Question about Lightning Audio b2.250.1 Car Audio Amplifier

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Amp problem i have a lightning audio b2.300.2 amp and when you turn it on the red protect light comes on 3 seconds later green light comes on and it will put out a little sound ,the side with the power terminals is dented so when you screw the wires in it sparks against the body(ground)iv hit it a few times not meaning to ,do you think that's the what happened to it

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  • the frankste May 17, 2008

    how would i fix it

  • the frankste Jul 01, 2008

    when power is connected to the speaker wire it works fine and the protect light goes off why is that

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Are you sure that the terminal isn't shorted to the case of the amp?

If it's not, the amp probably has a shorted output transistor.

If you want to repair it yourself, read through the following page. It explains the basics. Let me know if you have any questions.

Basic car amp repair primer

Posted on May 17, 2008

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I have checked all connections to my amp battery,head unit,remote or trigger wire,fuses,power cable,rca leads,ground wire,amp has a green led light on it indicating if it works ok,red if it`s not,light...


Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.

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My amp is stuck on protect mode. what do i do? its a lightning audio. the green light is not on the only light is the red protect light


the amp will need to be repair because it has a fault that it is seeing internally. so not much you can do other than buy a new amp or get that one repair. probably cost effective to buy new. hope this help. good luck

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Sounds like you have an ohm problem, Tryy hooking the positive from one speaker to the negative on the other speaker. Then hook the negative from the first speaker to the negative on your amp and the positive from the second to the positive on the amp this will drop your ohm load and the amp should stop going into protection.

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It sounds like the amp has shorted output transistors. They would need to be replaced.

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