Question about Sony STR-DE475 Receiver

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Sony STR-DE475 5.1 receiver

When I select DVD/LD the display reads "UNLOCK" and does nothing else. How do I unlock this source? I have tried many different button combos, but none have been successful.

thanks,
Randy

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  • Anonymous May 29, 2008

    Same problem

  • Anonymous Mar 18, 2014

    the front buttons are not working? what do i do

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Reset the power by opening itand short all capacitors inside while it is unplug.

Posted on Oct 21, 2008

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I have seen this UNLOCK message a couple times. I connect my (linux) computer to the coax digital in and this message appears when the digital output of the computer isn't configured properly. I'm no ALSA expert, so sorry I don't know the specifics. I do know that I didn't see this during the last reinstall, about 2 weeks ago. I use kubuntu.

Hope this helps

Posted on Jan 27, 2009

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1 Answer

How to unlock my stereo. not getting any sound with tuner or cd


If your display is indicating that a source is locked it may be that the source is not powered on or the source input cable is not connected or incorrectly connected.

Jan 06, 2011 | Sony STR-DE897 Receiver

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Receiver was working fine then suddenly UNLOCK comes on and the receiver won't work Help?


According to the manual, "Unlock" appears on the display when there is no coax or optical input on the selected device.

I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.

Thanks for using FixYa
asnowman

Aug 18, 2010 | Sony STR-DG510 Receiver

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No sound from sattelite i get unlock message


The word UNLOCK may appear in the display if there is a problem receiving a digital audio signal.
  1. Ensure the correct input is selected to receive the Audio/Video (A/V) from the appropriate source.
  2. Ensure a digital cable is connected to appropriate DIGITAL jack.
  3. Ensure the other end of the digital cable is properly connected to the A/V source.
  4. Ensure the A/V source is set appropriately to output a digital signal.
  5. NOTE: The A/V source may have a DTS setting that needs to be turned on, or a DPCM setting that needs to be set toDolby Digital .
Also, make sure that the input mode is selected to Auto mode and try connecting two devices together with the Receiver. Then, select the other input other than satellite and reduce the volume and later select the Satellite. This should resolve the issue

Sep 26, 2009 | Sony STR-DE935

1 Answer

Function Selector Bypasses Input Sources


Hopefully this post isn't too late... That receiver has the ability to disable certain inputs. The easiest thing to try is to do a factory reset.
1. Turn off the receiver
2. Hold down DISPLAY and PANEL UP/DOWN buttons and press power.
3. All Clear should appear on the screen.

Unfortunately, this clears out all of the other settings on your unit. It should, however, re-enable the inputs.

Let me know if this helps!

Dec 28, 2008 | Sony STR-DA90ESG

1 Answer

Inputs locked


The word UNLOCK may appear in the display if there is a problem receiving a digital audio signal. Follow the steps below to troubleshoot this issue.
  1. Ensure the correct input is selected to receive the Audio/Video (A/V) from the appropriate source.
  2. Ensure a digital cable is connected to appropriate DIGITAL jack.
  3. Ensure the other end of the digital cable is properly connected to the A/V source.
  4. Ensure the A/V source is set appropriately to output a digital signal.
  5. NOTE: The A/V source may have a DTS setting that needs to be turned on, or a DPCM setting that needs to be set toDolby Digital .

Jun 04, 2008 | Sony STR-DG510 Receiver

1 Answer

How do i un lock


The word UNLOCK may appear in the display if there is a problem receiving a digital audio signal. Follow the steps below to troubleshoot this issue.
  1. Ensure the correct input is selected to receive the Audio/Video (A/V) from the appropriate source.
  2. Ensure a digital cable is connected to appropriate DIGITAL jack.
  3. Ensure the other end of the digital cable is properly connected to the A/V source.
  4. Ensure the A/V source is set appropriately to output a digital signal.
  5. NOTE: The A/V source may have a DTS setting that needs to be turned on, or a DPCM setting that needs to be set toDolby Digital .

May 27, 2008 | Sony STR-DG510 Receiver

1 Answer

No Digital Output


"Unlocked" only means that it isn't detecting a digital signal on the input. "Locked" conversely means that it has locked on to a digital signal. My Sony receiver behaves this way.

Dec 05, 2007 | Sony STR-DA5000ES Receiver

1 Answer

Digital optical from DVD player produces no audio


Hi, It sounds like your receiver is still looking for audio on the coaxial connection, rather than the optical.

1. Make sure the optical connection is between your DVD player and the LD/DVD Optical In on the back of your receiver.
2. If you have a monitor connected to the receiver to show the on-screen display, click Setup from the main menu, click Input Mode, then, next to LD/DVD choose Optical. It may be set to coaxial, analog or auto.

Alternatively, choose the input source on the front of your receiver (LD/DVD), then press Input Mode button (bottom right, near the input selector) till it displays Digital Optical.

If all else fails, reset the receiver by:
1. Turn off the receiver
2. Hold down DISPLAY and PANEL UP/DOWN buttons and press power.
3. All Clear should appear on the screen.

Use caution, however, as this will erase all the settings in your receiver.

Nov 28, 2007 | Sony STR-DA90ESG

1 Answer

The word unlock is displayed on the amp


http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&externalId=C216020&sliceId=1&sonymodel=STRDG710&sonyregion=US&sonytemplate=1&product=SG_STRDG710_5_8023&fes=true

Nov 19, 2007 | Sony STR-DE675 Receiver

1 Answer

Sony STRDE597


From the Sony site "The word UNLOCK may appear in the display if there is a problem receiving a digital audio signal. Follow the steps below to troubleshoot this issue. Ensure the correct input is selected to receive the Audio/Video (A/V) from the appropriate source. Ensure a digital cable is connected to appropriate DIGITAL jack. Ensure the other end of the digital cable is properly connected to the A/V source. Ensure the A/V source is set appropriately to output a digital signal. NOTE: The A/V source may have a DTS setting that needs to be turned on, or a DPCM setting that needs to be set to Dolby Digital."

Feb 26, 2007 | Sony STR-DE597 Receiver

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