nodols
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Posts: 75
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Post by nodols on Jul 5, 2022 0:33:43 GMT -5
Finally fixed this Pioneer!!! I bought another VSX-LX55, sold as working but it put up UE22 after a couple of days and stopped working too. The eBay seller refunded me and said keep it... I looked at my VSX-2021 again and the DSP firmware part was showing *** instead of numbers. The manual shows the firmware is stored in a nearby 8 pin flash chip, IC9004. So I took the flash chip from the 55 and copied it to the one in the 2021. This got the 2021 working fully again, so my DSP chip replacement from China was a success. All I need to do now is replace the DSP chip on the 55 too and both will be working again. I updated this post as I have the working DSP flash dump for IC9004 if anyone has the same problem after DSP replacement due to a failed firmware update. I have a Pioneer Elite VSX-52 here which has the same chip as yours and have the same exact problem. Powers on, two relay clicks and then dead silence. No sound from any input. I am currently searching a usb type firmware. Also, would realy like to learn how to extract the firmware from this unit and reflash as you did. Any tools you can recommend I could buy or software I could download to do such that? |
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Deleted
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Post by Deleted on Jul 5, 2022 6:47:36 GMT -5
The latest firmware is here: www.touslesdrivers.com/index.php?v_page=23&v_code=42670The most likely problem with yours is the DSP chip has failed. These are not available to buy new and any you find for sale on eBay or Aliexpress are likely to used/reballed ones at best or fakes at worst. Most won't work at all or will fail again soon after. The only good source for this chip is a much newer model Onkyo but you need BGA rework and reball skills to remove and fit once successfully. The corrupted firmware is the next problem caused by the failed DSP. You need an eprom programmer to be able erase the associated flash memory and load a known good file from a working receiver. This alone won't fix the no audio until you replace the DSP and trying to load a firmware update from USB can cause more problems as it will fail part way with a dead DSP chip. Unfortunately there is no 'quick fix' to this problem and without the right tools, skills and replacement parts, the chance of a successful repair are quite low. |
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nodols
Junior Member
Posts: 75
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Post by nodols on Jul 5, 2022 16:45:28 GMT -5
The latest firmware is here: www.touslesdrivers.com/index.php?v_page=23&v_code=42670The most likely problem with yours is the DSP chip has failed. These are not available to buy new and any you find for sale on eBay or Aliexpress are likely to used/reballed ones at best or fakes at worst. Most won't work at all or will fail again soon after. The only good source for this chip is a much newer model Onkyo but you need BGA rework and reball skills to remove and fit once successfully. The corrupted firmware is the next problem caused by the failed DSP. You need an eprom programmer to be able erase the associated flash memory and load a known good file from a working receiver. This alone won't fix the no audio until you replace the DSP and trying to load a firmware update from USB can cause more problems as it will fail part way with a dead DSP chip. Unfortunately there is no 'quick fix' to this problem and without the right tools, skills and replacement parts, the chance of a successful repair are quite low. The only thing I have right now is time. This receiver probably isn't going anywhere. So I'm open to learning new things. WRT eprom programmer. Is there a cheapish hardware or software you could recommend? I have checked the firmware version it shows some numbers and some * could this be corrupted already? I have watched several videos on reballing, would probably be not going the high road on buying those expensive BGA rework station. Some diyers have done it simply by a good hot air station and no stencils - just plain ol hardwork. Maybe if I get bored I'll go that route. For now I need to educate myself on making/acquiring myself an eprom programmer. Do you have any recommendations? I've looked around on Ali, there are some USB eprom programmers at a cheapish price. Will those work? Just plug-in directly to the usb port of the receiver and run a software to extract? |
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Deleted
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Post by Deleted on Jul 5, 2022 17:09:27 GMT -5
You can't extract the firmware via the receiver's USB port. The DSP part is stored in a 8 pin flash memory chip on the hdmi board. This needs to be removed and put into an adapter to be read, erased and reprogrammed in the eprom programmer. The TL866II Plus is a good choice for this process.
When it comes to bga reballing, you are looking at 256 x 0.6mm solder balls in a space smaller than the size of your fingernail. Placing these without a stencil is very difficult and time consuming.
The * * * in the firmware version would indicate the DSP is not booting and the firmware may be corrupt as well.
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nodols
Junior Member
Posts: 75
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Post by nodols on Jul 5, 2022 19:29:00 GMT -5
You can't extract the firmware via the receiver's USB port. The DSP part is stored in a 8 pin flash memory chip on the hdmi board. This needs to be removed and put into an adapter to be read, erased and reprogrammed in the eprom programmer. The TL866II Plus is a good choice for this process. When it comes to bga reballing, you are looking at 256 x 0.6mm solder balls in a space smaller than the size of your fingernail. Placing these without a stencil is very difficult and time consuming. The * * * in the firmware version would indicate the DSP is not booting and the firmware may be corrupt as well. I have just seen a video of that eprom programmer seems like quiet a handy tool for all kinds of eprom repairs. Might get one for myself to play around. I am guessing repairs will be like these with new receivers. I've also tried going to ebay to see how common this problem is and I am surprised to find that this no sound problem is quiet common on Pioneers and Onkyos some even looks cosmetically mint. Maybe in the future I'll try reballing too I am not unfamiliar with nitty gritty repairs, would probably need a magnifying lamp when doing it as yeah those are tiny solder balls. I tried updating the firmware with the USB update and it failed, kind of confirmed my suspicions now that this is really a DSP chip issue. With the processes that you have explained. 1. New chip 2. Erase eprom 3. Install eprom from a known good receiver It could be that others who tried buying the same chip from Ali hasn't done the erasing and loading /programming the eprom, thus them saying it's fake because it doesn't work. The final step of programming the chip could be the missing piece. And with others saying that those chips could have just been old chips that had been removed and reballed, as new ones could not be acquired from the manufacturer for licensing issues. Could it be that those chips are good all along and only needs to be erased and programmed? Do you think reballing my current same chip will solve this problem? |
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Deleted
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Post by Deleted on Jul 6, 2022 0:43:32 GMT -5
Good luck throwing money at Aliexpress... every BGA DSP chip I've bought from there has been a obvious fake and didn't work.
Before doing this you're going to need to buy:
Temperature controlled soldering iron
Temperature controlled SMD rework hot air gun
Eprom programmer + adapters
BGA reball station + 0.6mm stencil
This represents a significant investment plus you need the skills to use all this equipment. Trust me when I say this isn't gained from watching You Tube videos.
Reballing or reflowing the old chip may work if you're lucky but Aliexpress ones are a waste of time.
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Post by xXFREDBERTXx on Jul 6, 2022 10:40:42 GMT -5
Let it to buy expensive FAKE BGA DSP Chip‘s on Ali 😉☝️
These are used or defective old B ones and only reballed & relabel from a Ali monkey ☝️
I buy so so many there these D810/D830 and no one was working it is a time and money waist ☝️
I know also from another member here that these don’t work, and to your question yes I have good dump’s from these working amp‘s and also skill to mount these on the PCB but no chance when these Ali BGA ones are FAKE it can’t work ☝️
Regards
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nodols
Junior Member
Posts: 75
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Post by nodols on Jul 7, 2022 15:05:59 GMT -5
Good luck throwing money at Aliexpress... every BGA DSP chip I've bought from there has been a obvious fake and didn't work. Before doing this you're going to need to buy: Temperature controlled soldering iron Temperature controlled SMD rework hot air gun Eprom programmer + adapters BGA reball station + 0.6mm stencil This represents a significant investment plus you need the skills to use all this equipment. Trust me when I say this isn't gained from watching You Tube videos. Reballing or reflowing the old chip may work if you're lucky but Aliexpress ones are a waste of time. I am a bit confused, in your previous post you said that the one dsp chip you bought from China worked. Where was this chip bought? I am guessing not Ali? |
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Deleted
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Post by Deleted on Jul 8, 2022 11:24:38 GMT -5
The ones I bought from Ali were all fakes and some very obvious from the poor quality markings that had been put on the chip surface.
I also bought four from an eBay seller e-best_trade. Two worked and two were dead. Since then I'll only use ones I take from later Onkyo receivers and reball myself.
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nodols
Junior Member
Posts: 75
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Post by nodols on Aug 20, 2022 18:01:25 GMT -5
The ones I bought from Ali were all fakes and some very obvious from the poor quality markings that had been put on the chip surface. I also bought four from an eBay seller e-best_trade. Two worked and two were dead. Since then I'll only use ones I take from later Onkyo receivers and reball myself. Got a pioneer elite here. Would you be able to reball it? I can remove the hdmi board and mail it to you.  |
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Post by xXFREDBERTXx on Aug 22, 2022 9:36:50 GMT -5
@ nodols one question how many hours have your amp down?
Because when it is to high than it makes absolutely no sense to do that huge huge work with a old already dead one ☝️
Regards
xXFREDBERTXx
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Deleted
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Post by Deleted on Aug 22, 2022 9:52:18 GMT -5
If the original chip is high hours use and it probably is now, then it is better to replace it than reball it because it may already be dead anyway.
If yours is a Pioneer Elite, then I guess you're based in the USA and mailing it to the UK and back again with repair costs on top would easily exceed the value of the receiver. You need to find a repairer local to you with BGA rework skills.
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nodols
Junior Member
Posts: 75
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Post by nodols on Aug 25, 2022 10:11:49 GMT -5
If the original chip is high hours use and it probably is now, then it is better to replace it than reball it because it may already be dead anyway. If yours is a Pioneer Elite, then I guess you're based in the USA and mailing it to the UK and back again with repair costs on top would easily exceed the value of the receiver. You need to find a repairer local to you with BGA rework skills. You have got to tell me a starter kit for reballing these. I was looking at amazon which hot air rework station to buy as I was planning to do this DiY. Anyway nothing hurts if I failed except me sinking some dough into a fancy new hot air station. Anyway, I was planning on purchasing a station, but the branded ones are way out of my league Hakko and such. Am looking into those cheapish chinese ones. Do you think they'd work for my application? I am not doing this for setting up shop but just for my own personal loss or gain that is. |
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Deleted
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Post by Deleted on Aug 26, 2022 0:38:42 GMT -5
I already listed the equipment you need before...
Temperature controlled soldering iron
Temperature controlled SMD rework hot air gun
Eprom programmer + adapters
BGA reball station + 0.6mm stencil
There is no cheap or quick fix 'kit' for this repair.
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Deleted
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Post by Deleted on Aug 26, 2022 1:24:16 GMT -5
The equipment on that list can be easily found on eBay, Aliexpress etc from Chinese suppliers, cheap or otherwise but it will still cost as much as an old amp is worth or more to buy this.
If you're relying on watching You Tube videos to gain the skills to carry this repair out then you may be disappointed with the results.
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