Question about Sony STR-D665 Receiver

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I have a STR-D665 FM-AM Reciever. It worked fine before I moved but now after about 5 minutes of play it will click and flash "Protect". Is there a way to reset this? Do I have something wired incorrectly?

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When you moved did you put somethink on it so that it does not have good ventillation through itself to keep it from overheating? Or set it down in a way that it does not have ventilation room under it? Some papers set on top of it or a pillow under it would block good cooling ventilation through it.

Posted on Jan 21, 2009

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Sony STR-D665 receiver display flashes "PROTECT"


The most common problem found on FixYa for Audio Video Receiver's is:

My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.

Jun 07, 2010 | Sony STR-D665 Receiver

1 Answer

Sony GX57ES FM/AM Receiver does not come on


MINE DOES THE SAME THING. I JUST USE THE REMOTE (or a universal remote).

Jun 25, 2009 | Sony STR-D665 Receiver

1 Answer

Sony DE-445 reciever flashes PROTECT


Sounds like a grounding problem. If the ground plug isn't missing or loose try plugging it into a different outlet.

Jun 13, 2009 | Sony STR-DE445 Receiver

1 Answer

"Protect" flashing on STR-D665 Receiver


Check if you connect corectly the speakers wiresnand if they are right connected the audio amplifier Ic are damaged

Nov 28, 2008 | Sony STR-D665 Receiver

1 Answer

Sony STR-D665


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

Sep 16, 2008 | Sony STR-D665 Receiver

2 Answers

My reciever does not work


Power Amp IC gone in your set, replace it.

Jul 30, 2008 | Sony STR-DE575 Receiver

1 Answer

Manually tuning the reciever


you should be able to tune in manually.
press tune
press fm or am
press d. tuning
enter the frequency of the station 4 or 5 digits ie 9370 or 10450

another thing to look into would be getting a yagi fm antenna, they are directional and although you may have to rotate it for best results, they work great.

Nov 20, 2007 | Sony STR-DE985 Receiver

1 Answer

No output on main speakers


I have experienced a similar problem with my Sony STR-GX57ES and took it to a certified tech only to find it needed the power supply replaced. I opted to hunt down a compatible power supply but have been unsucessful thus far. That being said I picked up an STR-D665 for next to nothing and found the power supplies to be quite different (you would hope so any, with the ES meaning Elivated Standard and all) but with the D665 working flawlessly I'd rather have something working than nothing. Good luck!

Dec 06, 2006 | Sony STR-D665 Receiver

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