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My mtx jackhammer amp recently stopped working and I don't konow why. The light with a lightning bolt is flashing and i lost the manual so Im not sure what that means.

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It means that there is a wire shorted somewhere on your speaker wires. Or you could have blown one of the speakers. Disconnect your speaker wires one at a time. When the light quits flashing then you found your problem.

Posted on Sep 14, 2010

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Mtx jackhammer jh300


Try another set of speakers to see if that works. If so, it could be your subs. Also, check ohm reading on each sub.

May 13, 2014 | Car Audio & Video

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Stopped working suddenly. No PF lights, no smell. Power light turns on sometimes. Fan turns on. Wired properly. No power to sub/subs.


check the fuse holder an the power holder on the inside of the amp an just to see check ur ground some time they lossen

Jun 21, 2011 | MTX JackHammer JH600 Car Audio Amplifier

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Mtxjh1200 , the light with the lightning bolt blinks and subs make a thumping sound like a heartbeat


ur rca wires or its the holder itself if the subs do it when the rca wirtes are off the oits the bord inside the amp

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What does the ligtening bolt symbol mean that flashes orange on an mtx rfl 600d amplifier


orange lightning bolt on rfl600d is a short circuit..i learned this with mine when subs caught fire in my trunk...loose terminals, or incorrect wiring for dvc was cause of it on mine.

Dec 30, 2010 | MTX RFL600D Car Amp

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It wont turn on, it give me a flashing light on the flash sign..


please run a thicker power and ground if u have already check ur fuse on the power make sure its a big enough amp fuse for the amp

May 17, 2010 | MTX JackHammer JH600 Car Audio Amplifier

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My amp will go into protection mode when i turn my truck on, it flashes green and beats once,then turnd protection mode on... whats wrong with it??


im not sure what is wrong but i do know if you keep it hooked to subs it will fry them because that happened to my friends jackhammer amp and 2 12" mtx jackhammers

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Mtx jh600 feed back in subs light on amp the bolt is blinking


check that the ground wire is bolted tightly to the chassis of the vehicle.

Aug 08, 2009 | MTX JackHammer JH600 Car Audio Amplifier

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When I turn my car off a little light on my amplifier stays on! It looks like it's a lightning bolt?! I want to know if it is bad that that light stays on when I turn my truck off?


Hello rlpate1, Most likely whoever installed the amp used speaker level inputs and the "smart engage" turn on feature instead of a remote turn-on wire from the head unit. Just like your dome lights, the amp light should go out after a while, exactly how long depending on MTX's internal setting. I wouldn't worry about it as long as it isn't discharging the battery and causing your truck to not start. However, it's possible that the 12V turn-on terminal is being used and the head unit or whatever it is wired to is supplying a constant turn-on voltage even with your truck turned off. In this case, you definitely need to fix it. Otherwise, it will eventually discharge the battery and you will not be able to start the truck. Check the switch marked "smart engage" to see if it is on or off. If it is on, you're probably OK. If not, have your installer check it out. Hope this helps.

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No LED power lights go on


the light with the power light(middle) is a blue/purple faint light try checking it out at night.The squiggy(as heat waves) will only light when the amps shuts down due to thermal protection(wait for it to cool). The bolt/yellow (short circuit) will light when there is an electrical overload in any of the wires(check +ve leads).

May 26, 2009 | MTX JackHammer JH202 Car Audio Amplifier

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