How To Fix It You should first try moving both the amplifier and the audio source system onto the same wall outlet using a surge protector. Sometimes, having them plugged into the same power source will fix the problem. If it doesn’t, try testing both the audio source and the amplifier to see which is causing the humming.
Full Answer
Can a stereo power amplifier with no sound problem be fixed?
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! This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.
How to fix an amp that won’t turn on?
Now that you know your amp isn’t completely busted, remove the sound wires connecting to speakers and other devices. If the noise stops, then you know you have a wiring problem. Hissing and crackling are often easy to fix by rearranging the wires or getting complimentary speakers.
How do I know if my amp is bad?
Some of the most common problems people have with amps include: The amp won’t power on. Sound is distorted. There’s humming in the speakers. Amp comes on, but no sound comes out. The surround sound feature sounds wonky. Amp goes into protect mode. Not enough bass (or treble). Volume keeps getting too loud. Speakers sputter occasionally.
Why won’t my car amplifier work?
If the problem is in your car amplifier, the solution will depend on what’s causing the issue. It, too, could be a connection problem. However, if the amp isn’t getting enough power, has a defective cable, or there’s a problem with your speakers, fixing it may require a little more time and effort.
What causes amplifier no sound?
The speaker is completely blown. The output transformer is open or otherwise faulty. The speaker jack is not wired correctly. The speaker wiring has deteriorated, or the jacks have rusted to the extent that they can no longer make the proper connection.
How do you diagnose amplifier problems?
Test the sound by unplugging the sound cables or colored RCA wires.Hissing and crackling are often easy to fix by rearranging the wires or getting complimentary speakers.If the noise doesn't stop, then you probably have a faulty amp to replace.
How do you fix a power amplifier?
How to Repair Power AmplifiersTurn the amplifier off at the wall and allow it cool down. ... Turn the amplifier back on. ... Unscrew the back panel and remove the chassis. ... Inspect the wiring and solder joints. ... The circuit board can give visual clues to the location of the problem. ... Make sure the probes are clean before testing.More items...
Why is my amp on but not playing?
To diagnose a blown car amp fuse, replace the fuse with everything turned off. If the fuse blows, there's probably a short between that fuse and the rest of the system. Next, replace the fuse again with the amplifier disconnected. If the fuse still blows, there is a short somewhere in the wiring.
How do you know if your amplifier is blown?
How do you Figure Out that your Car Amplifier is not Working Properly?There is a noticeable distortion in the sound.There is no sound even if you have already turned on your audio system.Your stereo system starts making bizarre sounds such as farting sounds.
How do you test an amplifier to see if it works?
How To Test An AmplifierAttach the wires for power (red) and ground (black). ... Touching the amplifier's electricity wire to the car's battery positive post and the ground to the negative battery post is one of the easiest things. ... Link the amplifier with a mic. ... Check all accessible fuses and use one fuse in the amplifier.More items...
Can an amplifier be repaired?
Modern audio equipment is built using delicate components that cannot be repaired; instead, they are replaced. Your audio professional will know which ones to replace, where to get them, and how to do the job. Use a clean pencil eraser to clean cable pins on a regular basis.
How amplifier works step by step?
An amplifier takes an input signal from a source, such as a laptop, turntable or CD player, and creates a larger copy of the original signal before it's sent to the speakers. It gets the power to do this from your mains electricity, which is sent directly to the power supply within the amplifier.
What are the components of amplifier?
The various prominent circuit elements and their functions are as described below.Biasing Circuit. ... Input Capacitor C. ... Coupling Capacitor C. ... Emitter by-pass capacitor C. ... The Load resistor R. ... Base Current. ... Collector Current. ... Emitter Current.
How do you reset an amp?
1:232:52Amplifier Factory Reset - YouTubeYouTubeStart of suggested clipEnd of suggested clipUsing a tool such as a paperclip carefully insert the tool into the hole until you feel the buttonMoreUsing a tool such as a paperclip carefully insert the tool into the hole until you feel the button press down slightly keeping. This button press turn on power to the amplifier.
What can damage an amplifier?
The two most likely possibilities for damage are: - Connecting the speakers incorrectly, putting a heavy load on the amplifier and overheating it. Usually one channel goes before the other. - Cranking up the volume on the amp and ruining loudspeaker driver(s).
Will amp turn on if fuse is blown?
If the fuse is present and blown, the amp can't turn on because the circuit providing mains voltage is open.
What usually fails in an amplifier?
Many things can go wrong with amplifiers, the most common being operator error. That is, if everything lights up but there is no sound, the speaker wires may not be connected or the speaker button may not be selected. Otherwise, the cord may be damaged or an internal fuse may be blown.
How do you check amps with a multimeter?
Insert a CD of 50Hz or 1kHz at 0dB into the source unit, set the multimeter to AC voltage ranging between 10 – 100VAC, and place your multimeter probes on the amplifier output terminals. A good amplifier is expected to produce a voltage reading that is ideal for the recommended wattage output.
How do I test amps with a multimeter?
3:197:11How to test an amp ( amplifier bench test ) - YouTubeYouTubeStart of suggested clipEnd of suggested clipMy my amplifier is REM for remote yours might say plus turn on or remote. You know depending on yourMoreMy my amplifier is REM for remote yours might say plus turn on or remote. You know depending on your model. Then of course your. Ground. You can see my red light came on which is my Diagnostics.
Will amp turn on if fuse is blown?
If the fuse is present and blown, the amp can't turn on because the circuit providing mains voltage is open.
2. Sound Is Distorted
Whether you’re working with a car amp or a standalone stereo amp, distortion can occur when your amp is faulty or damaged.
4. Amp Comes On, but No Sound Comes Out
If your amp is working, but you aren’t getting any sound, there could be a few different reasons for this. Let’s look at the most common ones.
5. The Surround Sound Feature Sounds Wonky
If your amplifier has surround sound capabilities, but your audio is coming from the wrong direction, you may have poorly placed speakers. Additionally, you may have connected one speaker’s wire to the other incorrect speaker and vice versa.
6. Amp Goes Into Protect Mode
Although not all of them come equipped with it, protect mode is a feature that many newer model car amps have.
7. Not Enough Bass (or Treble)
This problem is usually due to bad equalizer settings. However, it could also result from poor speaker placement or the music being too loud. As with most other issues on the list, there’s always the possibility that you have a loose or faulty wire or connection that’s causing the problem.
8. Volume Keeps Getting Too Loud
This issue is one we’ve probably all experienced at one time or another. We’re cruising in our cars, listening to our favorite song, or sitting in our dens, watching a great action flick, when all of a sudden, the volume goes from perfect to insanely, eardrum-rupturing loud.
9. Speakers Sputter Occasionally
Although sputtering speakers could be caused by loose or faulty wires or an internal issue in the amplifier, it often happens because your volume is too loud. If you start hearing sputtering, recall when it happens.
What Can Go Wrong with an Amplifier?
Many things can go wrong with amplifiers, the most common being operator error. That is, if everything lights up but there is no sound, the speaker wires may not be connected or the speaker button may not be selected. Otherwise, the cord may be damaged or an internal fuse may be blown.
What Do I Need for Amplifier Repair?
If you need to open up the amplifier for cleaning or to replace a fuse or electrical cord , here’s what you’ll need:
How Does an Amplifier Work?
An amplifier is an electronic device that magnifies and controls audio signal sources from a built-in AM-FM receiver as well as an external CD player, tape player, or other audio home-entertainment device. The output signal is fed to audio speakers.
How Can I Identify an Amplifier Problem?
In some cases, the problem will actually be in an audio unit that feeds in to the amplifier such as a CD player, cassette deck, DVD player, or speaker.
How to clean an amplifier?
If you need to open up the amplifier for cleaning or to replace a fuse or electrical cord , here’s what you’ll need: 1 Phillips screwdrivers 2 Soldering iron and solder 3 Electrical contact cleaner spray or can of compressed air
What to do if electrical cord is pulled?
Inspect the internal end of the electrical cord for looseness or damage caused by being pulled (a common problem) and replace as needed.
What to use to test fuses?
Use a multimeter to test all fuses.
How to troubleshoot an amp?
If you’re troubleshooting a car amp, turn off the car’s engine and remove the ignition key. Otherwise, unplug the amp from the wall. Always turn off the electricity before handling fuses or exposed wires. ...
Why won't my amp turn on?
If the amp doesn’t activate at all when you turn it on, the problem could have to do with the power supply. Sometimes you have to contend with a loose cord, which is a very easy fix to make. Wiggle the wires, testing them to see if they are in place and cause the amp to activate at all .
How to tell if an amp is on?
Look for lights indicating that the amp is turned on. Activate the amp like you normally would and note what happens. No matter what type of amp you have, something is supposed to change when you hit the on switch and turn up the volume. A lot of amps have power lights that activate when the amp is live. Also, listen for any noises the amp makes, since that could also help you determine the source of the problem.
Why does my amp break down?
Inspect your amp to pinpoint some of the likely causes of the problem you’re experiencing. Wiring problems, from blown fuses to damaged wires, are the most common issues.
Why does my amp light stay on?
If the light stays on, the amp itself could be the problem. It may have shorted out from a strong electrical current, so take it to an experienced repair technician.
What does it mean to replace a fuse?
Replace the fuse with an identical one if it looks damaged. Broken or scorched fuses often mean a simple fix. You will need to get a fuse that has the same amperage rating as the one you’re replacing. A lot of amps use fuses rated 25 or 30, and this number is usually printed on the fuse itself. You could also double-check your owner’s manual for the correct rating before popping a new fuse into your device. [7]
What wire does a car amp use?
Car amps, for instance, often have a red power wire and a black ground wire. It also has a blue remote turn-on wire that powers the amp when you turn on your vehicle.
How to fix a stereo receiver that is not making sound?
How to Fix a Stereo Receiver That's Not Making Sound. This should take around 30 minutes and can be done by anyone with basic receiver knowledge. 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.
What to do if your speakers don't play?
Check the speakers. If possible, connect the speakers to another working audio source to ensure that they still operate correctly. If the speakers still don't play, they may be damaged or defective. If they do play, reconnect them to the system and continue.
Why is my stereo sound so silent?
Silent stereos are usually caused by low power, a wrong source selection, disconnected or faulty speaker wires, broken speakers, or a malfunctioning source component. However, similar to diagnosing a defective speaker channel, troubleshooting a stereo system that's not producing sound begins by isolating the problem—a problem that usually isn't revealed until the corresponding fix has been tried. That's why it's important to proceed through these troubleshooting steps in the proper order.
What to do if your power strip won't turn on?
If something won't power up, test it with another outlet or socket that you know functions properly. If that also doesn't work, the equipment in question may require repair or replacement.
What happens if my amp doesn't turn on?
If Your Amp Doesn't Power on at All. In order to turn on, your amp needs to have power at both the remote and power wires, in addition to a good ground. So if you notice that your amp isn’t turning on at all, that's a good place to start. If the remote turn-on wire doesn't have power, your amp won't turn on.
How to make sure my amp is turning on?
If your amp is turning on just fine, then you’ll want to make sure that it’s receiving an input from your head unit. 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.
What does it mean when an amplifier is clipped?
This is a sign that the amp is being overtaxed by a subwoofer or other speakers to the point where it simply can’t provide enough power.
Why does my audio clip?
An underpowered amp or inefficient speakers are typically the cause of clipping in a home audio setup. Loose or burnt wires can introduce similar problems in cars.
Why won't my amp turn on?
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.
What does it mean when an amp has a protection light?
If your amp has a “protect” light, and it’s on, then chances are good that you have a faulty speaker, subwoofer, cable or another component. First, you’ll want to check for power, as outlined in the “if your amp doesn’t power on at all section,” just to cover your bases.
Why does my car sound like farting?
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.
