Question about Onkyo TX-SR804 7.1 Channels Receiver

5 Answers

Receiver shuts off on its own

It has been fine, for over a year. This week it has begun shutting off on its own, and the red stand by light blinks. I'll be watching TV for a little while and it just shuts itself off and the stand by light starts blinking. Nothing I read in the manual seems to fit this scenario exactly. I haven't reset the receiver, but I have unplugged it for a day then hooked it back up and it worked for an hour or so then shut down again. Is there something I can do?

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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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Yeah, it's clearly either overheating or shorting out and turning itself off before it gets damaged. It'd first make sure it's cool enough since these unit pump out a LOT of heat and then check speaker cables.

Posted on Mar 01, 2009

I had this same problem it turned out my subwoffer speaker wire got unplugged!

Posted on Apr 25, 2008

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Also check ventilation of the unit, it could be a self protect too due to a heat related issue....

Posted on Apr 25, 2008

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Take it to a repair center because your audio ICs amplifiers are damaged.Good luck.

Posted on Apr 24, 2008

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