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The reason why this is happening is because the reciever is going into protection mode due to a short circuit to the amplifier. It might be a speaker that is shorted out internally or there might be some speaker wires making contact with each other at the back of the reciever or at the speaker. The first thing I would do is disconnect all the speaker wires from the back of the reciever(make sure to label them before removing so you know how they go back). After removing the speaker wires turn on the reciever and see if it goes into protection mode. If it does then there is a good possibility that the internal amplifier might have a short. If it does not go into protection mode then that is good because there is more than likely a short on one of the speaker wires or speaker itself. Now connect one set of speaker wires at a time. After you connect each one try turning on the reciever until it goes into protection mode again. When it does you will have your culprit. Then try swapping speakers with that problem wire set and see if it still does it. If it does then it could just be the wires but also switch the wires to verify that the amplifier does not have a bad channel. If swapping both the wires and the speaker swapping produces the protection mode then that channel for the amplifier will be defective. I hope I have not confused you too much.
The reciever will go into protection mode when there is a short in the speaker wires or the amplifier was overloaded. What I would do first is verify that none of the speaker wire connections are loose at the back of the reciever or at each speaker. And verify that none of the wires are making contact with each other. Then label each speaker wire as you remove them from the reciever so you can re-install them correctly. After you have disconnected the speaker wires try unplugging the reciever for 10 to 15 minutes. Most recievers have a self-resetting overload protection switch and this should reset it back to normal. Now try plugging the reciever back in and turn it on without the speaker wires connected. It should be out of protection mode now. If it is still in protection mode verify that there is not a reset switch somewhere on the back of the reciever. If it is not in protection mode now then proceed to connect one speaker set at a time and turn on the reciever to see if it goes into protection mode. If it goes into that mode after connecting a speaker then that speaker is the cause of the problem. If it does not go into the mode after all speakers are connected then try turning the volume up. If it goes into protection mode then there could be an internal short on the amplifier or a incorrect OHM rated speakers connected to reciever. Verify that the speakers are rated the correct OHMS.
most of the receivers come with a cooling fan inside see if its working they usually work when you turn the volume up,, if its working that means you are playing it to loud if you lower the volume a little it will play just fine..( if the fan inside is not working thats the reason it goes into protect mode and it means you must have it repaired,, it goes into protect mode to prevent furter damage to the unit or the speakers,,
No reset will help this. The problem is an internal short most likely in in one of the amp circuits. This is a relatively simple repair for a service shop. Expect a parts cost in the $40 range. Add in the local labor rate for the total repair cost.
Your receiver is going into protection mode.
Need to know what type of reciever. In the self diagnostic mode there are code that will tell you why it is cutting off. If it is as you say you, as for the fall, you may just be able to reset it in diagnostic mode and everything will be fine. You can search for the service manual online. It will explain the diagnostics and the protection mode in detail.
I have the same problem. my sandby light is on but my receiver will not turn on! I checked my power going into the power supply board that was good. But i do not have power going to the transformer or the receptacle. And both of my fuses r good. check ur fuses and go from there . If u know how to get a power supply. please let me know.
You may have loosened a solder joint on one of the components inside with your air blast. A repair tech would monitor the outputs DC offset voltage and he will probably see one that is not zero volts and while wiggling various things he should see a sudden change in the DC offset voltage on the bad channel when he touches the bad connection. Then it's just a matter of resoldering the connection. Good luck on this one.