Question about Sony STR-DE705 Receiver

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Sony str d550z keeps going into protect mode is there away to reset or another solution

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Sony STR DB-930 Receiver jumping into protector mode

I went through the amp/receiver and used small star washers on all the grounding screws I could find including the one securing the transformer, cleaned dust off all circuit boards, checked output transistors and fuses, all OK.

Re Assembled unit and it worked OK.

I will buy a fan and fan it to avoid sourcing heatsinks for the previusly suggested IC's.

Thanks for the technical help, sure solved my problem.

Regards

Darryl.

Posted on Mar 13, 2008

  • 3 Answers

SOURCE: code for sony receiver model str d565 protect mode

If you need support you can log into:
http://esupport.sony.com/US/perl/support-contacts.pl?mdl=STRDG510

for free tech support on sony chat line

Posted on Jun 02, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony STR-D611 receiver goes into

Hello,
STR-D611 goes to Protect mode when Amp Out area has some problem or got some hardware failure / parts damaged.
If you have experience in repair of Amplifiers, then check followings...

  • Transistor Q708 & 758 , collector +42 volt
  • Transistor Q709 & 759 , collector -42 volt
  • Test above 4 transistors with multi meter
You should obtain related service manual from online manual store.
Need further help, let me know.

Posted on Dec 06, 2008

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

SOURCE: Sony STR DE 485 is locked on Protect mode

Change the audio amplifier IC damaged

Posted on Jul 09, 2009

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Hi. my sony STR-DE 597 go in protect mode. how can I fix/repair this? Give me a tips.


protect mode means there is a shorted components inside your reciever it's probably the out put transistors take out the transistors and test it with a multimeter.

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disconnect all the speakers and turn it on. if it does not go into protect mode, then youve got a bad speaker or wire. good luck

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I need help my sony str dec 445 keep flasking the protect on the display


first check for any loose speaker wire in the back as this will cause the unit to go into protect mode if the bare speaker wire is touching, if thats not the case then there is a problem with the unit internaly and would be hard to tell whats wrong with it without looking at it.

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Goes into protect mode..


you probly have speaker wires arching. unplug them and replug thm in making sure no bare wire is showing

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Sony str-d715 flasses protector


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.

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You've blown it. It recognizes a potentally harmful situation and goes into protect mode.

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Sony Receiver STR-D550Z


Any luck with this Brian? I've got the same problem with a Sony STR-D550Z stereo receiver.

Mar 23, 2008 | Audio Players & Recorders

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