Question about Alpine IVA-D300 Car DVD Player

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I have an alpineIVA-D300 and I think the amplifier is bad. The screen works, radio goes to channels but I get no sounds.I have tested the speakers and they work

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This may help. Alpine typically controls their internal amps one of two ways:
1) menu setting for external amp or defeat internal amp
or
2) top of the unit (with it removed) there maybe a series of switches by channel (front, back and sub) on the unit. My current alpine has the switches on top.

Posted on Jan 14, 2009

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No volume on all left side speakers


Determining the Cause of the Problem Let's assume our system has a head unit, a crossover, a two channel amplifier and two door speakers with only the right speaker working (the left speaker is not working). If the door speakers are behind the door panels then we want to make sure the speaker is the problem before removing the panel. We'll work backwards starting with the amplifier and ending at the head unit. Testing for a Speaker Problem With the vehicle and the stereo turned off disconnect the speaker wires for both the left and right speakers at the amplifier. Now connect the left speaker to the right amplifier output (which we know works). Turn on the stereo system and make sure the balance is set to the middle position.If the speaker still doesn't work then the problem is somewhere between the amplifier and the speaker Testing for an Amplifier Problem Now we'll need to see if the amplifier channel is bad. Put the left speaker back on the left amplifier channel and the right speaker on the right amplifier channel. This returns the speaker wiring to its original configuration. Again, with the vehicle and stereo off unplug the RCA cables from the amplifier's input and switch them so the left cable is in the right input and vice versa. Turn on the stereo system. Testing for an RCA Cable Problem For any intermediate components between the amplifier and the head unit follow these steps for each one. We only have a crossover so we'll just do this once. Begin by testing the RCA cables between the intermediate component and the amplifier. Unplug both RCA cables from the intermediate component's output. Now plug the working channel's RCA cable into the non-working side of the crossover. In our case the working channel is the right so plug the right RCA cable from the amplifier into the left side of the crossover. Turn on the stereo system.
If the right channel continues to work then you know the problem is in the RCA cables between the amp and the crossover. esting for a Crossover or Equalizer Problem At the input of the intermediate component (in our case the crossover) flip the RCA cables around (left to right input and vice versa). Turn on the stereo system.
If the right channel continues to work and the left channel continues to not work then you know the problem is in the intermediate component. Replace or repair this component.
If the problem is now in the right speaker and the left speaker works then the problem lies before the crossover. Turn off the stereo system and return the RCA cables to their normal places.
Testing for a Head Unit or RCA Cable Problem Pull out the head unit from the dash so you can access the RCA cables. Unplug both RCA cables from the head unit. Do not disconnect any other wiring. Plug the right RCA cable into the left channel of the head unit. Turn on the stereo system.

Sep 29, 2016 | Cars & Trucks

1 Answer

Hogar - No sound from Boss Radio after initial installation test.


If you are hooked up to the factory wiring harness i would think there may be a factory amplifier that is not getting power or is bad.

Test the stereo by hooking a speaker up to the speaker out wires from head unit. if it has sound try to find out if there is a factory amplifier.

Good Luck

May 24, 2016 | Cars & Trucks

1 Answer

I have a 2009 GMC Yukon and rear speakers aren't playing


Does the system have an amplifier ?
Circuit/System Verification
Radio ON, Rear Seat Audio (RSA) OFF (if equipped), adjust the fade and balance controls on the radio to test all four channels individually. Each of the four channels should produce clear and even sound.
Without Amplifier Radio ON, verify clear audio is heard from each audio speaker.
?‡'
If audio is inoperative from all speakers, replace the radio.


?‡'
If audio is inoperative from one or more, but not all, speakers or the audio emitted from the speakers is not clear, refer to Speaker Circuit Malfunction - without Amplifier.
With Amplifier Radio ON, verify clear audio is heard from each audio speaker.
?‡'
If audio is inoperative from all speakers, refer to Amplifier Circuit Malfunction.


?‡'
If audio is inoperative from one or more, but not all, speakers or the audio emitted from the speakers is not clear, refer to Speaker Circuit Malfunction - with Amplifier.


Circuit/System Testing
Speaker Circuit Malfunction - without Amplifier

  1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
  2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
  3. ?‡'
    If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.


    ?‡'
    If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.

  4. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
  5. ?‡'
    If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.


    ?‡'
    If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.

  6. If all circuits test normal, replace the speaker.

Apr 17, 2016 | GMC Cars & Trucks

1 Answer

Very week sound


Definitely need more info - such as type of amplifier or receiver, how many speakers you are running, whether the subwoofer is powered or not.
As a simple test procedure: Disconnect all speakers and plug in a pair of headphones. Get a strong audio signal? Good, move on. No signal or week signal, you have an amplifier issue before the audio even gets to the speakers.
Next: Disconnect all speakers, turn the volume down, and connect one speaker to the left output channel. Slowly increase the volume. If that works, do the same on the right channel. Everything OK? You're putting out enough gain on both channels. Sometimes one channel goes bad. You can still listen to your sound in mono moder, or drive two speakers from the single working output. Not stereo, but dual mono. Move on.
Connect left and right speakers but not the subwoofer. Repeat the test. Whatever is left is probably the problem. If the subwoofer is powered, check the power supply or incoming voltage. If the other speakers are driven off the subwoofer or powered from there, that's likely the problem.

Jul 31, 2015 | Audio Players & Recorders

1 Answer

I have a Cambridge audio turntable which looses sound quality about halfway through record, as though it looses one of the channels (on the right hand side). I've tested the speakers, the amp, even had it...


Might be a weak relay or transistor in that channel, they both will stop and reset when overheated. make sure you're ready to test it when it does this again, this may help you locate the bad component. I'm leaning towards the transitor, because they also amplify sound signals in radio frequency.

Oct 06, 2010 | Cambridge Audio Azur 340A 2-Channel...

1 Answer

The radio is on, no sound comes on, all wires checked


Check if your speaker cables are connected very well.

Use a battery remove your speaker cables test them with the battery for signal.

Check and reconnect everything you connected to your bose radio.you will here a sound . take care.

Jan 19, 2010 | ElectroVoice...

1 Answer

I have a MTX 6304 amp, the rear channel has barely any sound and is distorting horribly. Any advice?


YOU MORE THAN LIKELY HAVE A BAD CHANNEL ON THE AMPLIFIER THAT HAS HALF-WAVE OUTPUT, CAUSING THE SERIOUS DISTORTION. USE THE PROCESS OF ELIMINATION. SWITCH THE RCA INPUTS AROUND AND IF THE PROBLEM STAYS IN THE SAME CHANNEL, THEN THE AMPLIFIER OR SPEAKER IS AT FAULT. IF THE PROBLEM SWITCHES TO THE OTHER SPEAKER, THEN THE PROBLEM IS THE RCA CABLE OR RADIO ITSELF. YOU CAN VERIFY YOUR FINDINGS BY STARTING WITH THE SPEAKERS FIRST. SWAP THE SPEAKERS AROUND AND IF THE PROBLEM STAYS ON THE SAME SPEAKER, THEN THE SPEAKER IS AT FAULT AND IS PROBABLY HAS A SHORTED VOICE-COIL. IF THE PROBLEMS SWITCHES TO THE OTHER SPEAKER, THEN THE AMPLIFIER OR INPUTS ARE TO BLAME. BY FOLLOWING THESE TWO METHODS, YOU WILL BE ABLE TO DETERMINE EXACTLY WHICH COMPONENTS ARE AT FAULT. REMEMBER, YOU HAVE AN INPUT, AN AMPLIFIER AND A SPEAKER. THIS PROCESS OF ELIMINATION WILL HELP YOU IN THE FUTURE WITH MANY TYPES OF PROBLEMS. LET ME KNOW IF YOU REQUIRE FURTHER ASSISTANCE.....V
PS: MAKE SURE THAT THE GAINS AND BOOST CONTROLS ARE SET TO THE SAME LEVEL FOR BOTH CHANNELS BEING TESTED. ALSO MAKE SURE THAT THE BALANCE CONTROL ON THE RADIO IS STILL SET TO THE MIDDLE. DON'T WANT THESE CURVEBALLS INTERFERING WITH YOUR TROUBLESHOOTING......V

Nov 16, 2009 | MTX 6304 Car Audio Amplifier

1 Answer

Volume fade


Check to be sure there are no speaker wires touching ground, and that the wires are connected in phase to the head unit.
Front Speakers 5 1/4" Doors Left Front (+) Green Left Front (-) Black/White Right Front (+) White/Red Right Front (-) Black/White Rear Speakers 6" x 9" Rear Deck Left Rear (+) Pink/Red Left Rear (-) Pink/Blue Right Rear (+) Pink/Light Blue Right Rear (-) Green/Red

The symptoms you are relaying definately sound like an internal amplifier problem. It is fading in and out for a reason - usually due to heat.

Have you had the radio bench tested (seperate from the car) to eliminate the car as being the culprit?

Since the radio was run with damaged speakers originally, the output or amplifier power supply on the amplifier may be bad.

As an alternative to repairing, I would suggest investing in a small 2 channel amplifier to power the speakers.

The radios claim 50W per channel, but in reality give 12-15W RMS power.

A dedicated amplifier with built in crossovers and gain adjustments will prolong the life of your speakers and add to the tonal qualities of your new speakers. Instead of turning up the volume on the head Unit, and sending out a distorted signal that will blow your speakers, an amplifier will give more CLEAN power to them, so it will be louder at a lower volume setting.

This will bypass the internal amplifier on the radio, and send a Low Level signal ONLY thru a set of RCA cables.

Good Luck!!

Jan 10, 2009 | Car Audio & Video

1 Answer

I think the amplifier is bad on the alpine iva-d300.


What kind of setup do you have in your car? Stock sound system with just this aftermarket head unit?

Jan 01, 2009 | Alpine IVA-D300 Car DVD Player

1 Answer

Pioneer gm-5000t amp


If the amplifier is powering, but no sound, try disconnecting the speaker outputs from the amplifier and connecting a test speaker to the output channel. If you get sound, then one of the speakers in the car may be bad or shorted out. That can be confirmed with a voltmeter. If still no sound, then you need to check the input to the amplifier. Disconnecting the RCA cable from the input and testing that with an amplified speaker like you can get from Radio Shack will allow you to make sure that the amp is getting signal from your radio.

Jul 13, 2008 | Pioneer GM-5000T Car Audio Amplifier

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