Question about Sony STR-DE715 Receiver

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Protect is on after a few seconds.

The outputs are ok.

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If the output are good, Check for a bad/loose ground. Check the solder near the input jacks, and tighten any and all ground screws that hold the circuit boards to the chassis. It could also be a bad transistor in the protection circuit.

Posted on Jan 22, 2009

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I turn on my noise and it says video 1 for a few seconds then keeps saying protect


The receiver has an output load problem, turn the unit off, remove the speakers and wires, now! turn it back on and reduce the volume right down, if the word protect stays off you have a short in the wires or one of the speakers. However! if the word protect comes back on "with the wires and speakers dis-connected" there is a short in one or more of the audio output ic's in the receiver, this will require a technician to troubleshoot the extent of damage and cost involved.

Jan 29, 2011 | Sony STR-DE845 Receiver

1 Answer

Look at inside at capacitor and fuse but they seem ok. again once i turn it on, it would automatically shuts off after a second.


When a system shuts down after a few seconds it is the self protect circuit shutting down power to the outputs to prevent (further) damage. It may be caused by frayed speaker wires, bad speaker voice coils, or blown output transistors. First, turn off power and remove all speaker wires from the receiver. Turn it back on and see if the problem remains. If it works OK, inspect each speaker wire at both ends for loose strands and correct these. Then, hook up your speakers one at a time until the problem reappears. That speaker or its' wiring is your problem. For safety's sake. turn the receiver off before connecting each speaker. An accidental short of the output terminals can be disastrous (and expensive).

Apr 06, 2010 | Yamaha RX-V661 Receiver

1 Answer

I have a Mitsubishi medallion 65 and it keeps turning off,


Dear Sir,
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times.
1 - 2 = no error detected
2 - 1 = X-ray protect (high voltage or beam current)
2 - 2 = Short protect (short protect monitors low voltage supplies)
2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection)
2 - 4 = Vertical protect (usually loss of vertical from the source)

1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 PART # 283P044020 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. I hope this helped.

Good Luck, big IRISH.

Dec 08, 2009 | Mitsubishi WS-65411 65" Rear Projection...

1 Answer

My jcpower car amplifier is not sound come out


you are probably getting a high voltage jump when you turn it up which will throw the amp into protect mode the only thing I can think of is trying a voltage regulator for your stereo

Apr 04, 2009 | Car Audio & Video

1 Answer

Protect on a-97 amplifier (kenwood)


The 'protect' is there to protect the main circuit board.
It is normally set off by the output stage going faulty and drawing too much power. The output stage is either made up of 4 large transistors or one very large Integrated Circuit. Either or will be attached to a big bit of aluminium, might be painted black and have fins or just raw aluminium. I've never heard of any system with a protection bypass. Be a bit like having a car where you can switch the brakes off with a button!
What happens if you disconnect all the speakers and any aux outputs?
If it stays on then the problem is with what you have attached to it.

Mar 29, 2009 | Audio Players & Recorders

1 Answer

Protect is on


Hi...
Is it LOUD when you first turn it on?
Are the speakers firmly connected at BOTH ends?
If that's all OK then one or both of the output modules in the power amp have failed.
Parts are available

Jan 22, 2009 | Sony STR-DE715 Receiver

1 Answer

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.

Dec 11, 2008 | Phoenix Gold Titanium 800.1 Car Audio...

1 Answer

Mitsubishi WS 55807


Good Day, Y'all;

First check for fluid on the PCB's, if ok check the following:

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SELF- DIAGNOSIS INDICATE X-RAY. CHECK FOR A SHORTED IC5A03 PART # 270P704010 AND AN OPEN R5A73 82K ¼ WATT OFF PIN 2 OF IC5A02 ON THE MAIN PCB. 2. SELF DIAGNOSIS ERROR INDICATES SHORT PROTECT. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB. Good Luck, big IRISH. PS If too much call an authorized service center and have them give an estimate on their repairs in writing.

Apr 25, 2008 | Mitsubishi WS-55807 TV

1 Answer

Protection displayed and shuts off


The protect message indicates that the output amp section has a problem. Normally this requires the replacement of the output transistors or the output amp pac. Expect the repair cost to be about $20-$60 for parts plus the local labor rate.
Dan

Mar 22, 2008 | JVC HXC6 500-Watt Stereo System with 5-CD...

1 Answer

Amplifier/receiver switches off systematically after a few second of use


Sounds like a bad output channel is causing it to go into protect mode. Time to see a repair tech.

May 01, 2007 | Harman Kardon HK 3480 Receiver

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