Question about Sony STR-DE535 Receiver

1 Answer

Power On Displays Flashing "Protected"

I have a Sony STR-DE535 amplifier and sound system. Whenever it is powered on, in the display window is the legend "Protected." I turned all the speakers off position and when I powered on again, had still the same problem. The same "Protected" alert displays whatever program I request from the amplifier, be it radio stations or TV or whatever, and the system does not function. No sound at all, not even static. I checked the troubleshooting guide in the back of the Users Manual; no help. Any help in finding a solution to this "Protected" problem will be sincerely appreciated.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Sony Master
  • 1,550 Answers

The audio amplifier IC´s are on short circuit.

Posted on Sep 13, 2008


1 Suggested Answer

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Please help I had a sony str km3000. no power please help need aservice manual

You unit has a condition known as DC Offset, which displays as protect. This offset condition is presented to the microprocessor IC(a computer within your Sony). This IC will not let you turn the unit back on until the problem is corrected. If you are interested in repairing your Sony, please visit my website at Thank you.

Dec 28, 2014 | Sony Audio Players & Recorders

1 Answer

Hi, whenever i am trying to power ON my hifi...i'm getting a message error on the display screen ''PUSH POWER PROTECT'...flashing continuously. please can anyone advise what should I...

This indicates that you have a blown output amplifier or shorted speaker wire. Disconnect all the speaker wires and try to turn it on once more. If it shows the same display give it to a service

Aug 16, 2011 | Sony DAV-HDX500 System

1 Answer

What fuses does the sony str-de535 need

I beleive it is a 6.3amp gma. It will be printed on the circuit board next to the fuse holder and on the fuse itself. If it is open(blown) you probably will need to replace a set of the output transisters (mp1620 and mn2488). DO NOT use a slow-blow fuse this will cause more damage to your receiver.

Oct 21, 2009 | Sony STR-DE535 Receiver

1 Answer

Sony STR-DE915 Receover, flashing "Protector" when power on

Serious problem either in the power supply or output stages of receiver.

Sep 16, 2017 | Sony STR-DE915

2 Answers

Sony str-de525 system "protector" problem

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

Mar 15, 2009 | Sony STR-DE935

2 Answers


Change the audio amplifier IC´s are in short circuit that´s why your device go on to protection mode.

Sep 13, 2008 | Sony STR-DE535 Receiver

1 Answer


First for the volume you need to clean the potentiometer,and on the tray check the belt of the motor charge

Jun 11, 2008 | Sony STR-DE535 Receiver

1 Answer

High volume cut out

power amplifier circuitry problem,you need a qualified serviceman.

Oct 04, 2006 | Sony STR-DE595 5-Channel Amplifier

Not finding what you are looking for?
Sony STR-DE535 Receiver Logo

335 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Audio Players & Recorders Experts


Level 3 Expert

5686 Answers

The Knight
The Knight

Level 3 Expert

76125 Answers


Level 3 Expert

13434 Answers

Are you a Sony Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides