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Onkyo TX-NR709 Main OUT HDMI Repair (Got Sound, No Picture)

C

Cama

New Member
Hello all,

As the title states I have an Onkyo TX-NR709 AV Receiver which has audio but no video on the Main OUT (ARC) HDMI port. This problem started a few weeks ago when one day all of a sudden I turned it on and it just had no video, I thought it was a bad HDMI cable so I tested the cable and it was fine and just to be sure i tried a different cable and still nothing.

I do wish to attempt a repair because apart from this, it works great and its only run for about 5500 hrs. I've looked around online and it seems that to fix this problem (temporarily) you need to turn the receiver off, unplug the receiver, wait 5 mins then turn it back on (which doesn't work in my instance), however this leads me to believe that it might just be a bad capacitor somewhere. So if anyone could point me in the right direction (wiring diagrams) or have some insight in to fixing this I'd appreciate that very much.

Thank you
 
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Onkyo was offering repairs for this issue but I believe no longer.

Youtube has some repair tutorials for Onkyo receivers experiencing this issue (I have a 606 with a similar problem and I actually purchased the parts, but I never got around to fixing it, and at this point I have plenty of other receivers anyway). They don't specifically mention your model, but it may be similar enough to others than you can figure it out.
 
Thanks for the reply, I had a look on YouTube and found a video that walked through replacing the capacitors on the HDMI board. So after I replaced them but still the problem remains. If anyone has another clue that might lead to the solution I'd be very grateful.

Thanks
 
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Is there a factory reset? Something like this happened to my Marantz. Took it to the shop where I bought it and they shipped it off for repair... well they found "nothing" wrong, gave it a factory reset, and it was back to normal. Weird, but I'll take it!
 
@WillVT Thanks for the link!
I entered the info on my 906 (no hdmi outputs, audio seems ok), and got this response:
Your unit is not exhibiting symptoms this program addresses.
OK then. STILL won't ever buy anything from Onkyo ever again, and will advise any one and everyone I know or who asks for advice Not to.
@Cama Sorry your recap didn't work - glad i didn't bother to try it on mine.
 
Have no audio with my TX-NR414.

Seen a guy on a Youtube video put a heat lamp on the HDMI board and after a bit the receiver was working again.
 
Agree, adding heat seems odd. I didn't twig to how severe the heat issue was and add a cooling fan to it until after the failures started to appear.
The fan did slow the rate of HDMI output failures, but it still eventually went 'full dark'.
Repeated calls to Onkyo at the time only rang and rang and rang, even though I'd purchased it direct from them.
Cama - glad a reset fixed yours - YAY!!
 
swechsler said:
That's odd, usually the problem is the opposite, board starts overheating.
Click to expand...
That's the problem. It overheats and melts the solder, then the board lifts and no longer has contact. Heating it remelts the solder and it MIGHT work again afterwards. When it does, it's temporary at best anyway.
 
dysmike said:
That's the problem. It overheats and melts the solder, then the board lifts and no longer has contact. Heating it remelts the solder and it MIGHT work again afterwards. When it does, it's temporary at best anyway.
Click to expand...
Does it really get hot enough to melt the solder just from the board components? That's 360F or higher, depending on the type of solder used. Even if it did, a heat lamp wouldn't get hot enough to remelt it; you'd need a reflow machine or oven for that.
 
swechsler said:
Does it really get hot enough to melt the solder just from the board components? That's 360F or higher, depending on the type of solder used. Even if it did, a heat lamp wouldn't get hot enough to remelt it; you'd need a reflow machine or oven for that.
Click to expand...
It does. This is the same thing that also happened on at least one version of the Xbox. I haven't seen the video, so I'm unsure what was used as a heat source. I have a hot air rework station that'd do this though.

I have an Onkyo that went through this about 8 months after purchase, they repaired it with a new board, but also noted it was my only repair under their program.
 
This isn't the video I was talking about but there are a few that show applying heat to make the unit work again,,,

 
dysmike said:
He's doing exactly what I said. At about 1:30 he's talking about getting it hot enough to melt the solder.
Click to expand...
Right and in the comments (I know, take them as a grain of salt) adding a heat sink and a fan afterwards would help, which makes sense.
 
OK, yeah I was thinking about an actual heat lamp. I could definitely believe a halogen bulb would get hot enough; I once accidentally burned a piece of wood (not enough to catch fire, but caused a large charred spot) when I put it too close (still several inches away) to a halogen bulb. Will have to remember that trick if I need to reflow a BGA chip.
 
Tronk said:
Right and in the comments (I know, take them as a grain of salt) adding a heat sink and a fan afterwards would help, which makes sense.
Click to expand...
This is definitely a good idea, otherwise it will likely happen again. An older CPU heatsink/fan (like from a Pentium III) combo should do the trick.
 
The video I actually first seen on this is at the link below. I may give this a shot with mine once I can come up with a suitable heat lamp. I'm wondering if the liquid Rosin that was used in the first video is needed?

I would like to get the NR414 working because the DS676 I'm currently using is a big heavy beast and won't fit on a shelf I'd like to have my receiver on where as the NR414 would fit nicely.
 
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