Question about JVC HX-D7 Shelf System

7 Answers

Protection The display shows the word ''Protect'' and power cuts off after

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  • Anonymous Nov 05, 2007

    MY PROBLEM IS THAT WHEN I TURN ON MY STERIO IT SAYS PROTECT AND IT WILL COME OFF

  • maxpower1 Nov 09, 2007

    i also have the same problem with my system, it flashes "protect" and turns off, luckily i just got my warantee renewed a week ago. if it is the ic or something else i will post the problem.

  • gasparin Dec 24, 2007

    Evey time the unit is powered up, it displays "PROTECT" and then cuts off. I tryed the reset button, unplugged it... and still does the same.

  • mbbusch Dec 27, 2007

    Same here. My son barely used this and, of course, the warranty expired a couple months ago. It sounds like this is a major problem for this product. No more JVC for me.

  • everlast Jan 14, 2008

    when i turn on my cd component a word(PROTECT) apears.

  • Anonymous Feb 08, 2008

    my system is a JVC HX-D7 and everytime i turn it on it says "protected" i need a solution that doesnt make me take it apart or make me pay for it...

  • flawedchild Mar 02, 2008

    This really bites. I agree. No more JVC for me!

  • andyt1991 Mar 03, 2008

    i rewired my stereo and now it says protect and then turns off

  • ardillita Nov 26, 2008

    When push power on , in the screen say PROTECTEC and a few secunds the power is off.

  • Champ42 Jan 18, 2009

    Where is the fuse referenced above?

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7 Answers

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If u replaced the parts stk420-610 and protect is still there u should check parts #d2058/78 r33/and7809.that fixed my protect mode.

Posted on Mar 02, 2010

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I have the same problem, replaced the STK420-610 and PROTECT is still there.

Posted on Jun 04, 2009

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I have the same problm but i puoled the top off and it looks like that the number one disc plastic pice is stuck in the cd/dvd plaer i have not figered out how to fix that yet

Posted on Nov 26, 2008

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Ther audio amp ic is bad & needs to be replaced. mini systems are hard to work on because everything is so compact in the unit. if you can work on electronics, you will find the ic screwed to a big heatsing in the unit. on the ic will be stamped a number. the number is the part number you will need to get. get the exact same number. could be like "stk XXX" or could other letters/numbers. also check for an open fuse. sometimes the fuse goes when the ic goes bad. good luck.

Posted on Jan 03, 2007

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Try HOLDING the 'Standby/On' button, should work. (Worked for me)

Posted on Dec 22, 2009

I found new IC's at this website:

http://richtechparts.com/default.html?s=y

ordered the parts for about $45.00, replaced them, unit works fine.

Posted on Feb 29, 2008

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Yup the STK428-610 mono ICs are bad. Cost over $120 a piece. A new system is $250, so do the math.

Posted on Mar 16, 2007

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1 Answer

Protection light came on what cut off


Amp in Protection - Troubleshooting - Basic Car Audio ...

www.bcae1.com/.../troubleshootingbasicsampinprotect.htm
Some simply shut down and the power light will not illuminate when in protect mode. If the power light blinks then goes off, the amp is either going into protect ...

How do I fix my amp it keeps going into protection mode ...

? 2:00
https://www.youtube.com/watch?v=DQ1bdsm6s2c
Apr 24, 2013 - Uploaded by Nathan West
My MTX 600xd amp light won't even come on. ... Red light comes on. ... one.. and some times it goes into protection... once I turn the car off...

Jan 11, 2016 | Car Audio & Video

1 Answer

How do I reset the protection circuitry on Yamaha RX-A820?


press and hold the 'tone control' and 'info' buttons and press power. This will release the protect. The first thing that show on the display will be the protect code to tell you why it shut down. If it turns right back off, then you most likely have a short in the amp that will need to be repaired.

Jan 25, 2015 | Yamaha Audio Players & Recorders

2 Answers

My teac ag-790a 'protect' error message on display. When I brought it to the audio shop for repair it worked fine; at home again the same problem? What is the problem? Tx.


Hello
Check the putput wirings to speakers. If any of them has short circuit, the set will go to protection mode. You can understand it well, as it did worked fine at the repair shope. The set has no fault at all, but the wirings, connects to it have.
Just power ON the set at your home, without connection any output or input to it. See, it will not show any protection mode display. Switch it OFF. Connect the output to speakers, one at a time, and switch ON the set. Just do it for all other speakers. This way, you can find out, which speaker line causes the set to go to protection mode. Fine out the reason.
Never connect any input to the system, until works fine with out showing any protection display.
I helped you somewhat fine, I assumes.
Ok.

Jan 31, 2012 | Teac Audio Players & Recorders

1 Answer

NAD M3 power light turns red immediately and PROTECT message displays. Amp keeps functioning but volume control doesn't work up or down.


Hello
Check the connection to speaker with this amp, for any short or any other fault. disconnect the outputs, ie, speakers from the amp, and switch it On, and see the protect display comes or not. If it comes, the fault is internal and the set need service.
Your M3 dual Mono integrated amp, is of high output power and its outputs are protected against any overload or short circuit. If the system detect any among this condition specified above, it will show protect mode display.
Never load this amp, as protection display is there, as it may damage the speaker or its internal power amplifier section circuits, may cause more money to get it repaired. OK.

Jan 23, 2012 | NAD M3 Master Series Integrated...

1 Answer

Protect comes on why


Hello
Protection display will come over this type of set, when it is overloaded or system confused condition. Just unplug the device from AC mains socket and replug it after 4 to 5 minutes, and see whether it shows any protect display. If it shows it again, just disconnect the output loads, ie, connected speakers, and check. Again it displays 'protect', the internal circuit, especially the output amplifier circuits has the trouble, and the system need service. if it does not show protect display, after disconnecting the speakers from it, check the speakers or its connecting wires for damage. OK.

Jan 20, 2012 | Sharp Audio Players & Recorders

1 Answer

I called a Denon service center,and the can repair it for $250.00 to $300.00 or less. The problem is Display not lit, and power indicator is flashing rapidly. I tried to initialization of the...


hi,
Blinking of power indicator means the amplifier is in protection mode.First of all remove all the speaker connections from the amplifier. After that power the amplifier and check the protect show or not . if not, then any of the speaker is damaged. If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier have some problem. There are seven amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
For that you need digital multimeter,soledring iron screwdrivers etc
Open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

May 19, 2011 | Denon AVR-885 Receiver

1 Answer

My Kenwood VR-705 keeps on cutting out on me. is there anyway to fix this?


hi,
First of all remove all the speaker connections from the amplifier. After that power the amplifier and check the protect show or not . if not, then any of the speaker is damaged. If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier get some problem. there are six amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
for that you need digital multimeter,soledring iron screwdrivers etc
open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

Apr 23, 2011 | Kenwood VR-507 Receiver

1 Answer

Stereo


If your stereo is showing the protect display, it is an indication of a power shorting. This protection is to avoid serious circuit burnout and could be in the power output stages of the set. You will need to open and check for short in the output drives, the preoutput stages, the speakers or even the protection circuit amp.
It is important to address and check these sections with a votage check, elimination process too confirm the part. this may be a little tough and diffcult unles it shows easily on a continuity test. Helpful. Good day

May 31, 2010 | Kenwood Audio Players & Recorders

1 Answer

Protect appears on display on kenwood kdc 3034


Disconnect all the speaker wires at the receiver and turn it back on. If itdoesn't go into protect mode, your receiver is ok.

Reconnect the speakers one at a time being sure to turn the receiver off each time you connect a speaker and turn the receiver on until your receiver goes into protection mode again.

When it goes into protect mode again, the last speaker you connected has a problem. Trace the speaker's wire to the speaker looking for cuts or shorts along the way.

If you have a multimeter, switch itto ohms and check the speaker for a dead short, if you show a dead short you have a blownspeaker. Hope this helps.

--Matt

Oct 07, 2009 | Kenwood Car Audio & Video

1 Answer

Protection displayed and shuts off


The protect message indicates that the output amp section has a problem. Normally this requires the replacement of the output transistors or the output amp pac. Expect the repair cost to be about $20-$60 for parts plus the local labor rate.
Dan

Mar 22, 2008 | JVC HXC6 500-Watt Stereo System with 5-CD...

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