Question about Sony STR-DG510 Receiver

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Just replaced the fuse on my receiver and now when I turn it on, it switches to protect within a few seconds. What should I do?

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Stop feeding it fuses and take it to a service tech.

Posted on May 29, 2010


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Posted on Jan 02, 2017


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Yamaha V-459 Receiver turns on & then turns off within 1 second. Where will I find the temperature sensor?

Thermal sensor is going to be a small 3-pin transistor-looking part that is attached to the power supply board and is pressed against the heatsink. Could be something as simple as bad solder connections on this sensor or the sensor might need to be replaced.

Jan 29, 2016 | Yamaha RX-V459 Receiver

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I have a Sony STR-DE 597 reciever. I have been using it fine for a few years with no problems and it sounded great. I turn the unit on recently and a message was displayed on the unit that said PROTECT....

Protect will usually show up if the receiver was turned up too loud to the point where the speakers will crackle, the receiver will switch to protect to not damage anything. Unplug it for about 30 seconds and check all the audio wiring in the back to make sure everything is plugged in good and tight and no loose cables or stray pieces of copper audio wire and plug it back in.

Aug 21, 2011 | Sony STR-DE595 Receiver

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My Yamaha RX V461 receiver will not turn on. When pressing the ON/STBY button, I hear the familiar "click" when pressing the button and a second one about 1-2 seconds later that comes from the...

Your receiver probably went into protect mode because you were overloading the output stage with concert blast. In some units, protection consists of fuses that blow; in others protection is provided by thermal shutdown devices.

Mar 04, 2017 | Yamaha RX-V461 AV Receiver

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Protect Mode

need replaced power ouptup .assy

Apr 28, 2010 | Sony STR-DE698 Receiver

1 Answer

System Protect mode after a Flash fire.

The flash probably was a small resistor burning. While not particualrly common, it does happen. The output transistors are shorted and need to be replaced. If the same channel is bad as the first time, there is a possability that the unit was not completely repaired. Some shops only change the shorted transistor within the transistor pair. This is poor practice and usually leads to another failure of the same channel Check your previous invoice for the parts replaced. The entire complimentary pair of output transistors should have been replaced. If only 1 iof the 2 were replaced, you may have an argument for a warranty repair.

Please keep us posted on your progress.


Dec 10, 2009 | Onkyo TX-DS838 Receiver

1 Answer


protection is designed to protect the output transistors from, shorted speaker wires, shorted speakers, too low speaker impediance,make sure the amp is well ventilated.
turn the amp off for 1 to 2 hours to allow thermal reset if this fails most likley some internal damage has occured and the unit will need to be serviced

Sep 02, 2009 | Sony STR-DE135 Receiver

2 Answers

I have the RX - V3000 Model. It turns on for a second and immediately turns off.

I had the same issue and tried changing inputs and etc. within a second of time. Nothing I did worked until, I opened the lower front access door and twisted the effects knob around quickly. This stopped it from turning off and it has been functioning normally since. Even turning it off and on again is without the issue coming back. I did try most all the buttons previous to doing the effects knob, in case that makes a difference in the long-run.

Before the issue you are having started on the unit I was working on, the owner of this unit did say he was having an issue earlier with the monitor SVideo jack in back, having a role in it powering off like this, about 6 months ago. To make it work then, he would remove the SVideo cable from the monitor jack, turn on the unit and then put back the SVideo cable once the unit was on and working. This allowed it to work for several weeks to a month before turning itself off again. He would repeat this procedure and it would work fine again for awhile.
Could be an electrical or grounding issue via SVideo that messed things up more and more?

Hope this works for you too!!

Nov 18, 2007 | Yamaha RX-Z1 Receiver

2 Answers

I turn it on, it clicks off within a few seconds.

can you be more specific as to "plastic tabs that show signs of slight melting"? Like where are they in relation to components / power supply / heatsinks / power transformer? A first shot... it may be output power fets/transistors (one is open or shorted) that is making one or more of the speaker outputs go to the PS rail. DC shutdown. Does this receiver indicate any "overtemp" or "protect" warnings? I really need a little more specifics.

Aug 19, 2007 | Harman Kardon AVR 25 MKII

1 Answer

Amplifier/receiver switches off systematically after a few second of use

Sounds like a bad output channel is causing it to go into protect mode. Time to see a repair tech.

May 01, 2007 | Harman Kardon HK 3480 Receiver

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