Sony STR-DE575 Receiver Logo
William Cairns Posted on Oct 04, 2006
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

Unit going into protection mode

Hi, I just joined, and the story of my problem seems similar to a few others I've just read here. I've had my Sony DE575 for about 4 years now with absolutely no problems. However, it's not a constant, but very often lately, while playing from any one of several different sources (CD, DVD, TV) once a certain volume level is reached the unit goes into "protection" mode and shuts itself down. Due to a change in address I recently had to move & re-connect the unit for the first time, but everything seems to be connected properly & the speakers seem to be in phase. Previously the unit had 2 acoustic research and 2 Bose bookshelf speakers. Now the speakers are 4 Bose bookshelves, with a Optimus center channel speaker. There is no subwoofer. I tried lowering the bass response levels on the EQ, thinking perhaps the it was driving it too hard, but it didnt make a difference. The volume level at which the unit shuts down seems to vary, but I used to be able to have the volume at basically any level and the unit has never previously had this problem. And there's nothing in the manual at all about the "protect" warning that appears. Any ideas, advice anybody could give would be great! Please let me know if you need any additional information. Thanks! Bill Cairns

  • BigRun Dec 26, 2007

    My system with the same AV receiver will go to "protect mode" only after generating a loud noise. I have double and triple checked all the speaker connections, routed all power cords away from speaker wires and yet the "feedback noise" continues intermittenly then into the protect mode. This problem did not start until we moved last February. The problem occurs in all audio selections (DVD, CD, TV) and volume levels. The only difference in the current layout versus the previous equipemnt layout is now the powered subwoofer is between the left front speaker and the TV?Equipment stand. My next move is to by pass the sub-woofer.

×

2 Answers

A

Anonymous

With the shuting off of the player if u have any type of feed back from wireing or elect proble it will shut off

Anonymous

Level 3:

An expert who has achieved level 3 by getting 1000 points

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

President:

An expert whose answer got voted for 500 times.

  • Master 3,130 Answers
  • Posted on Oct 04, 2006
Anonymous
Master
Level 3:

An expert who has achieved level 3 by getting 1000 points

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

President:

An expert whose answer got voted for 500 times.

Joined: Mar 22, 2006
Answers
3130
Questions
5
Helped
1640994
Points
8439

You should first have or check the impedance and resistance of the speakers. then if all the speakers and wiring checks good, the only way to tell if this unit is good or the output section has no problems, is to hook up load resistors to where the speakers go, insert 400 to 1000 hz @.775MV into an input, hook up an osilliscope to the load resistors and slowly turn up the volume and see if the waveform clips before it shuts down. I doubt if you will have the equipment to preform these test but a good repair shop will be able to help you out. If it does not clip or go out then its all speaker wiring and/or the speakers.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
3answers

My Kenwood KDC-MP142 in protect mode. is there a reset button??

My kenwood is stuck completely in protect mode. I ve everything listed and it wont come out of it. So should i assume the unit has gone bad?
0helpful
1answer
0helpful
1answer
1helpful
1answer

My sony str db790 is in protect mode, i have disconnected all the speakers and when i turn it on it goes in to protect mode again. i have connected back 2 speakers that i know have no faults and still it...

Hi Kevin, This may not be a solution but you`ve most likely burnt out the amplifiers, I have the same model and its just burnt out the amplifiers for the second time. I was`nt cranking the volume and it was running my Bose AM 5`s which are very good speakers.Its expensive to repair and not many tech heads will take on anything "Sony". If you do have any luck fixing it please get in touch. *[email protected]* Regards, Neil.
2helpful
3answers

"Protector" error

I had a similar problem and went to Sony tech support.

Seemed my disc got stuck somehow...

Try reseting the system by holding the STOP and the EJECT and the POWER buttons together...
It should go to demo mode....

Then try PLAY to see if you can get the system to read teh disc...
then EJECT...

It took me several trys of doing this but it did work....on the 3rd try.
0helpful
1answer

When iturn on my Sony STR-DE325 it goes into protect mode

Try disconnecting all of your speakers, and then turn on you unit. If you have a defective speaker, or a short in your wires, your unit will go into protect mode. If your unit seems ok with the speakers disconnected, then turn unit off, hook up one of the speaker leads and try it. This way you can isolate the problem.......

Good Luck,

Eric
0helpful
2answers
0helpful
1answer

Protection mode

It's normal for some amps to go into protect for a few seconds when initially powered up. If it remains in protect mode, it may have shorted output transistors. To eliminate other possible causes, read through the following troubleshooting page:

Amp in Protect Mode - Troubleshooting

Let me know if you have any other questions.
1helpful
1answer

Protect Mode With Sony str-de595

Hi snark63

Ypou have an intermittent problem that sounds to be heat related... the more work the amp does, the more heat generated by the output stages. This will be aggravating some poor solder joints that are cracked or dry. The unit needs some repair work done in these areas. If you have good experience with a soldering iron, the cure for this is to resolder the power stages of the unit, or any other solder joints that look to be failing.

I am more than happy to answer any other questions you may have about it, please get back to me here, or use the ASK function to go straight to me :) If you are still unsure, have problems, or we need to look at the situation more deeply, then before you give a rating for this advice, hit the ASK button Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards robotek
Not finding what you are looking for?

350 views

Ask a Question

Usually answered in minutes!

Top Sony Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5755 Answers

John
John

Level 2 Expert

510 Answers

Marvin
Marvin

Level 3 Expert

85242 Answers

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

Answer questions

Manuals & User Guides

Loading...