stereo problem

I purchased a JVC KD-G720 head unit and box last year in december. Today while out driving I think the box overheated. I have a noisy engine so the volume is always cranked to about 27-30. Now for some reason when I push it to that point the stereo shuts itself down and restarts along with the speakers. Meaning it flashes like it has no power then comes back on. I checked the ground wires and its perfectly grounded. When I play the stereo at a lower volume it works fine, but as soon as I push it to the normal volume where I can acutally hear it, it cuts out. I think the acutal box may be bad not necessarily the head-unit. Is there anyway for me to purchase the box and not the head unit? or can someone tell me what the issue is? Im a computer guy not a car guy.



thanks,

Jason

What are you talking about when you say "box"?

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Like the actual CD/Player box. I can disconnect my head unit display. All thats left at that point is the slot for CD's. Is there anyway to just replace that UNIT not the head unit display?

Yes.  The changer (box) is connected to the head unit with a tangle of wires that are called a harness.  You can disconnect that harness.

I doubt that the changer itself is overheating.  The amplifier is in the deck that you surmise to be working correctly.  Give it some time...keep the volume level at a point where it behaves...and see what you want to do from there.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

I checked the wiring over again and the connection in the back of the deck is securely connected. How do I know if its a blown speaker megaman? I mean it works up to a certain point if i keep it at a low volume....

Does the unit cut out ONLY when playing CDs on the changer, or does it also do it when using the dash CD slot or even the radio?

Unless the problem happens ONLY with the changer, I would suspect a problem with the headunit, a bad wiring connection, or a bad speaker overloading the amplifier.

The quickest way to check for a bad speaker would be to use the fader and balance controls to play each speaker one at a time, and listen for distortion or different sound levels. Test each speaker at a variety of volume levels.

It sounds to me like your head unit is shutting down.  Could be defective (JVC is not very reliable) or could be a bad speaker.  What speakers are you driving?  What is their impedance?  Have you checked all the speaker wires to make sure nothing has been damaged or is shorting out to the vehicle chassis?

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I bought a package deal from 4wd. I have a 1970 CJ7 Jeep. The boxes came with 2 speakers and 2 basses. see the information below:

"A unique way of improving overall sound while adding bass to your Jeep! Quad-Pods will enhance your existing audio system by incorporating 6-1/2 speakers in an unexplored area of your vehicle, along with 8 subwoofers to ignite that nagging low-end audio void! The Quad-Pods provide a tidy factory appearance in all CJ7 and Wrangler models. They fasten to the wheel wells and allow uninterrupted use of fold-n-tumble rear seats and soft-top hardware, up or down. The pair of Quad-Pods would come with two 8 Legacy subwoofers, each rated at 400 watts rms and two 6.5 Pyle full-range speakers rated at 180 watts rms. All the speakers feature poly-composite cones to withstand the elements and non-fatiguing rubber surrounds. Instructions, hardware, 8 metal-mesh grilles and fiber-fill are included with each pair of Quad-Pods. Powering the pods with an external amplifier is recommended to experience their full potential!"

https://www.4wd.com/productdetails.aspx?jeep-sid=360&plID=1191&partid=9226

DYohn] wrote:

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It sounds to me like your head unit is shutting down.  Could be defective (JVC is not very reliable) or could be a bad speaker.  What speakers are you driving?  What is their impedance?  Have you checked all the speaker wires to make sure nothing has been damaged or is shorting out to the vehicle chassis?

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In case I do end up buying a new head unit, what would you recommend?

I see names like Legacy and Pyle.  Both flea-market brands, and both likely to fail.  I suggest if you check ALL your speaker wiring and it is OK, then you need to get your speakers and your head unit checked out by a professional (unless you know how to test them?)  If you don't have damaged or loose speaker wires, either a speaker has failed or the head unit has.  In either case, you have something defective in your system.

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Any place you would recommend taking it? IE / Pepboys,etc?

I've been posting on another fourm and they made me realize that last night while driving home while the stereo issue was occuring, the headlights were dim. I've been told that there wasn't enough power to go around so the head unit was shutting off in defense. I was told to buy a HO alt. In order to charge the battery. Any other suggestions?

Took the battery and alternator to autozone and had them tested. Turns out the alternator was bad. fixed.