Question about Sony STR-DE715 Receiver

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Protector appears on the screen

How do you fix this?

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I have the same problem, i also have a STR-DE715. I have two thunder acoustic speakers and two 12in. punch subs. Now when i only play the subs i can go max volume, no problem, great bass the whole deal. Then when i play the thunder speakers i cant even go half way without the receiver shutting off and saying "protector" on the screen(both the speakers are 120 watt). From personal experience i think it could be the speakers youre using, either the receiver is giving too much juice and its preventing the speakers from blowing or the speakers need more power and the receiver cant give it. So a new set of speaker might be what you need. The receiver is 280 watts so something in that zone should work out. Also try turning off the sound field if you're using more than two speakers for the front output (i read this in the manual, you can pull up the users manual on www.manualshark.org and see if you can find something i might've missed) it supposed tp help it in one way or another. E-mail me at flores_j@live.com and tell me if your problem was fixed or not. Im pretty curious myself to find a solution to this problem. hope this helps!

Posted on Sep 20, 2008

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1 Answer

When home theater is turn on, protector push power is flashed on thee screen. player will not function further. volume level is 9. currently can't be turn down.


Protector means there is a short circuit somewhere in either the speakers, the wiring or inside the unit itself....you can try disconnecting all the speakers and then turning on the unit...if the protector goes away, then you have a bad speaker or bad wiring to the speakers....if the problem stays, then there is a faulty circuit in the receiver itself and will need to be serviced

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I keep getting a Protector reding on my screen and it will not let me do anything. What do I do to fix this?


Try disconnecting everything (speakers cables, signal cables, all other units) except the power cord, then turn the unit on, if the protector message persists, then the fault is in the reciever.

If this is the case, you should check the speaker and signal connectors for any damage, shorts or loose solder contacts, also check the unit for any shorted or broken wires, loose wire connections, bad solder contacts on connector pins, bad solder contacts on ANY other components (give some extra attention to the components that tend to warm up while they operate, like main power amp transistors / ICs, voltage regulators, power resistors, diodes, also coils, capacitors, etc). Any loose solder connections should be resoldered.

If there's no message when you've disconnected the outside equipment, you have either a bad speaker, a bad speaker cable, a bad signal interconnection cable, or a fault in any of the units that were connected to the reciever. You can find which one is the cause by turning the reciever off, then connecting one cable or unit, turning the reciever on again, see if there's a message, if there's none, turn it off again, connect the next unit / cable and so on, until you get the protector message. The cable or unit that will make the message appear is most probably the cause for the trouble (there might be loose solder connections on other units' cable connectors or other components). When you plug and unplug the cables many times, with time this will loosen the solder connection on the pins inside the unit, so these need to be resoldered.

Hope you can find out what it is.

regards

3rq8 (Triarcuate)

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there could be a short in one of the connections or your power supply could be fried also ive seen some models with internal fuses that have blown

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Try disconnecting all the speakers from the back and turn the unit back on. If the "protector" display goes away, turn the unit back off and reconnect one speaker. Turn it back on and check for "protector". Repeat.

If you find that one of the speakers causes "protector" to appear, you either have a bad speaker cable or bad speaker. Try swapping each of those out to see what happens.

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You cannot disable it. It is meant to protect the unit from producing more power than it is designed to. When you turn it on, turn the volume all the way down. Beyond that consult the back of your manual for trouble shooting and service information.

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This message indicates that a problem was detected in the amp. In order to prevent any further damage to the amp or the speakers, the outputs are turned off. Does the receiver show this at all times now?
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