Question about Sony STR-DA3400ES Receiver

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When i turn the volume up from my sony receiver strda3400es de protection comes in. By lower volumes it works ok.

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Hello
Measure load resistance. That is the output connected resistance. If it is too low than normal this type of protection will be activated. Measure the impedence [resistance] of speakers connected to the output. It must be more than 4 ohms/channel effectively. OK.

Posted on May 17, 2011

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1 Answer

The word "Protected" keeps coming up on the


When the word protect comes on it means there is a load problem, first! turn off the receiver, next remove all wires and speakers. Now turn the unit back on and make sure the volume is turned right down, this will reset the processor controller ic, if the word protect stays off it means there is a short in wires or one of the speakers. on the other hand if the word protect comes on when the receiver is switched on "without wires and speakers" you have a short in one or more of the audio output ic's in the receiver that will need a tech to correct.

Jan 25, 2011 | Sony STR-DB830 Receiver

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How to know Amp and volts Fuses of a volume board RECEIVER SET-DE


Power output divide it by 110

example 600 / 100 + 5.45

you need to replace it with 6 Amperes or the closest as long as it is not lower than 6

Jun 06, 2010 | Sony STR-DE935

2 Answers

Sony str de345 in protect mode


If PROTECT , PROTECTOR or a P is flashing in the display of the A/V receiver, there may be an incorrect connection or an improper setting. Try following these steps to resolve this issue:
IMPORTANT: If model-specific information is needed to complete any of these steps, refer to the instructions supplied with the product. Manuals are available online through the Manuals/Specs/Warranty link on this page.
NOTE: Because each of these steps represents a possible solution to this issue, check the A/V receiver status after completing each step.
  1. Check the speakers and speaker wires for proper connections.
  2. Reduce the volume level. IMPORTANT: If the A/V receiver is used at maximum volume level, it may enter the PROTECT mode. Maximum volume listening will cause the A/V receiver to run very hot and may drain the output capacitors.
  3. If applicable to your model, disable the surround sound option if both the A and B speakers are being used simultaneously.
  4. Ensure the top of the A/V receiver has proper ventilation to keep it from overheating.
  5. If the message only occurs when using a DVD player, the sampling frequency may be set too high. IMPORTANT: Some A/V receivers provide compatibility with the higher sampling frequencies through alternate connections. Consult the owners manual for specific information.
  6. Unplug the AC power cord for approximately 1 to 2 hours to reset the output transformers.

Oct 22, 2009 | Sony STR-DE345 Receiver

1 Answer

On my Sony Surround Sound tuner, if I raise the volume up to a certain level (not that loud), I get a flashing sign ''protect'' and the sound to the speakers are cut.


Sony has protection in these receivers for two main reasons.

1 - Checking for DC voltages on the outputs to speakers. Not your particular problem.

2 - Excessive current being drawn from receiver on one or more of the speakers.

Number 2 should be your starting point in finding a solution. Put the volume level on Medium - 35 to 40 on the front panel. Now listen to all you speakers in turn. Any scratching noise will indicate a defective speaker. Remove this speaker from the receiver output and check again if the set goes into protection on high volume.

If you could not find any strange noises on the speakers, remove them one by one and test the set on high volume.

Never - attempt to disengage the protection on this amplifier. The only times we have found the amplifier to be defective with this protection error, it has done so no matter the volume level. Therefore I believe your problem to be a speaker or speakers.

Good luck!

Sep 13, 2009 | Sony Audio Players & Recorders

1 Answer

Sony STR-DE 697


Hi there. Sounds like you may have some wires that go from your stereo to speakers touching.Check all wiring and make sure none are touching especially behind you amp...

Mar 29, 2009 | Sony STR-DE697 Receiver

1 Answer

My Sony STR - DE310 flashes PROTECT


remote volume control is broke.

Dec 22, 2008 | Sony STR-DE310

1 Answer

Works, but goes into protect when you turn up/down volume


If its new call Sony and get service????????????

Aug 28, 2008 | Sony STR-DE445 Receiver

2 Answers

My reciever does not work


Power Amp IC gone in your set, replace it.

Jul 30, 2008 | Sony STR-DE575 Receiver

1 Answer

Avr 3806 power shuts off when volume turned up


Hello david 420

It looks like your receiver's high-speed protection circuit is being activated. It is definitively not a fuse. When a fuse pops, you have to physically replace it. When the protection circuit is activated, the speaker output is cut off and the power supply indicator flashes. There are a few reasons why this happens:

1.- Your speaker wire connections are loose. Whether they are banana plugs or bare wire ends, make sure the speaker terminals on the back of your receiver are tight using clockwise turning.
2.- Verify that your speakers have an impedance between 6 and 16 ohms. Your receiver was designed to work with that impedance range. Any impedance lower than 6 ohms will activate the protection circuitry.
3.- The receiver is used at high volume levels over a long period, which results in an
extreme temperature rise. Improving the ventilation conditions around the unit might help alleviate the problem.

If after complying with these suggestions, problem is still present, you might need to have the unit checked by a professional for possible circuit failure.
Hope this helps. Let me know.

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Dec 31, 2007 | Denon AVR-3806 Receiver

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