Okay, I admit, we do have a lot hooked up to our system; but we do our best to keep the receiver well-ventilated.
It started every once in a while...just shutting off....especially when I'd turn the volume up.
Now, It shuts off almost immediately, even with the vol. all the way down!
HELP PLEASE! I can't afford a new system!
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Re: Keeps shutting off
Are you able to check whether any of your speakers may have been blown? or have a direct short to ground ..this usually indicated by the amplifier protecting itself and shutting down,, try un plugging one speaker at a time and you may find that it is one of the speakers ....then get a replacement or get it repaired
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If your reciever is in a tight enclosed space, than it will overheat and shut down to protect itself. Try to get some ventilation to it by either opening the cabinet door, adding a fan, or pulling it completely out of the enclosed space.
the best thing to do is turn off the speaker outputs, if you have the capability on the front panel, turn off the unit, disconnect all speakers. after that, turn it back on and see if it works ok. turn the speaker switch back on, do all the clicks from the relays sound normal? is it on now? if so, you have a bad speaker. connect them 1 at a time til you find the bad one. if not, then the unit is bad and needs repair. it would likely have been caused by a defective speaker or internal component of the speaker, or the speaker wiring. good luck
Aside from any intrinsic problem with your receiver, the usual suspects are;
1) Poor receiver ventilation.
2) Very high levels of bass.
3) Shorts in the speaker wiring.
4) A rubbing loudspeaker voice coil.
Protection is very likely caused by an over heat condition, even with the fan working if the receiver is in a very enclosed place that warms up and is not ventilated it will cause the problem. The solution is to provide more ventilation so that the receiver can cool itself properly.
the 622 receivers are very sensitive to static electricity build up, if you have been through more than two receivers i would demand having a technician come to your home to check grounding of your dish system, while he is there he will also check the grounding where you plug the receivers in, i suggest not using any surge protectors/power strips and, as debmaldo did, try different outlets, if you have a very high end surge protector, it should be okay but for troubleshooting purposes try a different wall receptacle
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.