.

Thanks for all the info…

Daphne Guilding - 返信

Just tested my RX-V673. I heated DSP chip with hair dryer and DSP started to functioning then little bit cold spray and its dead. It’s Taxas Instruments D80YK113CPTP400 failure. Source: http://media.digikey.com/PDF/PCNs/Texas%... “Description of Withdrawal/Discontinuance:

The affected products listed below will be discontinued.TI is offering a non-cancelable lifetime buy for the products listed.

Each replacement device listed below is a pin-for-pin direct functional replacement of a corresponding affected device.Please contact your local Field Sales Representative if you have any questions.

Reason for Withdrawal/Discontinuance:

Premature aging issue on the Rev B and C of this part family”

reijod - 返信

I have had the same problem of missing sound on a RX-V677 Yamaha receiver. I have heated up the DSP chip (D80YK113DPTP400) which is supposed to be the revised version per reijod’s link and the amplifier recovered its voice. I used an airgun calibrated at 150 °C which is the maximum junction temperature these chips can safely handle. I would NOT recommend to bake the whole board at a temp greater than 100 °C otherwise all the plastic parts like connectors are going to melt and the board will be damaged. I am currently trying to find a replacement HDMi board but the price is ridiculously high considering the receiver selling price. Furthermore, it is not easy to find. If someone wants to share a link, I’ll gladly take a look, thanks.

Christophe - 返信



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