Question about JVC MX-K30 CD Shelf System

1 Answer

No noise coming out of speakers....they are installed correctly, but nothing is coming out.....the screen says "protect" not sure if that has anything to do with it

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers

Sometimes electronics will do something cruel and humiliating that will frustrate the devil out of you. It may be the amplifier that is acting up or probably refusing the stereo to work, there is a lot of systems that may work, some that will half-way work, and some that will not work.

Posted on Jan 23, 2015

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My subwoofer powers on, but I get no sound out of speakers or subwoofer and all of connections are correct.


First off....never connect a speaker when the amp is on or vice versa. Second, I would get a tone generator and test that the speakers have not been ruined and check the amp to make sure you did not blow that. Most amps have a protective circuit to prevent damage from over heating or hooking up wrong. Also make sure that you have enough output wattage for the way you have them wired..

Mar 16, 2012 | Aspire Digital AD-150PSC Subwoofer

1 Answer

When I try to turn the amp on, all I get is a flashing red light flashing beside stand by. Nothing comes up on the screen and nothing seems to work. It's always worked fine before, today it shut off on...


It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be with your output drivers. Please check for short on the outputs fitted for both the channels. Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise which can be a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board. Maybe the protect circuit by itself is shutting off due to a faulty bias or there is a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the amplifier comes out of the protect mode then check for short on the speakers.

Mar 14, 2012 | Onkyo Audio Players & Recorders

1 Answer

Pioneer VSX-D511 5.1 Channels Receiver over heated and now won't turn on?


It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be with your output drivers. Please check for short on the outputs fitted for both the channels. Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise which can be a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board. Maybe the protect circuit by itself is shutting off due to a faulty bias or there is a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the amplifier comes out of the protect mode then check for short on the speakers.

Dec 04, 2011 | Pioneer VSX-D511 Receiver

1 Answer

My Sony STR-DE597 receiver makes a clicking noise when you hit the power button but nothing comes on.


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.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

Sep 10, 2011 | Sony STR-DE597 Receiver

1 Answer

The word "Protected" keeps coming up on the


When the word protect comes on it means there is a load problem, first! turn off the receiver, next remove all wires and speakers. Now turn the unit back on and make sure the volume is turned right down, this will reset the processor controller ic, if the word protect stays off it means there is a short in wires or one of the speakers. on the other hand if the word protect comes on when the receiver is switched on "without wires and speakers" you have a short in one or more of the audio output ic's in the receiver that will need a tech to correct.

Jan 25, 2011 | Sony STR-DB830 Receiver

1 Answer

PROTECT AND PUSH POWER IN THE VISOR.NO SOUND,NO NOTHING WHAT CAN I DO?


This happens when the speaker wires are not connected properly. Remove all speaker wires from the back of the unit, and re - install them, in the correct order and with the correct polarity (white stripe on wire to red terminal, no stripe to black terminal)
Hope this helps.

Jan 24, 2011 | Sony DHC-MDX10 Shelf System

1 Answer

No sound from cenre and rear speakers


Is there an output section for the speakers on the back of the receiver? if so, make sure to properly install the speaker wires into the correct connectors. It should be the same as for the front speakers. If not, then you will not be able to install center and rear speakers.

Make sure there is nothing wrong with the speakers, or the wires them selves. If you are positive that everything is installed correctly, try using a new batch of speaker wire. If the speaker wire is pre-installed or already attached to the speaker from the factory, you might have to call and report a faulty product or try to find the break in the wire yourself. To make sure the speakers are working properly, be sure to plug them into the same connector as the front speakers to see if they receive the signal. if noise comes out of them when plugged into the front slots, then the speakers themselves are fine, and it is an issue with the wires or the unit itself.

Last, if it is not the speaker, or the wires, then you will have to remove the cover from the receiver or remove the wire inputs from the back of the receiver and make sure there is no connectivity problems with them. There might be a frayed wire, or a wire that has come loose, or a soldering issue. If so, you can try to tackle it yourself, or you might have to bring it into a repair shop, or call Sony.

Hope this helps at all. :D

Last, if you have tried new wires,

Aug 09, 2009 | Sony Audio Players & Recorders

1 Answer

Sony STR K840P, protect mode is flashing,no sound,nothing come out. When starting every thing is fine for 20 or 30 seconds and the "protect"start to flash and nothing geht anymore,everything is blocked


This is a classic problem. One of your speakers is miss wired and or your speaker wires positive and negitive leads are touching. Check all connections from the back of the reciever to the back of the speakers to make sure your positive and negatives are correct and that none of the wiring is crossed or touching one another.

Jul 24, 2009 | Audio Players & Recorders

1 Answer

Flashing protect


the protector comes on to keep the amp from further damaging itself or the speakers. The buzz you heard was probably 60HZ line buzz from the main DC supply conducting full current through one of your speakers through a damaged amplifier transistor. Your stereo will need professional repair. The protect circuit basically opens the speaker relay (and sometimes shuts down the unit) to prevent this DC voltage and current from getting to your speakers until the problem is corrected.

Jun 17, 2009 | Onkyo TX-SV727 Receiver

1 Answer

PROTECT appears on screen, won't function


try changeing the red an yellow wire an check to make sure u got a good ground

Apr 25, 2009 | Car Audio & Video

Not finding what you are looking for?
JVC MX-K30 CD Shelf System Logo

Related Topics:

99 people viewed this question

Ask a Question

Usually answered in minutes!

Top JVC Audio Players & Recorders Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

74383 Answers

 Grubhead
Grubhead

Level 3 Expert

5151 Answers

Are you a JVC Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...