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Posts: 2
Registered: ‎03-20-2017
Message 1 of 2 (715 Views)


Can't remove "PROTECTOR" from STRD990 receiver.

Does Sony answer these posts? Type in a search under this subject - get over 800 hits! Happens on many devices!

Same instructions keep getting posted - they do not work!

Please state what the actual repair is that a Sony tech apparently does - since all the posts end up stating if that doesn't work contac a Sony tech!

Unit has been completly disconnected from everything, cleaned etc. Restarted etc.


Fix the problem! PLEASE!!

What is gthe secret repair to "restart"?

What is the PC equivalent to CTRL_ALT_Delete??

Posts: 1,766
Registered: ‎11-04-2016
Message 2 of 2 (668 Views)


Hi Srosen,


Welcome to the SONY Community!


If the words PROTECTOR and PUSH POWER appear in alternating sequence on the display of your home audio device, or if the word PROTECT or PROTECTOR appears, there may be an external speaker issue or connection issue that is triggering the protection circuit. Try following these steps to resolve this issue:


The steps represents a possible solution to this issue:


  1. If there has been an electrical surge or power outage, then the internal surge protection inside the home audio device may have been triggered to protect the device from the surge. This is normal. To reset the internal surge protection circuit unplug the AC power cord from the wall for at least 30 minutes.
  2. Ensure the top of the home audio device has proper ventilation to keep it from overheating. Running the home audio device in a poorly ventilated cabinet can trigger the protection circuit.
  3. Reduce the volume level. If the impedance of any of the speakers is below the rated impedance range indicated on the rear of the home audio device next to the speaker connections, the home audio device may enter the PROTECT mode. Raising the volume with a low impedance speaker will trigger the protectioncircuit.


    • Replace low impedance (outside of specifications) speakers with the correct impedance to prevent this from occurring.
    • If you continue to use the low impedance (outside of specifications) speakers and you ran the Auto Calibration, check your SPEAKER SETUP and individual speaker LEVEL to reduce any speaker LEVEL with a positive gain to 0.0dB or less.
  4. To isolate the problem, do the following:
    1. Turn off the home audio device, and remove all speaker wires from the back. Then turn the device back on and check if the issue is resolved. If it is still having the same issue, turn off the device again leave it off for at least 30 minutes before turning it on again.
    2. Inspect the speaker cords. If a cord is frayed or in contact with another terminal, an error will occur. Fix the connection to prevent a short circuit.
    3. Make sure the speaker impedance is within the recommended range. If the impedance is not correct, the speakers will not work properly and may be damaged. If the speakers are within the recommended impedance range, check the connections. If the speakers being used are within the suitable impedance range and they are still not working, there may be a malfunction or some other flaw within the speakers. Test by using a different set of speakers if available.



You may access these steps in this link:,66/kw/protect.


Hope this helps!





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