Question about Sony TA-FE370 2-Channel Amplifier

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I have a Memphis amp that isnt working

I recently put a new battery in my car, just incase this is important, but my memphis power reference amp isnt working now. i have two amps and it was working fine before the battery switch then started going out and is now completely out. however my 4 channel amp is still working fine the 2 channel amp isnt even coming on. but they are ran by the same power cord. please tell me my amp isnt fried.

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  • jlmannboy125 Jul 03, 2009

    i checked my fuses and my battery connection, the only thing i could find tonight was a wire severly bent that is connected from the amp to the subs. but the wire was still somewhat connected. worth replacing?


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Check all connections completely.

Posted on Jul 03, 2009

  • Ronado Panaligan
    Ronado Panaligan Jul 03, 2009

    make sure you are getting 12V or battery voltage(I said 12V to simplify everything, a fully charged battery is actually 12.6 and 12volts is actually 10% charged. when the car is running you get around 13.5 to over 14 volts.) the best way to isolate problem, and to simplify eveything. Disconnect your amp. Test it away from the others, If you connected it yourself, that means you pretty much know how to connect them. This is how you test an amp.

    Have a battery ready, and make sure you take your time on this, and have a neat area to test it, don,t do it under your hood, Do it on a table so you can work comfortable.

    Have all your wiring ready to test it. A speaker wich dont really have to be a big one, but you wanna turn the gain down on the amp so you wont burn up the speaker.

    You would really need a digital multimeter, You can buy a cheap one for ten bucks or so, and they are very usefull, you cannot test the amp without that.

    If your sure the connections are good to the amp here is how to test it.

    Remove the amp from the car( it is not a good idea to test it there because all the wiring will confuse you because you have other amps hooked up.

    You will need a pair of RCA cables( the low input cables like the one you use for the amp) If you dont have one( you can buy a pair at a 99 cents store for a buck. Then you need a sound source with an rca output connection.(a cd player, a stereo etc.) You can use an mp3 or ipod, but you need adaptors. Then you need speakers if they are small speakers, ( turn down the gain if you are using small speakers, don't worry it wont burn it out) Last a 12V battery (car battery) and the wires to hook it up( speaker wires and power cables.

    Hook up the spkeakers, power cables etc and the sound source via RCA cables. Doulbe check all connection before powering up( hooking up the remote wire)

    If everything is connected good and no sound, and the light indicates it is on then it is broken. If it is one but there is a protection light that is lit all the time then there is a shorted transistor inside. replacing it would solve the problem. If it is lit but no sound, then either the internal DC_DC circuit or the power to the low signal circuit is malfunctioning. I maybe able to help you fix it if you sent me a photo of the inside at I will edit the pic in "paint" and label each circuit section. Then show you what to do. If you are patient, you can do it yourself, and learn how to fix a car amp!! aint that great? Hola bck


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