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The "Official" Onkyo TX-NR905 Thread - Page 287

post #8581 of 8818
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post #8582 of 8818
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post #8583 of 8818
There are two (official) versions of the SM:
- a web version, which has some pages omitted
- a printed (full) version, which is complete


Quote:
Originally Posted by ot1 View Post

I got the SM from a guy online, but big problem,110 pages are missing. A complete SM should have 314 pages.

I'm waiting to hear back from him.
post #8584 of 8818
Thread Starter 
does anyone have the addendum to the service manual which states what parts need to be replaced on the HDMI boards to get it back up and running?
post #8585 of 8818
Quote:
Originally Posted by gurkey View Post

There are two (official) versions of the SM:
- a web version, which has some pages omitted
- a printed (full) version, which is complete

Is either one readily available--or must I sacrifice two chickens? (There is, of course, nothing on Onkyo's website.)
post #8586 of 8818
Quote:
Originally Posted by lsarver View Post

Is either one readily available--or must I sacrifice two chickens? (There is, of course, nothing on Onkyo's website.)

I have a copy. Send me PM if you still need it.
post #8587 of 8818
Usually sacrificing your wife / spouse will do the trick

Quote:
Originally Posted by lsarver View Post

Is either one readily available--or must I sacrifice two chickens? (There is, of course, nothing on Onkyo's website.)
post #8588 of 8818
Quote:
Originally Posted by ap1 View Post

I have a copy. Send me PM if you still need it.

Gurkey sent me a link. Thanks, anyway.
post #8589 of 8818
Quote:
Originally Posted by gurkey View Post

Usually sacrificing your wife / spouse will do the trick

Then I'd have to deal with the in-laws. No thanks.
post #8590 of 8818
When my HDMI board went out, my dealer sweet talked his Onkyo rep into replacing my unit. I have a sneaky suspicion that more of these went out than Onkyo would care to discuss.

I was under warranty at the time.
post #8591 of 8818
Quote:
Originally Posted by Jon S View Post

does anyone have the addendum to the service manual which states what parts need to be replaced on the HDMI boards to get it back up and running?

There isn't a troubleshooting guide in the SM. There are at least 25 chips on the HDMI board plus a zillion passive components. Unless you have SMD removal equipment, a scope and a logic analyzer, you are never going to be able to know what parts are defective. Take a look at the board and you will see what I mean. There is no addendum which states which parts need to be replaced.

Onkyo may already know which part is frequently popping out but they would never tell, because they enjoy being secretive and non-helpful. Their ignorant lame-a##ed policies will be their downfall. They offer no support on their products except to authorized service centers it seems. Nevermind that your reciever may be out of warranty and that you should be able to take it to whomever you wish for repair. The service centers I contacted had a 1-2 month backlog.








Once I open mine up I will post what I found.
post #8592 of 8818
Thread Starter 
would be interesting to know what components are being replaced on the repaired boards. From what I understand, there are different boards for the receiver depending on build date...
post #8593 of 8818
Quote:
Originally Posted by originalsnuffy View Post

When my HDMI board went out, my dealer sweet talked his Onkyo rep into replacing my unit. I have a sneaky suspicion that more of these went out than Onkyo would care to discuss.

I was under warranty at the time.

I would be inclined to agree
I had an HDMI board go out and was replaced under warranty as well

My understanding is that the part alone is like $600?

Warren
post #8594 of 8818
For some time now, I am getting more and more issue with my 905, in that it seams to have issues with the hdmi audio. The symptom is that it sometime starts to click (presumably) a relay in the pace of the sound. Sound is still good though, the the clicking sound is disturbing, and I fear that it is getting worse.

Has anyone had this behavior?

I already opened up this 905 once, to change the eeprom, and it is rather a big job, with all the different boards stuffed in there, so whenever I start the fault finding I'd prefer to be able to fix it in one go, so to speak. Can someone point me where to find the printed SM? I have the other one since before.
post #8595 of 8818
Thread Starter 
Quote:
Originally Posted by turnne1 View Post

I would be inclined to agree
I had an HDMI board go out and was replaced under warranty as well

My understanding is that the part alone is like $600?

Warren

the HDMI board for the 905/906 is about $900-$1200 depending on revision...
post #8596 of 8818
Thread Starter 
Quote:
Originally Posted by VespaMan View Post

For some time now, I am getting more and more issue with my 905, in that it seams to have issues with the hdmi audio. The symptom is that it sometime starts to click (presumably) a relay in the pace of the sound. Sound is still good though, the the clicking sound is disturbing, and I fear that it is getting worse.

Has anyone had this behavior?

I already opened up this 905 once, to change the eeprom, and it is rather a big job, with all the different boards stuffed in there, so whenever I start the fault finding I'd prefer to be able to fix it in one go, so to speak. Can someone point me where to find the printed SM? I have the other one since before.

sounds like the HDMI board is starting to go....
post #8597 of 8818
Quote:
Originally Posted by VespaMan View Post

Can someone point me where to find the printed SM? I have the other one since before.

http://elektrotanya.com/onkyo_tx-nr9.../download.html
post #8598 of 8818
Quote:

Cheers mate!
post #8599 of 8818
Quote:
Originally Posted by VespaMan View Post

Cheers mate!

It was gurkey who sent me the link. Let's thank him.
post #8600 of 8818
Quote:
Originally Posted by Jon S View Post
the HDMI board for the 905/906 is about $900-$1200 depending on revision...
wow....do you know if its the same part that is on the 875?

I have had a couple of 875's that have had HDMI boards that died...under warranty


Warren
post #8601 of 8818


Quote:
Originally Posted by lsarver View Post
It was gurkey who sent me the link. Let's thank him.
post #8602 of 8818
If the HDMI board hasn't been damaged beyond repair i would suggest looking for the electrolytic capacitors on that board, which have been the main culprit in the past for defective HDMI boards in several of the later Onkyo family members.

If i remember right there are about 16 of them which have to replaced by same value and voltage, but higher temperature rating (221°F / 105°C), because they do have a high failure rate / reduced lifetime span of only a few thousands hours at those temps present (they are originally rated for only 185°F / 85°C).

There is a DIY thread here at AVSforum http://www.avsforum.com/avs-vb/showthread.php?t=1246078 for the lower range Onkyo models, which provides some hints how to proceed.
Note: Some soldering experience probably needed...
post #8603 of 8818
I was trolling through a audio store the other day and what did I see...but a silver 905 on the shelf.....$499( no remote or mic)

I asked the guy what the story was and he said it had been returned a while back and had been sitting around...and that it was working perfectly

Well..I bought it...ordered the remote and mic from Onkyo for $63( total)
I decided I would sell my 875 and could probably get what I was paying for the 905

WELL...I get it home and HDMI input 1 is not passing audio...go figure..lol

The store is an authorized dealer so I get the full factory 2 year warranty...I just have to ship it to the service location...which will cost me about $45.00

I am still happy though...it seems that the other parts of the receiver are fine and maybe its a placebo effect but I think it sounds a little more dynamic than the 875

So based on what I understand the cost of the repair is...I will be getting twice what I paid for the unit in the initial warranty repair


Warren
post #8604 of 8818
Thread Starter 
Quote:
Originally Posted by turnne1 View Post

I was trolling through a audio store the other day and what did I see...but a silver 905 on the shelf.....$499( no remote or mic)

I asked the guy what the story was and he said it had been returned a while back and had been sitting around...and that it was working perfectly

Well..I bought it...ordered the remote and mic from Onkyo for $63( total)
I decided I would sell my 875 and could probably get what I was paying for the 905

WELL...I get it home and HDMI input 1 is not passing audio...go figure..lol

The store is an authorized dealer so I get the full factory 2 year warranty...I just have to ship it to the service location...which will cost me about $45.00

I am still happy though...it seems that the other parts of the receiver are fine and maybe its a placebo effect but I think it sounds a little more dynamic than the 875

So based on what I understand the cost of the repair is...I will be getting twice what I paid for the unit in the initial warranty repair


Warren

Make sure that the HDMI is configured to pass audio in the setup. It may be disabled.
post #8605 of 8818
Quote:
Originally Posted by Jon S View Post

Make sure that the HDMI is configured to pass audio in the setup. It may be disabled.

you can set the main HDMI output to pass video and not audio?



Warren
post #8606 of 8818
Thread Starter 
Quote:
Originally Posted by turnne1 View Post

you can set the main HDMI output to pass video and not audio?



Warren

yes.... see page 109 of the manual....
post #8607 of 8818
Quote:
Originally Posted by Jon S View Post

yes.... see page 109 of the manual....

thanks for the info...and I will test it out

BUT....I have tested more than HDMI input of the 905

So...I hardly imagine you can get the HDMI inputs to perform differently

ie...if using the same HDMI output...you can't change what is output from an HDMI output from a specific HDMI input that is being utilized at the same time

which...as I have said before.......as I have have had HDMI boards replaced on both 875's I have owned

WTF is( was) going on with Onkyo and these HDMI issues?

I see that folks are starting to have failures with 3007/5007 models now

Due to the expense...it bricks a receiver


Warren
post #8608 of 8818
Thread Starter 
The problem with the Onkyo high end receivers is that they used the HQV Reon-VX video processor. HQV video processors generate a LOT of heat. The heat is so intense, they literally bake the capacitors dry on the HDMI boards (the capacitors have a thermal rating of 85 degrees centigrade. Repairs have been made by replacing the dried out caps with 105 degree rated components) or they fail when there is inadequate cooling.

I also have a Denon DVD-3930 player which uses a HQV Realta processor. The HDMI board in the Denon also crapped out due to excessive heat.

Unfortunately, the manufacturers do not design in adequate or any cooling on these hot processors, attaching a good heat sink or using 120mm PC fans over the HDMI board would reduce the failure rate considerably. Right now, it's not a problem if it is going to fail but rather when.

Now, the newest Onkyo receivers are also having problems with an IDE connector that is failing. The only recourse is to have the connectors and the cabling replaced. This appears to be caused by a substandard part which is failing prematurely.
post #8609 of 8818
The Reon HQV has been especially designed for use without a heat sink, as stated by the manufacturer, because of customer demand.
Unfortunately the heat generated must still go somewhere, in this case to the neighboring components. The temperatures reached stays at around 140°F / 60°C in the closest surroundings of the chip, if installed to manufacturers instructions (may go even higher in closed or restricted cabinet space) but this rather high temperature causes quite a derating of the lifetime span of the electrolytic capacitors (specified for 185°F / 85°C) used. Thus the HDMI board often failes right at or after the end of the warranty period (!)

Forced cooling will prolong the lifetime of those components as does the exchange of these components with ones which have a specified higher temperature rating (221°F / 105°C).
post #8610 of 8818
Quote:
Originally Posted by Jon S View Post

The problem with the Onkyo high end receivers is that they used the HQV Reon-VX video processor. HQV video processors generate a LOT of heat. The heat is so intense, they literally bake the capacitors dry on the HDMI boards (the capacitors have a thermal rating of 85 degrees centigrade. Repairs have been made by replacing the dried out caps with 105 degree rated components) or they fail when there is inadequate cooling.

I also have a Denon DVD-3930 player which uses a HQV Realta processor. The HDMI board in the Denon also crapped out due to excessive heat.

Unfortunately, the manufacturers do not design in adequate or any cooling on these hot processors, attaching a good heat sink or using 120mm PC fans over the HDMI board would reduce the failure rate considerably. Right now, it's not a problem if it is going to fail but rather when.

Now, the newest Onkyo receivers are also having problems with an IDE connector that is failing. The only recourse is to have the connectors and the cabling replaced. This appears to be caused by a substandard part which is failing prematurely.

while that makes sense...there have also been numerous failures with Onkyo receivers that do not use the Reon processing
Notably the 805

So there must be more to these HDMI board failures than the Reon processing heat

Warren
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