Question about Sony XM-752EQX Car Audio Amplifier

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No Sound/ lights flashing on Amp

I have a Sony XM-752EQX amp that has all of a sudden quit working. I get no sound from the speakers. The unit powers up with the power light coming on. In addition to that the over current, offset, and thermal lights all light up green and flash continually in some sort of a coded pattern. I can't find anything to tell me what the flashing indicates. They all three flash in the same pattern together. Any suggestions as to what is wrong?

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Disconnect your subs from the amp. If the lights go out then your sub is blown and is putting the amp into protect. If the lights keep flashing even with the subs disconnected than the Amp is toast.

Posted on Jul 14, 2007

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Posted on Jan 02, 2017

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Thus, the problem is internal, within the amp. Make certain that you have selected the proper sound out to the speakers. With the speakers attached, keep switching around from one sound path to the other. Make certain, your source (input to the amp) is proper and the signal is communicating with the amp. If the amp has direct out ports to L/R Center and Surround that you can use wires to connect to the speakers, try that method.

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The amp is in protection. Disconnect any speaker from it, then turn it back on, if it's not flashing, check your speakers with a meter and check speaker wires for shorts. If it's still flashing, you've blown the protection circuit and it needs to be replaced or repaired. Hope this helps

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HI DUDE ,, TRY CHECKING UR RCA CABLE ,, COZ IT MIGHT B UNPLUGED AT UR PRE AMP OR PLAYER ... OR CHECK UR SUB WOOFER WIRE INSIDE THE BOX ....

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Problems with Sony XM-752EQX Car Audio Amplifier


does the amp power on? usually if you cant get any power to an amp, its a problem with the ground connection. did you shave the paint off from the area where the ground wire touches the metal of your cat?

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Keep Trying To Find A Differend Ground Place, I Had This Problem In My Neon

Dec 31, 2008 | Sony XM-752EQX Car Audio Amplifier

1 Answer

Amp went into protect, but front speakers sound distorted too


If the amp still goes into protect mode, the easiest thing to do is disconnect the RCA cables from the amp and see if still goes into protect mode (after turning off/on). If it does, the issue lies in the amp or the wiring to/from the amp (most likely case). Check to make sure no speaker wires came loose and touched +12V or ground (car body). From the sound of it, my guess is something internal to the amp died and will need repair.

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Sony generally drives their power light from a source that does not rely on the amplifier's switching power supply. This means that it's not a good indicator as to the health of the amplifier.

 

As long as you have B+ and remote voltage, it will light up. Since you've tested the speaker and the signal source, I think the amplifier is likely defective.

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