Question about Sony STR-DA555ES

Open Question

Sony DA555ES receiver is stuck in ''UNLOCK'' mode

We have a Sony DA555ES receiver that has worked just fine until a guest fooled with the settings and now it displays ''unlock''. We have tried unplugging the unit to reset it and still receive the same message. How do we unlock the system so it will work?

Posted by on

4 Suggested Answers

  • 1 Answer

SOURCE: receiver stuck in protect mode

surely i can reset this myself without paying sony!

Posted on May 02, 2009

ginko
  • 19396 Answers

SOURCE: stuck in protect mode

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.

Posted on May 29, 2009

smarthome2
  • 1114 Answers

SOURCE: My Sony receiver is flashing protect mode

Disconnect all speaker wires at the receiver. Then power the unit on, if it stays on, post a comment on this thread and I will help you troubleshoot further. If "Protect" remains on, you need to have your receiver serviced. Hope this helps.

Posted on Aug 23, 2009

futurework
  • 70 Answers

SOURCE: flashing word "Protector"

Usually a protect fault will indicate a bad transistor in the amplification section. I suspect that the control circuit is sensing a fluctuation in the power supply and going in to protect mode. (assuming that the protect circuit itself is working properly) If a voltage is too high the unit will go in to protect mode to prevent damage to the speakers and the rest of the unit. I would take the unit in to a local repair shop and get a estimate of repair charges. Expect a 60 to 80 dollar repair charge depending on how many parts need to be replaced and what the repair labor rate is in your area.

Posted on May 05, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I've had a Pioneer receiver hooked up to have surround sound and I have used this to play music throughout my house in bedrooms, to play Blu Ray and TV which have all worked fine. I had a guest in my home...


go through the input modes its one of them leave it each mode on for 30 seconds what output do you have for audio on the blueray. It can also be setting for audio from blueray was turned off swich to fiberoptec

Mar 04, 2015 | Pioneer Audio & Video Receivers

1 Answer

Problem with SONY STR-DA555ES home stereo receiver popping & going into protector mode


You may have the speakers incorrectly connected or the speakers you are using have an impedence that is too low for the amp to support.

Sep 15, 2013 | Sony STR-DE875 Receiver

1 Answer

Why after about 2 hours, it cuts off and goes into protection mode


Hello
There are two possibilities to this fault; anyway your set shows that it is in protection mode. When this display is there, there are mot faults with its logical circuit boards. The fault lies on the audio output section or with shorted filter capacitors. If filter capacitor has a short, it will cause to a blown out DC fuse. Just open your set, and see whether there is any bursted or leaky capacitros [mains capacitor or DC filter capacitors at its secondary side]. The 'pop' sound can be of bursted output components too. Anyway, the output section of your amp has a short circuit with it.
Thofough check up should be done to detect the exact fault point. Really it is a skilled work. If you have sound knoledge in electronics and have testing instruments, have a concept of soldering and desoldering, you can do the work by yourself. Otherwise, get it reparied by any experienced service technican or by the authorised service center for Sony at your town. OK.

Oct 21, 2011 | Sony STR-DA555ES

1 Answer

How do i connect my ipod


Connect to "MD/DAT in" on the back. Get a 2x RCA to 3,5 mm stero plug cable.
An example:
http://www.amazon.com/QVS-CC399-06-6-feet-Mini-Stereo-Speaker/dp/B0016LT9T0

Jun 21, 2011 | Sony STR-DA555ES

1 Answer

Flashing word "Protector" shows up and the sound stop on my Sony da555es receiver. I have to turn off the unit several times before the sound stays normal.


Usually a protect fault will indicate a bad transistor in the amplification section. I suspect that the control circuit is sensing a fluctuation in the power supply and going in to protect mode. (assuming that the protect circuit itself is working properly) If a voltage is too high the unit will go in to protect mode to prevent damage to the speakers and the rest of the unit. I would take the unit in to a local repair shop and get a estimate of repair charges. Expect a 60 to 80 dollar repair charge depending on how many parts need to be replaced and what the repair labor rate is in your area.

May 05, 2010 | Sony STR-DA555ES

1 Answer

Have a da555es stereo receiver. Fuses blow as soon as you plug it in to wall socket. Receiver is approx 10 yrs old and just started doing this. Any ideas?


If fuses blow out imediatelly its a sign that its something wrong in the imput area eg the power pcb or transformer pcb. try to see is there in its supply some electronical parts broken or some bad wire isolation.

Feb 18, 2010 | Sony STR-DA555ES

1 Answer

No power on my Sony STR-DA555ES


i went to sony's webite and called direct and got a power supply for just under 200 dollars to my door better than paying 1500 for a new one i over loaded mine and plug to may things in the back of it but the part is available

Jan 07, 2010 | Sony STR-DA555ES

1 Answer

No sound in any mode, sometimes has weird static-like noise that lasts for a second or two. I turned the receiver off and back on and it started working for a while the other day. I also changed the modes...


Follow the steps below to troubleshoot why there is no sound:
    IMPORTANT: If model-specific information is required to complete any of the steps in this solution, refer to the operating instructions supplied with the product. Manuals are available online in the Manuals/Specs/Warranty section of the Sony® eSupport Web site.
    NOTE: Because each of these steps represents a possible solution to this issue, check the sound after completing each step.
  1. Verify that the Audio/Video (A/V) receiver is set to the correct function or input mode.
  2. Verify that the A/V receiver is not in the demonstration mode.
  3. Check all speaker connections to verify proper connection.
  4. Depending on your model unit, select the main speaker output (A or B) that corresponds to where the main speakers are connected. IMPORTANT: If the main speakers are connected to speakers A on the A/V receiver, the speaker output must be set to A for sound to be reproduced.
  5. Run a test tone operation to test the speakers if your A/V receiver has this feature.
  6. Verify the cables from the source component are connected properly to the A//V receiver.
  7. Connect the component to a different input on the A/V receiver.
  8. Tune the A/V receiver to the new component input.
  9. If the issue is still not resolved, replace the A/V cable between the component and the A/V receiver. NOTE: If all speakers operate using the different input, then the first input on the A/V receiver is not functioning correctly.
  10. Connect a working speaker to the speaker output on the A/V receiver that is not working.
If the issue is still unresolved, service may be required. The Sony® eService Web site at http://eservice.sony.com/ can assist you in obtaining service from a Sony Service Center or locating a Sony Authorized Servicer.

Sep 21, 2009 | Sony STR-DA555ES

1 Answer

I have a Sony DA555ES receiver. Even if all I have hooked up is two speakers (left and right channel), it only sends sound to one of them (whichever is hooked up as left). If I switch, then the other...


i really want to tell u sony is the worst ever.....even my friend had the same probs........u just unplug the wires and buy a 2-4 feet wire of the same kind and attach it urself making the connections properly or just get it attached at any electric repair shop...........

Jul 12, 2009 | Sony Audio & Video Receivers

Not finding what you are looking for?
Sony STR-DA555ES Logo

Related Topics:

258 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Audio & Video Receivers Experts

nexrad_chris

Level 2 Expert

117 Answers

Cindy Wells

Level 3 Expert

4751 Answers

Pieter Vleeshouwers

Level 3 Expert

1410 Answers

Are you a Sony Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...