Re: System automatically shuts itself off after a few...
I have no Idea, I have My JVC system sitting in a closet. I got it in 2004, and It was working fine, and all of a sudden it stopped and went into protect mode. I have no idea what to do about it.
But this is what I did.
I unplugged it and I let it sit for 24 hours to see if it would Reset the microprocessor, that did nuttin'. So I took it apart ^_^ That was fun! and I checked all the wires for loose connections, and I made sure te cables were in there tight. My unit is a pretty old though, I have a surround sound system, but usually a good blast of canned air may clean the circuit board and the components.
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Generally speaking, an amp protects itself from heat, shorts and overloads.
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.
If protect is coming up on the display, it means the system is detecting a short somewhere on one of the speakers and so is turning the amp off to avoid damage. Check all the connections at the back of the amp to ensure they are not shorting, and at the back of each speaker, if nothing is found there, check each wire for damage (like squashed or rodent damage).
You got to open this puppy up and replace the 2 bad IC boards. Known problem with this brand stereo. Defect in the IC boards causes your fuses to blow and they will keep blowing every time you try to put new ones in. Cost for parts will be about $200.
I need a little help on this one. Did it go into protect after the move or was it in protect mode before? If it went into protect after the move, did it get dropped or roughly handled? Sounds like something got knocked loose in the move. You should be able to open the unit up and check the connections. Reseat all connection whether they look loose or not. Sometimes it only takes a very small bump to get the connector acting up. After reseating all connectors, if it still does not work let us know.
A desperate longshot but the only i have to offer:
It might be a problem with the electricity.
if possible try and install it at another location in your house, using other electricity sockets.
If the problem is solved by relocating the system, you might be looking at wiring problems (audio equipment can be very sensitive to that), if changing anything in the installation process solved the problem then the problem was probably due to bad grounding and "loose" electricity.
Try making the installation as "clean" as possible, avoid tangled wires and stressing a single socket with too many electric appliances.
If the problem persists, and you are still under warranty, I suggest contacting your local JVC dealer. If you're out of warranty I suggest locating a professional repair person.