The amp worked fine for about 2 years, then one day the sound shut off out of nowhere, and with the sound the blue light shut off. Then the light and sound would come back on for awhile and then shut off again. This occured randomly for about a month. Now the sound is never on and neither is the blue light. When i start the car up the fan in the amp runs as i can feel the air if i put my hand over the fan. I have already tried unplugging everything and letting the power drain out and plugging it back in. This did nothing (Kenwood Tech support told me to do that). Is there anything else i can do before taking the amp to a repair shop?
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Re: Fan still running, no blue light, no sound
You will definitely need to have it repaired. It sounds like the overload protection kicking in to prevent further damage. If you need any assistance locating a repair facility please let me know. Please take a moment to accept and rate my solution accordingly. Thank you, Lee
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Test your subs on another amp....If they are fine then try running different rcas in your car from the stereo to see if they are the culprit. If still no sound probably your output on your amp is gone.
It is possible that the set has gone into an error shut off. Please disconnect the power and allow it to cool off. remove the sub woofer connections if the amp does not turn on again. check for any short in the coils. reconnect the sources once again , making sure that the source is coming into the amp. If there is still no output, remove the cover and check if the main amp is shutting off due to any short in the output. You will need to confirm this out as you had run this a little too much in heat. replace the shorted mosfets if confirmed. hope you get this right. Good day
There could be any number of things wrong with your amp. Normally there are diodes that protect against this sort if thing however applying reverse polarity on capacitors, regulators and FETs can cause untold damage. You will need to trouble shoot the amp by measuring voltages around the power supply.
might have roasted your speakers voice coils a little which may be sending the amp into protect mode throw a speaker on it that you know works and if it doesnt trigger the protect circuit then you probably have a blown or almost sub.
sounds to me like you are overheating the amp, try down tuning the peak level of the amp, and also if there is anything around the amp clear it away, check if the fan is turning on, you may need to replace it,
Does it happen at all volume levels?
What is the gain setting on the sub amp?
Have you checked for 12V @ remote turn on after problem occurs?
Sounds as if the remote turn on relay inside the amplifier is losing signal, or has become damaged. If the protection light does not light up, the problem is not thermal, shorting, or high/low voltage.
The amplifier is in need of repair. This is not an end-user fix. Looking at about $50 to repair.
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