Amp has power but no sound from speakers

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Thank you to our community and to all of our readers who are working to aid others in this time of crisis, and to all of those who are making personal sacrifices for the good of their communities. We will get through this together. Updated: July 1, References. If you like your music crisp and loud, you need a good amp in your setup. Unfortunately, amps break down time to time, although they are relatively simple to diagnose.

How To Repair Amplifier No Sound

Wiring problems, from blown fuses to damaged wires, are the most common issues. With some sharp troubleshooting, you can often fix an amp without ever taking it in for service.

amp has power but no sound from speakers

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Together, they cited information from 23 references. Learn moreCar audio systems can be tremendously complex, and car audio system problems are often difficult to root out. In addition to having all the same components of home audio systems, car audio systems are also subjected to temperature extremes, vibrations, and other stresses on the road. So while car audio amplifiers are just one component among many, the problems they can introduce are vast and varied.

Some car audio problems that are commonly attributed to amps include sound distortion, no sound at all, and even bizarre sounds like farting. Some of this can be caused by a broken amp, but all of them can be caused by other underlying issues that will still be around if you try to fix the problem by throwing a new amp at it.

In order to turn on, your amp needs to have power at both the remote and power wires, in addition to a good ground. If the remote turn-on wire doesn't have power, your amp won't turn on. The remote wire acts essentially like your finger flicking a switch, where your finger is battery power, and the switch is a mechanism inside the amplifier. The remote turn-on wire usually comes from the radio, in which case your amplifier won't turn on if the radio isn't on.

So if there is no power at the remote terminal on your amplifier, the next step is to check for power at the corresponding wire where it connects to the radio. If your amp is wired incorrectly, and the remote turn-on is connected instead to the power antenna wire on the head unit, you may find that the amp only powers on sometimes.

In this specific situation, the amp will usually only turn on when the head unit audio input is set to AM or FM radio. The power wire is the next thing to check if you find no problems with the remote wire. This wire will be much thicker than the remote wire, and it should have battery voltage. If it doesn't, you'll want to check for any inline fuses and verify that the wire isn't loose, corroded, or shorted out somewhere. If the remote and power wires both check out okay, the next thing to look for is continuity on the ground wire.

If everything there checks out, then you will have to rule out problems with individual components.

What to Do When Your Car Radio Suddenly Stops Working

The first step in diagnosing an amplifier protect mode light is to simply unplug the speaker wires. If you notice that any of them are blown, then that may be the cause of your problem.

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If you are unable to find any problems with your speakers, RCA patch cables that are grounded out or otherwise faulty can also cause the protect light to come on. To check this, you can simply hook up a set of good RCA cables to your head unit and amp. If that causes the light to turn off, replacing the RCA cables will fix the problem. In-home audio setups, clipping is typically caused by an underpowered amp or inefficient speakers, but loose or burnt wires can introduce similar problems in cars.

This is a pretty easy process if you have access to both the head unit and the amp — simply unplug the RCA cables from each unit and reconnect them with a good set.

Verify that the head unit is turned on, the volume is turned up, and cycle through multiple inputs, like the radio tunerCD playeror auxiliary input. If you get sound from one input but not another, the problem is in your head unit, and not your amp. If the amp drives that just fine, then you have a problem with your speakers or wiring. First, you need to inspect your patch cables and speaker wires. If the cables that connect your head unit and amplifier run alongside any power or ground cables at any point, they can pick up interference that you will then hear as distortion.

The same is true of the speaker wires. Using higher quality cables or wires with good shielding can also help. For more information on how to diagnose that type of problem, check out how to deal with ground loopsand more details about what causes car speaker whine.The best of us have experienced it at least once or twice in the past. Speakers have been perfectly placed ; all the cables have been meticulously connected ; each piece of equipment has been switched on. You hit play on the audio source.

And then nothing happens. Whether related to recently installed components or if it's simply your regular system that had been working fine just yesterday, it can feel terribly frustrating when this happens.

But don't throw that remote out of anger just yet. Take the opportunity to practice some troubleshooting skills. The process can seem a little intimidating, but not if you proceed carefully and methodically to rule out each possibility. Quite often it can be the simplest, silliest reason you might get a chuckle out of it later on as to why the system stopped working or wasn't working from the get-go. The following steps help guide you through the common problems.

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Remember to always turn off the power to the system and components before connecting or disconnecting cables and wires. Then turn the power back on after each step to check for correct operation.

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Leave the volume down low, lest you blast your ears once the audio is playing fine again. Check the power. This could seem like a no-brainer, but you would be surprised at how often this is the reason why electronics won't work. Make sure that all plugs are firmly seated in their respective sockets; sometimes a plug can slip out halfway and not draw power. Double-check that wall switches operating any outlets are flipped on it's usually a good idea to connect equipment to outlets not toggled by a switch whenever possible.

Confirm that all units including any power strips or surge protectors in the system are able to turn on. If that also doesn't work, the equipment in question may require repair or replacement.

Make sure that the right one s are enabled and check that the correct source has been selected, too. It's easily overlooked, but all it takes is an accidental bump or press of a finger on a remote to mix things up. Check the speaker wires.

Inspect the bare ends to ensure that enough insulation has been stripped off.

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Confirm that the speaker wire connectors have been properly installed and are inserted far enough to make good, steady contact with the speaker terminals. Check the speakers.

If possible, connect the speakers to another known working audio source in order to ensure that they still operate properly. This is made simpler if the speaker s in question offer 3. If the speakers still won't play, they may be damaged or defective. If they do play, reconnect them to the system and continue.

Amplifier Cutting Out? Protect Mode? No Sound? Test these!

Check the source component s. Test whatever source component s you are using e. If a source component still doesn't play properly, then your problem is most likely there. If the receiver works with some input sources but not othersthe problem could be with the cable s connecting the component s and the receiver. Replace any suspect cables and try the original component s again.

Tweet Share Email.Like Tweet. Joe Spose. It just cut out, and never cut back in. It still turns on, but it is not powering the subwoofers.

Amp has power, but no sound!

I had him hook his subwoofer up to my stereo, so the subwoofer is not blown. I also had him hook up his RCA's to my stereo, those are fine too. Then I had him hook up his amp, in my car, to my subwoofers- no sound. Everything in my car is fine- remote, ground, power. My stereo works fine, so I know it's his amp, but this is where I'm lost. Why would it turn on, but not push the subs? This just really ticks me off if this amp is crap already.

Oh, and in case anyone is wondering- it's a volfenhag zx I'm a Kenwood girl myself, so I'm kinda blaming the brand.

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If the amp is shot, does anyone know if this is something volfenhag is notorious for? CL Smooth!!!!!!!!! Post Number: Registered: Jul You can open it up and you'll probably see where it shorted out. Either way I'd replace it with a new amp of better quality because it's most definately not worth the hassle of attempting to have that amplifier repaired or repairing it yourself.

What kind of budget do you have for an amplifier if you replace the damaged one? All you have to do is wait around a bit and there will be one for sale. Check on caraudio. My buddy had the same issue and he had put the RCA's in the wrong input Usually us "men" just have a witching when a girl comes around and then we roast marshmallows so you are a lucky one.Log in or Sign up. The Gear Page. Turn amp on and get loud hum Nov 12, 1. Messages: 1, Any ideas? Nothing through the speakers.

Tried replacing tubes Nov 12, 2. Check your speaker If so, you have DC voltage-- which means you shouldn't leave it on for long-- you can ruin your speaker Sounds like a short somewhere Nov 12, 3.

Messages: 4, I ain't never seen a tube amplifier with enough DC on the speaker output leads to blow anything. It sounds like the rectifier is whipped. If its a tube unlikely just replace it. If its 2 or 4 diodes, replace these. Its easy to blow diodes if there is a surge on your AC line.

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An MOV installed across the power transformer primary solves this problem. Nov 12, 4. Messages: 6, If the amp is humming, then there is sound coming out. Maybe no signal, but that is sound.The complaint was no sound but have power. Usually the first thing I do was to connect a speaker at the output jack to see if the sound really not present.

Another test is to check the output DC voltage at the speaker output jack. It should not have DC voltage and from the test I got True enough, when I placed my digital multimeter to the transistor pin on board I got very low ohm on all the legs pins. After the replacement with new components the stereo power amplifier with no sound problem was finally fixed. I did not post the video thus you would not hear the sound but the sound worked! Please give a support by clicking on the social buttons below.

Your feedback on the post is welcome.

amp has power but no sound from speakers

Please leave it in the comments. If you have electronic repair articles to share with us, please contact us HERE. You can also forward this website link to your friends and colleagues-thanks! Wow, a lot components are changed there, Suranga. Is it easy to purchase components in Sri Lanka? My God! What a tedious work, but, with a positive result! Well done! Did you get exact replacements or you had to find matched? Regarding those shorted transistors, did you measured them in PCB first or did you desolder them first and only then you measured?.

I still learn to repair electronic devices but sometimes it happens that if I measure a diode in PCB being soldered it seems to be shorted but after desoldering and testing again it is OK. So I asked here because you are better at repairing.

Thank you for reply.Worst-case scenario? You might get to go shopping for an upgrade. Before you get started, make sure all equipment is turned off, including the subwoofer.

amp has power but no sound from speakers

You never want to connect or disconnect any cables while anything is on, lest something incurs accidental damage. Check connections and speaker wires. Starting from the subwoofercheck all the wires and connection points running to amplifiers, receivers, or speakers. Check to make sure that cables are firmly connected and plugged into the correct spots. The inputs on the back of the subwoofer generally plug into the subwoofer output on the back of receivers or amplifiers.

If the subwoofer connects to speaker outputs on the receiver or amplifierinspect the entire length of wire connections for defects. If any bit of wire appears to be worn, torn, or damaged, replace those wires before attempting to use the equipment again. Perform a quick test on the wires to check that they work. Check outlets, power cable, and fuse. Most subwoofers have a "standby" LED that glows to indicate active power.

If it's not lit, check that the subwoofer is securely plugged into a wall socket, surge protector, or power strip. If a plug's prongs slip out halfway—it's often enough to prevent the flow of power— gently bend them so the cable will stay connected after you let go.

Make sure that all associated switches i. If the subwoofer still doesn't power on, try plugging it into a different outlet that you know works properly. As with the speaker wires, inspect the subwoofer's power cable for any damage or defects. Some subwoofers are equipped with a fuse, which may or may not require removal of a back plate.

If the fuse is a feature, and if you're comfortable tinkering with electronics, check to see if it needs replacing. Otherwise, consult the manufacturer or local repair shop first. Check system and menu settings. If all the wires and cables look good, revisit the menu settings on your receiver or amplifier—you never know if someone might have accidentally changed it all.

Check that the subwoofer is associated with the proper audio input selections. Make sure that the subwoofer's output hasn't also been adjusted down. Some receivers will, in fact, allow subwoofers to operate with a large speaker setting, so consult your product manual for additional details. Verify connections, turn on the subwoofer, and set the volume.

amp has power but no sound from speakers

After all connections and settings have been verified, turn on the subwoofer. Check the volume level on the subwoofer and receiver or amplifier before sending any audio input. Start the volume low and gradually increase it to determine if the subwoofer is working correctly. If the subwoofer doesn't power on at all, or it powers on but won't play a thing, then there's a good chance that it is defective and needs to be replaced. If possible, connect a separate subwoofer to the sending device to test that the hardware malfunction isn't related to the sender.

If the second subwoofer works, then it's very likely the original is indeed bad.


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