Question about JVC Audio & Video Receivers

1 Answer

My shelf system says protect when i turn it on & i don't know if thier's a way to reset it. model#ca-mxgc5

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 624 Answers

The only way to reset these units is to unplug it from the wall for about 4 to 7 days, then plug it back in and see what happens. They do not have a reset button, and it takes a while to reset because they have a capacitor in the microprocessor circuit that holds the voltage for it for a good long while. The type of capacitor they use acts much like a battery and takes a long time to drain.

Your unit is in the protect mode, and it happens when there is a blown channel in the amplifier circuit or a power supply failure. The only way to determain exactly what is wrong would be to troubleshoot the unit using the proper tools. If you have a multimeter and soldering equipment you may be able to do this yourself if you have some experience with electronics. If you do not, you really should just take it in for repair at an authorized JVC service center. They would have the schematics and ability to troubleshoot it properly.

If you have the tools needed and would like to try it yourself just let me know and I will be happy to guide you thru the process. Please be aware that troubleshooting electronics by somebody with little or no experience with it can often result in more damage than you started out with in the first place. Having said that, if you are willing to try, I am willing to help. But if you end up with more damage than you started with you can not hold me responsible, I have warned you

I work at an authorized JVC repair center and have repaired many of these units over the years, so you would not be getting help from somebody who doesn't know what they are talking about. So just let me know if you want to take a crack at it.

Dave

Posted on Oct 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Power protection circuits won't reset


What brand/model of receiver are we talking about?

Jan 02, 2014 | Audio & Video Receivers

1 Answer

I lost sound on my Sony DA4ES. Only the preouts work. I am hoping that a factory reset would help but I don't know how.


So at least you understand the equipment enought to know the pre-outs work. What's that leave - the amps. Did the protection relays click on power-up? If not, it may be under duress.

Boilerplate:

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.

OR...

http://www.retrevo.com/support/Sony-STR-DA4ES-Receivers-manual/id/387ag919/t/2/

Find the manual and carefully evaluate every indicator on the face to make sure you understand what they mean and how they might affect operations. Look for Speakers NOT enabled, Muting ON, a Tape or other input inadvertantly selected. If you fail to find the errant setting, treat it like a new install and set it up all over again according to the manual.

OR...

Page 21 of the manual shows how to do a factory reset.

Sep 09, 2011 | Sony STR-DA4ES Receiver

1 Answer

I have Phillips home theater system model FR 965. When I turn the power on it powers up for a few seconds and then shuts off. I have done some searching online and found advice saying that it may just be...


It's not a fuse. Fuses don't self-heal allowing another try.

Generally speaking, an amp attempts to protect 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.

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

Jun 11, 2011 | Philips FR965DHT Receiver

1 Answer

How can you tell if it is simply time for a new receiver? Recently my Sony receiver kept continually going into protect mode. Now using the same speakers and wires I have swapped out the Sony...


Mismatched amp/speakers combinations can contribute to protection issues. You don't mention any models so it's hard to say. Suffice it to say you shouldn't piece out parts of all-in-one systems without careful consideration of how they will get along with other brands or models.

Generally speaking, an amp attempts to protect 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.

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

Apr 28, 2011 | Audio & Video Receivers

1 Answer

System turns off and flashes "Protect"


Hi, you have a short somewhere along your speaker wire. When the receiver goes into protection mode, it shuts itself down so you don`t blow your on-board audio amp.

If you see protect come up on your Receiver, you have got a short somewhere. What`s happening is your receiver is sensing an overload somewhere in your system and if it does not go into protection mode and shut down , there will be permanent damage done.

You will need to check the speaker wire if it is not bridging somewhere or sometime else..

Have a nice day..

Feb 18, 2011 | Sony STR-DE575 Receiver

1 Answer

On super bowl sunday, my newphew turned the volume up on my receiver. blew something. model SA AX530. Now when you turn it on it says "overload". what do I check ? How do I fix it ? ...


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


Overloads can be from excessive periods of high output 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 hands-on tech.

Feb 09, 2011 | Technics SA-AX530 Receiver

3 Answers

Pioneer VSX-1019 with a flashing red MCACC


you can "release" the error by pressing the "down arrow" and the "zone 2 on/off" for 2 seconds.

Mar 11, 2010 | Pioneer VSX-1019AHK A/V receiver

1 Answer

I have a recently purchased RS 2664 RCA shelf


If the wires got crossed and/or touched each other at all - that could certainly damage the amp(s).
Also - if the system is not made for extra speaker - that would change the ohmage - and that could aslo damage the amp(s)..

Or maybe the system designed to protect the amp(s) was damaged..

Hope this helps !!
Please rate me good ;o)

Jul 11, 2009 | Audio & Video Receivers

2 Answers

Pioneer power LED is Blinking


If that didn't work, with the power off try holding Tune + and Auto surround/stream direct buttons for a few seconds to reset the protection circuits. Make sure to keep 8" of empty space above the unit for air, as overheating can cause this problem. If it fails again, there could be bigger problems, so get it checked

Mar 29, 2009 | Pioneer VSX-918V Receiver

5 Answers

Fisher ca 9025 amplifier


For those who accidently put thier CA-9025 in standby mode by hitting the timer button and no longer have the remote, I figured out how to turn them back on.

Turn on the power button and press and hold the Tuner button for at least 10 seconds. it should come back on :) Hope that helps.

May 08, 2007 | Fisher RS920

Not finding what you are looking for?
Audio & Video Receivers Logo

Related Topics:

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top JVC Audio & Video Receivers Experts

 Elex
Elex

Level 2 Expert

49 Answers

Cindy Wells

Level 3 Expert

4762 Answers

Rod
Rod

Level 2 Expert

224 Answers

Are you a JVC Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...