Question about Yamaha RX-V800 Receiver

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Power reset goes into auto-protect at the drop of hat. rechecked all speakers and disconnected sub. will reset sometimes other times no. but will always click when standby/on button pushed.

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That is actually a sign that the reciever is bad. it usually means the amp is blown. Not in the sense that it wont work. But its overheating and thats where the problem lies. In your case it could be causeing a short. for this reciever it only costs 130 for the pcb board that goes bad. I know no one likes to hear that there stuff is broken. But when i worked for Square Trade i seen a few dozen of these units come through and it was always the amp which can still be serviced by yamaha. -Thanks Nate

Posted on Jun 14, 2008

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No sound and light on input selector knob is Flashing. Light only flashes when speaker switch has been turned to A, B or A&B.


This can happen if there's a dead short in a speaker wire or if you're using very low impedance loudspeakers at high volume for an extended length of time. If the protection light came on due to a speaker wire short, low impedance condition or a bad speaker, the receiver's power will need to be turned off to reset it. Before turning the power back on, all speaker wire connections should be checked for their integrity at the receiver side and at the speaker side. If the protection light goes on immediately after you turn on the receiver, disconnect the speaker wires at the receiver side and retest. If the receiver's protection light goes off, then there would still seem to be a problem with one channel's speaker wires or speakers. Connecting them one by one and retesting should allow you to find the problem speaker or connection.

Jan 14, 2015 | Audio & Video Receivers

1 Answer

How do i reset avr-1705 denon amp?


Before you reset, are you doing this because the amp went in to some sort of protection mode?

Resetting will allow the amp to redo the self diagnosis. But if the problem remains then the amp will shut down again. Resetting doesn't fix things like bad wiring or blown output transistors. So only reset once you are sure you've checked through the system for any problems.

As a safety measure, disconnect your speakers before doing the reset. If the amp goes in to protection again then it is an indication that there are either shorted speaker outputs inside the unit.

Unplug the unit from AC power for 30 minutes, and disconnect all of the speakers and other associated equipment. Upon plugging back in, press and hold the power button at the same time for 5-10 seconds to force a hard reset.

If the unit starts up normally start connecting the speakers one at a time (shutting the power down before connecting each one), until one of the speakers causes the receiver to shut down. This speaker is faulty and would need to be replaced.

If the unit does not power up with NO speakers connected, then it needs the output transistors replaced inside the unit. These directly drive the loudspeaker outputs on the receiver itself, and one or more of them being shorted (closed circuit), will trigger the error on the display of the receiver, and it will not go off until the problem is repaired. They are not user-replaceable as they are PCB mounted, and thermally coupled to a heatsink. In this case, the unit is in need of service.

Sep 02, 2014 | Denon Audio & Video Receivers

1 Answer

Receiver displays "protect" ...then shuts off


From what I have seen..........

Either you have a speaker that is shorting out, Try unplugging on speaker at a time and turning the unit on, and see if it goes out of protected mode. Keep the volume turned low while doing that. Just go by process of elimination. Or you can disconnect all speakers and see if you still get the error message. If not then connect 1 speaker at a time, if it goes in to protected mode while doing a speaker connection then you found the bad speaker.

Otherwise another thing I read a hard reset you should be able to do on the unit is hold down the power button until it display a message that says "Clear All", then hit enter or follow the directions it gives that should reset the alarm code if the receiver will allow it.

Hopefully one of those 2 things will clear your error........

Best I could find out

I would do the speaker test first, usually its a shorted speaker or wire

Aug 25, 2013 | Sony Audio & Video Receivers

1 Answer

Denon avr789 shuts down when we try to increase the volume above say above20 is there a reason for this


The amplifier goes to the protect mode as there is heavy drain in the outputs- the MOSFETS.
This can be due to fault in the input signal, a poor DC regulation or a faulty speaker.
Disconnect all speakers and test one by one to confirm. Also make sure that the input signal is good, try with another source . Test also with the different input selection on the amp so as to confirm if the pre- amp is faulty.
Sometimes faulty capacitor in the sub power can give low regulated output and thus on load can shut down . finally check the input supply voltage, it should be correct or on load it can shut the amp.

Oct 01, 2011 | Audio & Video Receivers

1 Answer

My denon avr1200 receiver once it is turned on goes into Protection mode. How do you reset or make work?


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.

Feb 22, 2010 | Denon AVR-1200 Receiver

1 Answer

How to turn off 'Protect"?


http://esupport.sony.com/US/perl/model-home.pl?mdl=STRDE597&LOC=3
However, If you still have the problem, there is likely damage in the receiver that needs to be corrected. I have a few other posts on this for this receiver. Make sure you don't have shorted speakers connected. One at a time, disconnect your speakers and check them with an ohm meter. If they read 8 ohms, they are electrically ok. Reconnect them to the receiver. If the read 4 or less, they are either of the wrong type or are partially or fully shorted and should be replaced with known good 8 ohm rated speakers with 100 watt program ratings.
Also, you can try using the reset to see if this provides relief. Using the front panel controls, power off. The holding down the 2 channel button, power on. You'll see a reset message on the display. If after this procedure it goes right back into protect mode, the receiver needs professional attention. Best guess is shorted outputs or other damaged components in the power amp section due to wrong type speakers connected or extended high heat operation.

Sep 11, 2009 | Sony STR-DE597 Receiver

1 Answer

When iturn on my Sony STR-DE325 it goes into protect mode


Try disconnecting all of your speakers, and then turn on you unit. If you have a defective speaker, or a short in your wires, your unit will go into protect mode. If your unit seems ok with the speakers disconnected, then turn unit off, hook up one of the speaker leads and try it. This way you can isolate the problem.......

Good Luck,

Eric

Jul 09, 2009 | Sony STR-DE325 Receiver

1 Answer

Amp comes on and goes right into protection mode saw the decibel display briefly, received the "Protect" message on the display. can you pliz help me on how i can deactivate the protection....


Protection is usually a sign of overheating or something is wrong at the power amplifier's output.

Theory: Protection is a delay and sometimes an internal test to allow the electronics to stabilize during power up before they are allowed to interact with the speakers. The most common cause of it remaining ON is that a speaker cable pair is shorted. Some isolation is required...

1. Turn the Power OFF.
2. Disconnect each set of the speaker wires that are directly attached to the receiver. Mark them so you remember where each one went. pay special attention to which conductor is on "+" or "POS" and which is on "-", "COM" or "Ground". You may elect to disconnect them one pair at a time if your sytem is complex and you don't want to lose track of where things were.

Turn the Power ON. Is the "Protect" indication gone from the display?
--------------------
If YES, you have a shorted speaker wire or speaker. To isolate the specific cause:

1. Turn the Power OFF.
2. Attach ONE speaker wire pair at a time and test it by turning the Receiver ON. When the "Protect" light returns you have isolated at least one of the cause(s). Disconnect the defective speaker cable and continue isolation of all speaker cables. Visually examine the cable at both ends for frayed wires that could touch each other or contact metal on the receiver or other objects.

To isolate further within the cable/speaker pair - disconnect the speaker end of the cable on the failing path. Try another cable that you know works, or at least one that doesn't cause Protection to stay on.

If you're electrically savvy and have a Digital Volt/Ohm Meter you can troubleshoot the short(s) with it.
-------------------------

If NO, there is probably an internal problem.

Is it solid or does it come on after the Receiver has been ON awhile.
It could be overheating.
Is the unit hot to the touch?
Is there a cooling device (fan)?
Is it stopped or clogged with dust?
Is there adequate ventilation around the unit for air to flow?
Clean any ventilation slots on the top and bottom of the unit.
Avoid stacking components that produce heat under an amplifier or receiver. Their heat rises. Also keep them away from other heat sources like like home heating vents and radiators.

Problem solid and NOT related to the speakers or heat: internal malfunction.

Let me know.

Apr 06, 2009 | Onkyo TX-DS787 Receiver

2 Answers

STR-DE475 receiver flashes "PROTECT" when turned on


Protection is usually a sign of overheating or something is wrong at the power amplifier's output.

Theory: Protection is a delay and sometimes an internal test to allow the electronics to stabilize during power up before they are allowed to interact with the speakers. The most common cause of it remaining ON is that a speaker cable pair is shorted. Some isolation is required...

1. Turn the Power OFF.
2. Disconnect each set of the speaker wires that are directly attached to the receiver. Mark them so you remember where each one went. pay special attention to which conductor is on "+" or "POS" and which is on "-", "COM" or "Ground". You may elect to disconnect them one pair at a time if your sytem is complex and you don't want to lose track of where things were.

Turn the Power ON. Is the "Protect" indication gone from the display?
--------------------
If YES, you have a shorted speaker wire or speaker. To isolate the specific cause:

1. Turn the Power OFF.
2. Attach ONE speaker wire pair at a time and test it by turning the Receiver ON. When the "Protect" light returns you have isolated at least one of the cause(s). Disconnect the defective speaker cable and continue isolation of all speaker cables. Visually examine the cable at both ends for frayed wires that could touch each other or contact metal on the receiver or other objects.

To isolate further within the cable/speaker pair - disconnect the speaker end of the cable on the failing path. Try another cable that you know works, or at least one that doesn't cause Protection to stay on.

If you're electrically savvy and have a Digital Volt/Ohm Meter you can troubleshoot the short(s) with it.
-------------------------

If NO, there is probably an internal problem.

Is it solid or does it come on after the Receiver has been ON awhile.
It could be overheating.
Is the unit hot to the touch?
Is there a cooling device (fan)?
Is it stopped or clogged with dust?
Is there adequate ventilation around the unit for air to flow?
Clean any ventilation slots on the top and bottom of the unit.
Avoid stacking components that produce heat under an amplifier or receiver. Their heat rises. Also keep them away from other heat sources like like home heating vents and radiators.

Problem solid and NOT related to the speakers or heat: internal malfunction.

Let me know.

Apr 02, 2009 | Sony STR-DE475 Receiver

1 Answer

Auto protect


that is actually a sign that the reciever is bad. it usually means the amp is blown. Not in the sense that it wont work. But its overheating and thats where the problem lies. for this recieve it only costs 130 for the pcb board that goes bad. I know no one likes to hear that there stuff is broken. But when i worked for Square Trade i seen a few dozen of these units come through and it was always the amp which can still be serviced by yamaha. -Thanks Nate

Jun 08, 2008 | Yamaha RX-V800 Receiver

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