Question about Sony STR-DE475 Receiver

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Sound went off,says 'protect'

Sound went off,display says 'protect'

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Need replaced power output
transistor amplifier short

Posted on Nov 15, 2009

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Posted on Jan 02, 2017

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2 Answers

Hi;my Yamaha receiver RX-V 373 will not turn on. No power. No display. It may be that the unit went into protection mode. Can anyone there, help me, restart my unit back to factory condition?


If you have power it should click before protection mode and have a light showing it's in protection mode.
After the transformer there's some resistors that have failed if it's in protection mode normally it's one or two that have failed, you can get the reading of what they should be by testing them

Apr 17, 2016 | Yamaha Audio Players & Recorders

1 Answer

No power output or display.green standby light flashes.


Sounds like either a blown mainpower fuse or the thermal fuse for the power transformer. If the protect circuit was kicking in, the display would light up, but then turn off with a red blinking light. the green light with no display means the transformer is not getting power.

Dec 31, 2013 | Denon Avr-1610: 5.1 Ch A/V Home Theater...

1 Answer

In my display image wrote protect


the common problem of displaying protect is your sound i.c or sound amplifier i.c.is deffective

Sep 06, 2010 | Car Audio & Video

1 Answer

'protect' blinked and then no sound or display


Disconnect the outside speakers "at the speakers" then turn back on. If the problem persists, disconnect the speakers at the back of the receiver and try again. If the problem stops "at the receiver" check your terminals and make sure no braids are touching each other. If the problem stops when you disconnect at the speaker, chances are good it's a bad voice coil from moisture. Most "outdoor" speakers with a brand name on them have a pretty good warranty. Good speakers have a 10 year warranty and the manufacturer will replace. If you still have an issue, post a comment and I can help you some more

Jul 26, 2009 | Sony STR-DE925

1 Answer

Displays "Protect" on screen


the audio amplifier output are fried

Dec 03, 2008 | JVC MX-KB30 CD Shelf System

1 Answer

RCA 27' tru flat sdtv- power light comes on- no display,no sound.


How do you unlock your TV from Protective Mode? There is a certain code that you need in order to unlock the Television. The technicians are saying that it went into Protective Mode, when it umplugged all by itself. I need the code so I can watch my TV again.

Nov 23, 2008 | RCA TruFlat 27F520T 27" TV

1 Answer

Power On Displays Flashing "Protected"


The audio amplifier IC´s are on short circuit.

Jun 15, 2008 | Sony STR-DE535 Receiver

4 Answers

Protect on the Display


Hello all I had that same problem & I went to www.kenwoodusa.com & downloaded the owners manual for our model type & problem solved...there's a reset button to the left of the number buttons & the auto button on the face....u'll have to use a pin or something to press it but it fixed my problem!! I can play cd's again!!!!! ^_^

Mar 19, 2008 | Kenwood KDC-MP205 CD Player

1 Answer

Flashing Protect light


what are u using to play music??

Feb 12, 2008 | Infinity Reference 5350a Car Audio...

1 Answer

Onkyo Tx-v940 Receiver/Amplifier Protection Mode


Audio amplifier IC's damaged you need to change it.Good luck

Dec 31, 2006 | Onkyo TX-V940 Receiver

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