Try shutting off and hooking one spk up at a time. My guess is shorted voice coil.
NO KENWOOD amp model stated at all (vast there are)
wild guess speaker or wires to them shorted or open.
SOURCE: car amp
The most common reason for this is shorted output transistors. To confirm that the problem is in the amplifier, disconnect all speaker wires and the RCA cables. If the amp still goes into protection, check the DC voltage across the B+ and ground terminals. It should not drop below 11 volts. Also check the remote voltage.
If the amp continues to go into protect with no external connections (other than B+, remote and ground) and the voltage remaiins above 11v, the amp is defective.
SOURCE: my amp is on but the protection light stay's on!!
Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If the protect light remains on, the amp likely has blown output transistors.
SOURCE: kenwood amp kac-x401m
How long will the bass play before the amp kicks into protection mode and how loud are you listening to it? I've noticed with my amps that if they don't have enough air flow they will get hot and kick into protection mode. They will also kick into protection mode if you are running it at more than it can handle. Check your adjustments on both your amp and the head unit. Make sure you are not running more bass than the amp can handle.
SOURCE: fusion car amp turns on then gos in protect mode
look behind ur headunit could b a wire touching or a piece of metel
SOURCE: MY KENWOOD CAR CD PLAYER IS SAYING PROTECT??
Hi,
Kenwood head units show "protect" when there's a problem with the speaker outputs. This might mean a shorted speaker wire, a blown speaker, or an internal defect in the head unit. Once the condition that's causing the "protect" mode is fixed, the CD player should be back in normal mode the next time you turn it on.
If it's staying in "protect", then you'll definitely have to remove the stereo and do some troubleshooting to fix it. Many car audio stores will do system troubleshooting, for a fee. If you want to do it yourself, here's what you need to do:
Pull the Kenwood unit from the dash and disconnect all the speaker wires. Turn it on and see if the "protect" message displays. If it does, the stereo has an internal defect and will need to be serviced. If it doesn't, then turn it off, and re-connect one speaker. Turn it on again and see if it displays "protect".
If it works with a single speaker connected, keep re-connecting the others until you identify the speaker that's causing the problem. There may be a wiring problem or defective speaker in that location.
If it displays "protect" with a single speaker connected, then disconnect that one and try a different one. If all the speakers cause a "protect" mode, then you're probably back to a defective head unit, unless your friend managed to blow all your speakers at once.
Thanks,
Do you mean KENWOOD VR-209?
Register and download the manual for free at retrevo.com
http://www.retrevo.com/support/Kenwood-VR-209-Receivers-manual/id/480dj179/t/2/
Page 21 descriebs the microprocessor reset for USA & Canada; or other countries.
Generally speaking, an amp protects 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.
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