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Option audio OAX502 500W car amplifier "alarm" mode

I have an option audio 500W car amplifier (OAX502) during the install, wires running from amplifier to sub were crushed and either shorted to ground or shorted together, fuse did not blow but amp got hot. red "alarm" light is now on (must be in protection mode?), does anyone know how to fix this problem? is there a reset for protection mode?
any help will be much appreciated
thanks.

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  • Anonymous Apr 29, 2009

    Yeah I got the same prob bro. Except i dont think my amp got hot. I've checked all my connections and stuff a couple of times but i think it has something to do with the amp itself. It seems to have shut down and wont reset or something. Still working on it, if i cant find the prob i'll take back the stupid thing, as its only a couple of months old and hasn't done much work.

    Any one out there with a fix/solution???


  • cjhbrits Nov 25, 2009

    how do I reset my Rx v3900 amp

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SOURCE: Amp Protection Mode

no, your output transistors maybe 2 of them are gone or the small power supply that feeds the other circuitry has become defective.

Posted on Dec 15, 2006

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The Marv
  • 72 Answers

SOURCE: Amp goes into protect mode.

I would definately suspect wiring. If you can use a volt meter. Put it on the b+ to ground and see what the reading is should be 12+ then try the ground to remote wire should be 12+. If it drops below 12 volts when car starts. Recheck wires for loose connection. Also double check the wire you have the remote wire connected to. You might even want to disconnect from the amplifier and use a jumper wire from the positive terminal on the amp to remote on the amplifier and see if it stays on then. If it stays on you will have to find the loose connection or find a different wire to get remote power.

Posted on Feb 05, 2007

cheebster
  • 39 Answers

SOURCE: amp heats up and goes into protect mode

Hi Saint108. You're describing it well, and i know what the problem is already. The MA audio amp, can't hold with a 2 ohm load. It's too low for that amp, that's for sure. Those are budget amps and they are not well built enough to handle low ohm setups like that. It's overheating and there's no ways around it.. Other than wiring your subs differently ! Just wire your sub directly (not in parallel) in a 4 ohm load, you will notice it will stop overheating that much. Do it quick, you'll most likely fry your amp giving it such hard work !! The HUM you're hearing could be related to it also. Try that, and keep me posted on the status. Thanks ! Cheebster.

Posted on Jul 02, 2007

osborne382
  • 306 Answers

SOURCE: Amp stuck in protection mode.

check to make sure your ground wire is attached to a clean metal surface no more then 18" away from amp. check all wires to ensure none are touching other terminal. all else fails remove one sub and see how it play, if its works great switch subs. could be a defective amp. if it is the amp and you payed for it with a credit card or bank card you can do a charge back from the bank to get your money back if the store wont replace it. thell the bank "you want to do a charge back cause it wasnt as discribed).

Posted on Nov 12, 2007

  • 125 Answers

SOURCE: car amplifier install issue

check the remote cable from your head unit to the amp first.

Posted on Apr 20, 2008

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