Question about JVC HX-D7 Shelf System

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Protect my system is in protect mode

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  • verlongcop Feb 20, 2009

    I have Sharp component CD K7000 i have same problem showing desplay PROTECT.

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I have fixed problem like this...i just replaced stk411-550g power ic and the unit is in full operation...

Posted on Mar 09, 2010

  • CMFN2720 Apr 11, 2011

    what is this part??? i cant find anything on google... maybe i'm he problem cuz im not very electronic savy but what do i have to replace??

  • Jhonny verdugo
    Jhonny verdugo Dec 15, 2013

    Where you get the parts?

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1 Answer

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First check that the speaker wires are not shorting, if okay! the problem is in the audio output stage of the receiver, the protect mode comes on if a load is detected.

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Check the speaker wires for shorts, if okay! the audio output ic's are loading the circuits causing the protect mode to engauge, only option replacement of the above mentioned parts.

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How do I go from "Protect: mode back to FM play on


The word protect will engage when you have output problem and will shut the audio off so no sound is available, however if the sound is working normally with protect visible then there is clearly processor issue, something I have never seen before. But it should be checked by a qualified tech.

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If the unit goes into into protection it usually means the amp is blown. It would need to go into a shop for service if the repari is not cost prohibitive

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reed the users manual...does it say anything about the protect mode ?

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1 Answer

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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.

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1 Answer

Jvc protect


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.

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1 Answer

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Hi ,
Does your unit go into protect mode without speakers connected?.
Jango

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1 Answer

STERO SYSTEM


What happened to make it go into protect mode? was it dropped or something hit it? was there a power outage or storm in the area? or did it just go into protect all on it's own one day? If I have more info I may be able to help.

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3 Answers

Shuts off protect mode


i have a jvc stero and every time that i turn it on ...it show protect and shuts off!

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