Question about Sony STR-DE597 Receiver

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Why Does My Sony reciver say protect when i put it louder than 21

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The amplifier stage, which consist of power transistors, is experiencing an overload. Possibly due to the transistors breaking down or the DC threshold level is too high. The latter can be adjust when the input to the transistor is at quiescent or when no input is entering the transistors. I recommend having a professional make the adjustment.

Posted on Nov 13, 2010

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1 Answer

Why does my reciver say portect


Does it come up with Protect as soon as you turn it on or does it play for a bit and then come up with protect?

The Amplifier has a Fault and is shutting down to protect itself (If it will jet you play for a bit). Repeated cycling of this will cause a total failure in the Amplifier (If it says protect as soon as you turn it on).

If you haven't got the Technical ability to have a look at it yourself then your only option would be to take it to a service engineer.

Jun 04, 2011 | Sony STR-DH100 Receiver

1 Answer

Sony home theatre system


Hi,

Good enws is yout unit is not fried. Bad news is you need to get the protection fuse replaced...

Mar 04, 2008 | Audio Players & Recorders

1 Answer

My reciver keeps shuting off and saying protect when nothing conected to the reciver and it was playing music perfectly at low volume setting and then cut off


The Amplifier has a Fault and is shutting down to protect itself. Repeated cycling of this will cause a total failure in the Amplifier.

If you haven't got the Technical ability to have a look at it yourself then I suggest you take it to a service engineer or wait for a total failure and scrap it.

Jun 04, 2011 | Sony STR-DG520 Receiver

1 Answer

Reciver is going to protection mode and sound turns off


is some speakers is defective, or not present (connected), check all cables

Jun 06, 2010 | Harman Kardon AVR 340 Receiver

1 Answer

I get a protected message in my reciver str dh 500 reciver


THE GOAL HEAR IS TO DETERMINE IF THE INSTALLATION IS CAUSING YOUR PROTECTION FAULT OR IS IT THE RECEIVER ITSELF HAVING INTERNAL DAMAGE. REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL GOES INTO PROTECTION, THEN THE RECEIVER WILL NEED TO BE SERVICED, AS YOU HAVE TOTALLY SIMULATED A BENCHED CONDITION THAT IS TOTALLY INDEPENDENT OF YOUR INSTALLATION. MOST TIMES, THE RECEIVE WILL GO INTO PROTECTION WHEN IT SEES AN EXCESSIVE LOAD WHEN TURNING UP THE VOLUME, WHICH IS USUALLY CAUSED BY TOO MANY SPEAKERS OR DAMAGED SPEAKERS, BUT IF NO SPEAKERS CONNECTED, THEN IT IS USUALLY BECAUSE THE RECEIVER SEE AN EXCESSIVE LOAD DUE TO ITS OUTPUT SECTION BEING DAMAGED. IN ANY CASE, ONCE REPAIRED, YOU MUST CHECK YOUR SPEAKERS FOR BURNED VOICE-COILS, WHICH WILL IMPOSE AN EXCESSIVE LOAD TO THE AMPLIFIER AND CAN CAUSE IT TO FAIL AGAIN. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Jan 14, 2010 | Sony STR-DE475 Receiver

1 Answer

As soon as i turn on my STR-SE391 reciver the protection is on


It is unlikely that the pushing of buttons caused the problem. The protect flashing means that a problem was detected and the system has shutdown to prevent further damage. The most common cause of this is a failure of the output transistors. Plan on a parts cost between $20-$40 for this repair.

Dan

Oct 31, 2009 | Sony Audio Players & Recorders

1 Answer

PROTECTOR/CHECK CODE 21 COMES ON ONCE A WEEK OR SO.


STR-DA2000ES, STR-DA3000ES and STR-DA5000ES:

Doument Reference: E23914196
Subject/Description: "Protect 21" is displayed when connecting to speaker/powered subwoofer combo


SYMPTOMS
Protect 21 is displayed when connecting to speaker/powered subwoofer combination model such as the SA-VA7000ED. The problem was also found to occur when connected to the Definitive Technology POWER MONITOR 500 and POWER MONITOR 700 series speakers.
CAUSE
The DC detection circuit is triggered when the speakers are connected.
RESOLUTION
Add a 4.7k metal oxide film resistor across capacitors C1319 and C1329 located on the D-AMP board.

Hope this helps. =)

Oct 23, 2009 | Sony STR-DA5000ES Receiver

1 Answer

I have this unit but after i put the volume high


Posibly bad speaker. How many speaers are you running on this receiver?

Jun 01, 2008 | Sony STR-DE425 Receiver

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