Question about Sony HT-5500D System

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Protect light flashes

The protect light is on and I hacve disconnnected all speakers and the power overnight. Still have the light on. What should I look for next?

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Make sure you have turned the volume down to minimum.

Posted on Mar 07, 2008

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1 Answer

Standby indicator flashes


When the "Protection" indicator comes up the display panel of my receiver or the On/Standby LED is flashing, does that mean my receiver needs to be repaired?
The "Protection" light comes on when the receiver's current sensing and thermal monitors detect some unusual operating condition that, if left unchecked, might damage the amplifier. This can happen if there's a dead short in a speaker wire or if you're using very low impedance loudspeakers at high volume for an extended length of time. On older model AVRs you may see the word "Protect" on the receiver's display. More current models will indicate a flashing red light on the Standby LED when a Protection circuit trips
n thermal cases, the circuitry will automatically reset after a few minutes of cool down and the Protection indicator will go out and normal operation will resume. If the protection light came on due to a speaker wire short, low impedance condition or a bad speaker, the receiver's power will need to be turned off to reset it. Before turning the power back on, all speaker wire connections should be checked for their integrity at the receiver side and at the speaker side. If the protection light goes on immediately after you turn on the receiver, disconnect the speaker wires at the receiver side and retest. If the receiver's protection light goes off, then there would still seem to be a problem with one channel's speaker wires or speakers. Connecting them one by one and retesting should allow you to find the problem speaker or connection.
If after checking all your connections, the Protection indicator stays lit, you may need to "initialize the microprocessor (see the FAQ on that topic) or take your receiver to an authorized repair center for a diagnostic. The "Initialization of the Microprocessor" or "reset" procedure can be found in your owner's manual on current model AVR product. Please note, this will erase all setup configurations in the system and require the system to be setup again. You may want to mark down the settings before resetting your receiver to aid in the setup process. If you had an installer setup your system, you can contact them for assistance and any associated costs that may apply to setup the receiver again would be the responsibility of the owner.

Jul 17, 2016 | Sony DAV-FR1 System

1 Answer

My Sony home theater DZ290K had a push power protection on the display screen how can I fix it?


The "PROTECT" and "PUSH POWER" messages will flash alternately when the protective device of the amplifier has been activated because a strong signal was input, or if there is a short-circuit detected. Press the POWER button on the unit to turn off the system, and check the following items after "STANDBY" disappears.

1) Are the + and - speaker cords short-circuited?
2) Are you using only the specified speakers?.
3) Is anything blocking the ventilation holes of the system?

You may also refer to the following link for additional troubleshooting steps.
PROTECT and PUSH POWER flash alternately on the amplifier screen

Aug 26, 2015 | Sony Home Theater Systems

1 Answer

I have a Sony dvd player DAV-DZ870W when turned on it displsys the word PROTECTOR push power what is the cause of this?


The "PROTECT" and "PUSH POWER" messages will flash alternately when the protective device of the amplifier has been activated because a strong signal was input, or if there is a short-circuit detected. Press the POWER button on the unit to turn off the system, and check the following items after "STANDBY" disappears.

1) Are the + and - speaker cords short-circuited?
2) Are you using only the specified speakers?.
3) Is anything blocking the ventilation holes of the system?

Apr 23, 2014 | Home Theater Systems

1 Answer

MY SONY HBD-DZ810 HOME THEATER IS CONSTANTLY SHOWING PUSH POWER PROTECTOR


The "PROTECT" and "PUSH POWER" messages will flash alternately when the protective device of the amplifier has been activated because a strong signal was input, or if there is a short-circuit detected. Press the POWER button on the unit to turn off the system, and check the following items after "STANDBY" disappears.

1) Are the + and - speaker cords short-circuited?
2) Are you using only the specified speakers?.
3) Is anything blocking the ventilation holes of the system?

You may also refer to the following link for additional troubleshooting steps.

PROTECT and PUSH POWER flash alternately on the amplifier screen

Dec 20, 2012 | Sony DAV-HDX500 System

1 Answer

After an hour standby light flashing and voice cut off


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on; or it may turn on but produce no audio to the speakers.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Sep 20, 2011 | Samsung Home Theater Systems

1 Answer

Shut off on volume 25, and protection light comes on and starts flashing. i unplug it and demo stays on forever till i hit the power button and comes on for 2-3 sec. then shuts back off with red light...


Try reseating all wires in the speakers, you could have it shorting out. If that doesnt work try change the cables. If that doesnt work then try plug one speaker in at a time on different channels to test if it is a short within the speaker or the speaker output.

-Dubkingz

Jun 12, 2011 | Sony MUTEKI HTDDW1600 Theater System

1 Answer

Philips surround sound model HTS3544/37 power light flashes, doesn't power on


Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.


Mar 29, 2011 | Philips HTS3544/37 Theater System

1 Answer

LG LHB335 player will not power on. Light stays red, no flashing or anything. Will not power on at all. tried unplugging and holding button for 30 seconds, and nothing. It was working fine one minute,...


Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Mar 05, 2011 | LG LHB335 Theater System

1 Answer

SONY HT-5500D PROTECT IS FLASHING NO SOUND


Protected in short means that the amp is no longer powering the speakers due to one of the following: 1. Volume is up too loud 2. Equipment Failure 3. Dirty power
Turn amp on by pressing the function button on the remote of a source that has nothing on it or is not powered on. If it still says PROTECTED even though you are on a source with no sound coming in, then the equipment is in need of repair. If it simply comes on normal displaying the source turn the volume down till it says MIN. Find the range of your speaker and amp power by selecting a source with music or movie audio and slowly turn it up till either its too loud or says protected. Be sure to double check all speakers and wires to ensure wire integrity as well as proper connection.

Jan 11, 2010 | Sony HT-5500D System

2 Answers

I keep getting a messasge that says PROTECT on my Harman/Kardon receiver and then shts off


Disconnect all your speakers at the receiver, then turn the receiver back on. Turn on CD/DVD/Cable etc, then turn up the volume, if it does Not say "protect" you know the problem is in a speaker or a wire. If all goes well, re connect one speaker at a time with the receiver off, then turn on, turn up volume. Repeat until all connected or receiver goes back into protection. Once you find the bad wire/speaker, disconnect the bad wire at the receiver, then reconnect the remaining wires and test again. Now, disconnect the wire at the speaker causing the problem and reconnect it at the receiver. Make sure the wires are separated at the speaker side and; more importantly, cleanly connected at the receiver. If you have any freyed wires at the receiver, cut and strip, then twist the braid neatly. There should only be 1/2" of stripped wire, enough to fit under the terminal when you screw it down. Now, turn on the receiver and test again. If it does not go into protection, reconnect the speaker and test again. If it goes into protection at this point, you know its a speaker problem. If possible, disassemble the speaker to look at the internal wiring, if it looks good, look for a crossover network; this will look like a small printed circuit board. If it's really dusty, use some "dust off" and spray away the dust. look at the circuitry for visible damage, ie. brown or black spots. If you see them, there's your problem and the speaker needs repaired or replaced. To double check, you can meter the speaker for resistance. If your multimeter is digital and says 1..... it's a short. If it analog with a needle, it'll peg to the right. This is a very common problem. Hope this helps

Jun 11, 2009 | Home Theater Systems

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