Question about Sony STR-DA4ES Receiver

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My Sony DA4ES receiver has been working fine in its current configuration for over a year. About a week ago the protection circuit kicked on and after turning the unit off for a while it turned on and worked properly. Last night I?m watching a dvd protection comes on and this time I cant get it to go away. So far I have checked the impedance on all connected speaker wires disconnected the sub and reset to the original configuration. Protection is still popping up.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 883 Answers

SOURCE: Protect message when I turn on the receiver

call 800-488-7669 for tech support

Posted on May 27, 2007

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cheebster
  • 39 Answers

SOURCE: volume and multi channel output issue

Hi there. Are you familiar with board level repair for such products ? Your problem is most likely hardware. Either some of the final output transistors are fried, or it's a dsp problem, a regulator, a diode, a transistor in the circuit.. it could be a lot of things. But if everything was working fine and it quit someday without a change in the system's setup, it really looks like an hardware issue ! Do you have a way in the manual, that sets factory defaults, a kind of reset ? A lot of such units do have that. Try to unplug/interchange speakers as well, a shorted speaker could make the amp go nuts as well, but i wouldn't bet on it. Still, i'd check that out. Hope that helps ! cheebster.

Posted on Jun 26, 2007

dunnbiker
  • 8546 Answers

SOURCE: 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.

Posted on Apr 02, 2009

dunnbiker
  • 8546 Answers

SOURCE: Home theater system protection kicks out

Nice write-up.

http://www.sherwoodusa.com/pdf/RD-6500(English).pdf

On page 6 of the manual it states you should use a powered subwoofer and the unit provides a sub output on the rear panel for it. The message from the amp kicking out is that you're not going to get away with your workaround.

I would advise you to purchase a nice amplifier (2-channel bridgeable or single channel) for the subwoofer. That way you'd be sending only LFE signals and your receiver has provisions for adjusting its volume relative to the rest of the channels. I use a nice 5-channel Carver for my 3 subs and both Rear Surrounds.

On eBay I see what I would get if I were you - a Carver M-200T (120W x2; 300W bridged). I have one.

http://cgi.ebay.com/Carver-Magnetic-Field-Power-Amplifier-M-200t-120WPC-Amp_W0QQitemZ200327110781QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item200327110781&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318

Posted on Apr 04, 2009

VOTIT
  • 2071 Answers

SOURCE: audio protect keeps turning off my receiver (sony STR-DE597)

That is the common symptom of the defected STK-IC in power amp.section that busted already or just a loose connection.First try to resolder the pins of STK-IC and also all component parts joint in power amplifier section if its works! if not that is the time you replace it, so it works normal again.

Hope it may helps you...

Posted on Jun 08, 2009

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I lost sound on my Sony DA4ES. Only the preouts work. I am hoping that a factory reset would help but I don't know how.


So at least you understand the equipment enought to know the pre-outs work. What's that leave - the amps. Did the protection relays click on power-up? If not, it may be under duress.

Boilerplate:

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on; or it may turn on but produce no audio to the speakers.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

OR...

http://www.retrevo.com/support/Sony-STR-DA4ES-Receivers-manual/id/387ag919/t/2/

Find the manual and carefully evaluate every indicator on the face to make sure you understand what they mean and how they might affect operations. Look for Speakers NOT enabled, Muting ON, a Tape or other input inadvertantly selected. If you fail to find the errant setting, treat it like a new install and set it up all over again according to the manual.

OR...

Page 21 of the manual shows how to do a factory reset.

Sep 09, 2011 | Sony STR-DA4ES Receiver

1 Answer

I have a large noise upon shutdown of a sony da4es. it's like when the powerswitch is hit, on the remote, the amps are popping in usison a second after that. any ideas if this is normal, or a problem. i...


You should NOT have anything that draws a lot of power drawing AC from the back of a receiver.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Sony-STR-DA4ES-Receivers-manual/id/387ag919/t/2/

Page 79 - 120 watts maximum

Try turning it off with a different source selected. Or disable the speakers because you

Mar 08, 2011 | Sony STR-DA4ES Receiver

1 Answer

PROTECT is flashing on our Sony Digital Audio/Video Control Center


PROTECT means the receiver is automatically powering down to protect it's amplifiers. Top reasons are overheating, which can be caused by poor ventilation, covering vent holes, excessive volumes for long periods of time, or it's actually just that hot in the room, which, with the current weather, I've encountered in clients homes before. The other option, and just as common if not more so, is that the speaker wire outputs are shorted out and are causing the amp to turn off. The easiest way to test this is unplug all of the speakers and turn it back on. If it still says protect, then it's either too hot or there is a physical problem with the protection circuit and needs to be serviced (this would be a good time to kick yourself for buying a sony receiver). If it DOES power on, plug in the speakers one by one, and if the amp goes into protect mode as soon as you plug in a speaker, it's an issue with that one. Check for short circuits in the line (kinks, frayed ends, staples going clear through the wire, etc). If the wire looks good, try putting a different speaker at the end. If a different speaker works, then the speaker is blown, which gives 0 continuity, and the receiver is correctly protecting itself from the high impedance load. Change the speaker.

Sep 08, 2010 | Audio Players & Recorders

1 Answer

Volume to about between 40 and 28 causes receiver to turn off


It sounds like protect circuit is kicking in due to excessive current. If an OHM meter is handy, check for shorts on your speakers. If not disconnect one speaker at a time from the back of the reciever. Play unit at the volume that it fails. If it then plays fine you've isolated the bad speaker.

Aug 30, 2010 | Yamaha RX-V496 Receiver

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Free unlocking code for kdc w3037a


Unfortunately Kenwood codes are only available from the Main Dealer or by using a Radio Decoding Service who will connect a laptop to read the working code inside your radio`s memory chip (EEPROM)

Oct 29, 2009 | Kenwood KDC-W3037A CD-receiver,...

1 Answer

Amp powers on, no sound from subs


the output is blown. It is in need of service.
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause.

Dec 28, 2008 | Alpine MRD-M1005 Car Audio Amplifier

1 Answer

Protect mode shuts down the receiver


If this happens only when connecting the receiver, chech the receiver cable. If the cable is fine, receiver connector at the back of receiver is faulty.

Protect mode will kick in whenever a fault is detected.

You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.

Dec 23, 2008 | Samsung HTZ-510 Theater System

1 Answer

Sony STR-D665


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

Sep 16, 2008 | Sony STR-D665 Receiver

1 Answer

Have a Denon 685 receiver. Purchased a Sony HD tuner (tuner only --$99). Hooked it up to phono input and it worked. After a while protection circuit clicked in. Used integrated tuner in unit. Worked longer...


if you disconnect speaker wire from rear and the problem is solved you will have a real problem in speaker wiring-you must fix it first or disconnect it from receiver and put new wires instead of.

Jul 16, 2008 | Denon Audio Players & Recorders

1 Answer

Protector flashing


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

Oct 05, 2007 | Sony STR-GA7ES

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