Question about Sony STR-D865

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Speakers shorted system

The speaker wires got crushed together and now the unit powers up and just clicks when i touch any button and the lcd screen is out

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I know this was posted a long time ago but you never know who else this might happen to. The problem is one two fuses were blown. You'll need to replace them. All you have to do is open the case with a screw driver. The fuses look like little glass tubes less than an inch long. There are up to five fuses that you need to check. The fuses have a small metal thred in the center of the glass tube. If the thred is broken that is the fuse you new to replace. The fuses are not expensive. Less than a dollar each. All you have to do is pull out any fuse the has been blown. I'm guessing two fuses were blown.

Posted on Jun 19, 2012

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Unfortunatly, something has failed in the unit. Check the internal fuses first. Replace with only the exact type, and try again(FIRST be sure there are no more crushed sections in the speaker cable). If a fuse fails again, the amp needs repairs. Shorted speaker wires often end in blown output stages, and can be costly to fix. Good luck

Posted on Feb 03, 2008

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Can u redo wires

Posted on Jan 24, 2008

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How do you fix a output stage

Posted on May 23, 2010

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Posted on Jan 02, 2017

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3 Answers

I turn on home theater receiver and it says,"check sp wires",then it shuts off


You have some speaker wires crossed or shorted.
inspect the speaker wires for shorting (cat/dog /mouse chewed em up?).
You can also disconnect the speaker wires and plug them back in one at a time to locate the shorted one , should you be unable to determine which wire is shorted.

Mar 23, 2013 | Audio Players & Recorders

1 Answer

When I push ON button I see in display " protect" mode...


It could be a short in your speaker wire or the crossover in your speakers.

1) Turn off your unit and disconnect your speaker wires at the amp, if the protect is no longer displayed when the unit is turned back on, check the connections on the speakers. If you do not visually see a short on the speaker wire connection, turn off the unit and disconnect the wires at the speaker and isolate them so they do not touch then connect the speaker wires at the amp. Turn on the amp and see if the protect is on. If it is on, the wire has a short somewhere in the line. If the protect is off then suspect the speaker has a short in the voice coil or crossover.

2) If the protect is still on after you disconnect the speaker wires at the amp, it could be the power IC in the amp is shorted and needs to be replaced.

Feb 17, 2011 | Sony STR-DE685 Receiver

1 Answer

I have sharp cd pc3500 stereo system when i turn the power on the message on the screen shows PROTECT. I cant do anything nor any function work


Make sure the speaker wires aren't shorted together and that they are not freyed or cracked...the unit is in protect due to it's internal circuitry sensing a shorted output condition...this is in place to protect the unit should the speaker wires become shorted together. You can remove the speaker wires entirely and then turn on the unit to see if it comes on...if so then I would look at each wire carefully to make sure they look good..of course if the unit comes on and the wires look good then you may have a bad speaker component...Now, if the unit stays in protect after you unplug the speakers, then the unit probably has a blown audio output stage inside the circuitry and will need to be serviced.

Jan 05, 2011 | Sharp CD-PC3500 CD Shelf System

2 Answers

Getting a reading "Protect" when


Hi, This feature is designed to protect the unit from short circuits going to the speakers.
To test this,
1 Shut off the System
2 Disconnect the speakers from the back of the system.
3 Start the system with the volume turned completely down to 0.
4 If the system starts and does not go into protect. Do the following

a Turn off the system
b Check the wiring to each speaker and make sure none of the wires or wire strands are touching each other. Do this at the speaker end of the speaker wire and at the system end of the wire
c Connect the speakers back up observing not to have any strands of the wire touching each other
d Turn the power on and see if it plays OK.
e If it does not power up properly. Leave the system completely off for 45 minutes. Then turn it back on and see if it works properly.
If it does not at this point. Professional repair will be necessary.
Hope this helps,
Best,
Mark

Jan 04, 2011 | Sony Audio Players & Recorders

1 Answer

Hi, after i turn the power on and then press the stand-by button, it clicks off to stand-by mode instantly. This is an Onkyo TX-SR500


This indicates that the system is going into protect mode. First disconnect all speaker wires (with the power cable disconnected). Then turn the unit on and see if it sill shuts aff ofter a few seconds. If it does not, then you have a problem with the speakers or speaker wires. inspect the wires at both ends for frayed strands that may touch. If that all lookd good, plu the speakers in, one at a time, until the problem reappears. Be sure to turn the sytem off before plugging in any speaker just to prevent any accidental short which could be catastrophic. If the system goes into protect mode with all speakers disconnected, you probably have a shorted output transistor.

Apr 05, 2010 | Onkyo TX-SR500 Receiver

1 Answer

"PROTECT" appears on my DENON DHT-500SD


Sounds like a speaker wire is shorting against either another speaker wire or something metallic. Check your speaker wires to make sure they're not shorting (touching). If that doesn't work, I'd take it to a repair facility. Good luck!

Feb 16, 2010 | Denon DHT500SD System

1 Answer

What is "Press Power Protect"?


Hi Lois,
Stereo sytems have a protection circuit that alerts you by displaying "protect" when there is a electrical short circuit detected in the system, the most common short happens in a speaker, try disconnectig the speaker wires of both speakers(all speakers) at the back of the system, then play the CD or cassette player(although you will not hear anything with the speakers disconnected) and see if the unit goes into "protect" mode if the problem is still present then you have an internal short circuit and the system will need to be sent in for service or replaced(depending on age,repair costs). I would not recommend investing more than $80 into repairs. Now, if the unit does not go into "protect mode" then one of the speakers or speaker wires is shorted,be sure you check the conndition of the speaker wires before you replace the speakers, then you can replace the speakers(in a pair) and you should be back up and listening! Good luck and Merry Christmas !

Dec 03, 2009 | Sony MHC-NX1 Shelf System

1 Answer

Protection displayed and shuts off When I press the power button Protection is appear on screen on my home cinema system dvd player


check wiring on speakers it sounds like you have some wires touching together somewhere or you have a bad speaker.

Jun 15, 2009 | Samsung HT-X20 Home Cinema 600W Theater...

1 Answer

I have a word titled "PROTECT" on my kdc mp333, how do I get it to function properly again? Pls reply asap.


When the stereo goes into PROTECT mode it is due to a speaker wire having a short circuit or is touching the car chassis somewhere.

Check all speaker wires from the unit to the speakers.

First check that each pair of speaker terminals at the speaker end is not touching. Or, a wire fell of 1 terminal to rest on another.

Best way to check if it's a blown speaker or a wiring short, is to disconnect all speaker connections ( at the speaker end ) making sure the disconnected wires don't touch each other or any metal in the car. press the reset on the unit and power up. If the unit powers up ok, then its a blown speaker.

Otherwise it's a short in the wiring.

If it's a blown speaker, you can connect 1 speaker at a time and the blown 1 will send the unit into protect mode again.

If it's the wiring, disconnect the unit from the wiring and use and ohm meter to check each pair of cables. A reading suggests a short.

If you don't have an ohm meter a battery and bulb will do. This method usually works on a short.

If you have no joy with either method, take each speaker wire in turn and check with a source of earth (anything metal connected directly to the body of the car, cigar lighter main body when pulled slightly out is good)


Regards

Philip

Jul 20, 2008 | Kenwood Car Audio & Video

3 Answers

PROTECTION MODE


i have the same problem also

Oct 20, 2007 | Sony DAV-C770 System

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