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I had the same problem. Certain digital frames will only play certain music files. The one I had would only play mpeg4 & avi files for music. If its not noted in the instructions, serach by the make & model of your digital frame.
Faulty RCA cables, Or worse possible solution is if your amp stopped playing when it was pumping at high volume, you may have blown the RCA connectors inside your head unit Or inside your amp. If possible try another known good working amp with the wires you already have, If same happens, try different RCA cables. If problem persists after trying these, Its your head unit RCA connecters or amp RCA connectors. To rule out your amp connectors, try your amp in a friends car if possible, to rule out your head unit, try another good known working amp in your car with the wiring you already have
Red- 12 volts switched (ignition)
Yellow- 12 volts constant
Blue/white stripe- remote amp turn on/ power antenna
If you have any orange wires there for the Illumination dimmer. (head unit dims when you turn the lights on). The white and gray are front speakers and purple and green are for the rear, solid being + and black striped being -. (gray and purple are right channels)Make sure that the RCA plugs go to the input side of the amp. I hope this helps, Ray
1)When you connected the amp to the head unit, did you run two pairs of RCA cables for front and rear reference or did you only run one set of RCA cables from the rear out to the amp?
2)If that's not the case and you did ran two sets, on your amp, swop the rear and front RCA cables. If the rears go quiet and the fronts are loud you now know the issue is either in the cables or how the head unit is set up. If the fronts are still quiet, check your Amp's gain, frequency and filter setter settings (if available). If those settings don't change anything you may have a faulty amp.
3)Check speaker connections, seems trivial, but you never know.
Message me back if nothing works and/or you get stuck.
The RCA inputs of the amp are many times NOT tied to chassis ( the chassis of the car ) ground.
Same goes for the RCA outputs of your head unit.
The speaker outputs of your amp SHOULD NOT EVER be tied to chassis ground.
make sure that no speaker wire from the amplifier is touching or attached to ground.
Make sure that your amplifier ground (GND )( of the 3 power inputs.....GND, +12V, Rem) is securely mounted to a bare metal spot on the frame. Best practice is to have the amp GND, and the head unit GND at the exact same physical point.
Make sure that your RCA cable shield ( not the center tip, but the part around it ) is not touching the chassis.
Make sure that you have not nicked the wire while installing it and are accidentally getting a connection to the frame of the car.
Make sure that the head unit is grounded properly.
IF for some reason you have an equalizer between the head unit and the amplifier, make sure it has its own switching power supply INSIDE the EQ.
Bad grounds are a pain to troubleshoot......best of luck....Rob