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Kenwood XD V757 System Protected

After over 5 years with no malfunction or damage, I can't play my hifi system now because after I turn on the power on the word ''Protect'' appears in the led display and nothings can't function, all of the system.
Please why suddenly this message appears? I didn't do anything wrong with my hifi system.

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  • 71 Answers

Check the speaker wires are not shorting out

Posted on Dec 17, 2008

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Hello can u help me about my MHC-gzx55d sony hifi component, when you turn on the power, the screen display appear "PROTECT" what is the problem and what is the possible damage of my component. please help...


When it goes into protect mode it has been over loaded. Remove everything from the component and unplug the unit for a minute or two. plug it back in and see if it pops out of protect mode. If this does not work then you will need to do a factory reset or check the fuses on the inside of the unit.

Feb 20, 2015 | Sony Audio Players & Recorders

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My sony 3 disc ex-change/mini hifi component system mhc-rg66 it keeps flashing...


First things first. The unit doesn't switch on.
- Is it plugged in?
- Is the fuse blown?
- Does it look like it's suffered damage?

It switches on, but won't play anything / the lights come on, but no sound.

- We'll start at connections. Is your MP3 player/ iPod/ CD player/ record deck plugged in correctly?
- Are the speakers plugged in correctly/ at all?
- Is it in protection mode - this is a pretty standard thing now, where the amplifier tries to deliver more than it's rated current (ie, into a short circuit), and it cuts out. The only way to fix this is to take it to a local hifi shop, who will reset it (there's usually a small fee involved). The unit will be fine after that.

------- There is no bass. ----------
A few causes for this, so there's a few solutions.
- The speakers are out of phase. This is where one speaker is wired normally, one is wired in reverse. The bass from each speaker is "opposite" and would cancel out. To solve this, Make sure the + on the speaker is connected to the + on the amplifier. There's usually a stripe on the cable to help you determine this.
Cause # 2
The eq settings on your ipod/ unit have been messed with.
Set all the equiliser settings to flat, then readjust them to taste.
Cause # 3 (nasty one)
You've blown a woofer. The explanation is this - the speakers have taken in too much power, the bass unit has got too hot and the glue holding the coil in place has melted. Usually, the woofer can't be physically pushed when this happens. To solve this, it's new speaker time. An alternative is to see if you can get a recone kit for said speaker, and try to fix the voicecoil yourself. This isn't recommended to those who are new to the idea.

I hope this helps the reader.
Chris

on Sep 27, 2010 | Sony LBT-ZX6 Shelf System

1 Answer

I wired a set of mission 700 speakers to a tecnics hifi and now it wont come off stand by what could be wrong.


The way you say "a" Technics hifi implies the SCEH790 might not be the model.

Whenever you DO something and a malfunction appears, UNDO it to get back to square one.

UNwire the speakers and see how that works out. OR you shorted the speaker wires.

May 30, 2011 | Technics SCEH790 CD Shelf System

1 Answer

When i turn on my samsung HT-Z110, the word "Protect" appears...


Protect mode will kick in whenever a fault is detected.

You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.

Mar 19, 2009 | Samsung HT-Z310T Theater System

1 Answer

Pushed power protect


speaker protection turned on.it can be happend because of bad power amlifire section.can you remoove the powe ramp board with large heatsink.its very easy to repair.and i can help.
nuwan

Jan 09, 2009 | Sony Multi-System Mini Hifi Systems / DVD...

1 Answer

Power protect


The protect mesage indicates a problem with the final stage of the output amplifier. The unit shuts down to prevent further damage. Please update this with the make and model and I should be able to point you to the problem part(s).
Thanks,
Dan

May 26, 2008 | Sharp XL-ES50 CD Shelf System

1 Answer

System keeps sayin protect


The word PROTECT appears because there is a short. It can be in your speakers, try running it without the speakers plugged, or look if the wires arent shorting. If it stil ldoes that, its cause there is a short in it, from the output section. The system does that to prevent from damaging the electronic components inside.

Nov 17, 2006 | JVC MX-K30 CD Shelf System

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