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Dsp and hdmi issue onkyo tx sr-706

1/2009 TX SR-706 onkyo serviced HDMI board fails again! I had this receiver's hdmi board replaced at my cost in 7/2010 as onkyo would not cover service as unit was purchased from an online electronics dealer they stated was not a registered onkyo dealer. Too bad I didn't know this ahead of time as when I registered the unit online I found out. That onkyo service repair cost me $375.....I had paid $537.63 back on 1/09 for the TX SR-706 originally. So, here I am 5 years from purchase and 3 years from repair with the same failed HDMI board issue. Something is not fair about this in my opinion. I also have an onkyo TX-SR 603X that is perfect. BTW I love these receivers. I actually have had the delayed video no signal issue for a couple of months....took up to 6 on/off cycles to get the video working. I am an engineer and have read the AVM and HiDef forums for years relating to these issues. Rather than spend another $375 I decided to try to repair the issue myself. Please note that when I opened the unit I discovered that the onkyo service replaced hdmi board had the same problematic capacitors replaced with the same temperature rated and 4 volt inferior caps that had failed the first time! I wore a grounding strap and I replaced 12 100 uf caps with 10v 105c caps, and I jumpered all the 3 leg voltage regulators with 1uf non polarized blue 50v caps going from right base leg to wide top bar. Reconnected everything, went right on with perfect hdmi video handshake like when it was new , but now I have no sound in any mode, including fm tuner. Note that when I try to shift to different sound modes such as all channel stereo, etc, they don't show up on the front panel. Also, the eight boxes on the left panel that show the speakers are empty and the hdmi indicator on the right side is blinking. This was working prior to the repair I just completed. So I checked my EPROM and I got Main: 1.01/ 08620A and DSP 1st and 2nd ??????. Looks like that's my problem......EPROM has lost digital audio program. I've done repairs like this on other A/V equipment before..... Looks like I'm done for I would think that Onkyo would at least extend the warranty when you use their repair service and almost pay what the unit costs in the first place.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 279 Answers

SOURCE: onkyo tx-sr604 help

You said you tried hooking the HDMI up directly from the TV to each component, and that worked. How is it usually hooked up - through some kind of switch? I'm not completely understanding your setup here.

Posted on Sep 07, 2007

  • 14 Answers

SOURCE: Onkyo TX-SR605 Receiver HDMI Issue

How good are the hdmi cables that you are using???

Posted on Dec 13, 2007

SOURCE: No video through HDMI section of Onkyo TX SR-805 receiver

My has problems with losing video on HDMI, component, or svideo, this is a piece of you know what!

Posted on Jul 12, 2008

smarthome2
  • 1114 Answers

SOURCE: 1080P video via HDMI generates awful interference

Your Plasma's native resolution is 720P. Go into the Blu Ray's output setup. you can choose 480p 480i 720p 1080i and 1080p. Set it for 720p that should clear up the issue.You may have to run Component directly to the TV since you only have 1 HDMI input and you can run Digital coax or optical to your AV receiver for audio. On a 50" TV the difference between 720p and 1080p using "GOOD" cables cannot be seen by the human eye. Above 50, yes it is noticeable.
Hope this helps.

Posted on May 23, 2009

  • 27 Answers

SOURCE: onkyo tx sr804 receiver turns on by itself

I have the same receiver and the way to fix is simple. in the main board of this unit there are 5 connectors and they slide into other components like Lego. the issue is the king of material they are made of it's cheap. if you reseat the mainboard it will fix it for a day or two, them it will start again. the easyway is to re seat the board and put a fan inside of the receiver between the transformer and the inside of the amp pointing down about 20 degrees connect the fan to a ajustible voltage adapter and connect it to the outlet in the back of the unit. so it comes on when you turn it on. this voltage adapter is cheap. the adapters people buy for phones and or MP3's at Radio shack or Best buy it goes from 1.5v to 12 volts/ this way you can control how loud the fan is in side the receiver. i find 4.5V does the trick. The connectors on this board start to loose contact with some of the pins when heated. the fan keeps it cool enouth to fix the issue. I fixed manny these ONKYO 804's this will fix it. you just have to do it. the main board is inder the HDMI board in a Vertical position running from one side to almost the Power supply. it has 2 screws also holding it in the inside middle back of the amp. Becarefull with these amps 75 V at 23amp's DC is no joje leave it off for a couple of hours to satart working on it. Good luck.

Posted on Aug 26, 2009

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