If the problem remains:
- Note which channel/speaker is bad. Turn off amplifier POWER.
- Reverse the positions of the signal input plugs at the back of the amplifier, and turn it back on. ...
- To eliminate the speakers and wires from being the problem, note which channel is defective. ...
- If the problem changes sides, the preamp, cables, or associated equipment is at fault. ...
Full Answer
How do you fix an amplifier that is not working?
The first step in fixing internal parts in your amplifier is to open the unit up. Most amplifiers are encased in a two-piece housing–top-front and bottom-back. Besides fuses accessed from the back of the cabinet, many amplifiers include one or more internal fuses.
What is the fix-it guide on amplifier repair?
This Fix-It Guide on amplifier repair tells how an audio amplifier works, what often goes wrong, how to identify an amplifier problem, and what parts and tools you will need to fix it. It then gives simple step-by-step instructions for how to disassemble an amplifier and tells how to inspect an amplifier, and how to clean an amplifier.
Why is my amp making a distorted sound?
It requires hands-on with the unit. U have done all you could. Time to give it last rites. It might well need to have the controls cleaned. If you can get inside you might find a blown fuse. In some amps there are two fuses per channel and if one of the pair blows it will produce distorted sound.
Why is my left channel not working on my Receiver?
If the speaker wire is in good condition, yet the channel in question still won't work, then the problem likely exists within the receiver or amplifier itself. It may be defective, so check with the product manufacturer for warranty or repair options. Swap the right and left channel speakers.
How do I fix a bad channel on my amp?
Turn the amp off and reverse the speaker wires at the back of the amplifier by moving the right channel wires to the left outputs, and the left to the right. Turn it back on. If the problem stays on the same speaker, the speaker or wire on the bad side is defective. If it reverses, it's the amp.
How do I know if my amp channel is bad?
3:145:05Dead Channel in your System? - YouTubeYouTubeStart of suggested clipEnd of suggested clipTurn the system back on still not playing alright. Now we know that somewhere along this lineMoreTurn the system back on still not playing alright. Now we know that somewhere along this line something's. Not right turn it back off and now we're going to do the inputs. Swap your ride left inputs.
Can you repair amplifiers?
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.
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 I fix no sound on one channel?
Make sure the TV and/or additional equipment is set to the same channel (3 or 4).Try changing the channel. If no other channels have the same issue, then it might be an issue with just the one channel.Reboot your receiver: unplug the receiver and allow at least 60 seconds before plugging it back in.
How do you check amp channels?
1:237:11How to test an amp ( amplifier bench test ) - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd most Android phones they all have this 3.5 millimeter jack which is going to go here. And on theMoreAnd most Android phones they all have this 3.5 millimeter jack which is going to go here. And on the other end is just a pair of RC is so that's going to feed my audio. Into my amp like.
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 service an amplifier?
1:114:08Amplifier Service & Maintenance | LECTRICare® Music ElectronicsYouTubeStart of suggested clipEnd of suggested clipRemove applicator tube and lightly coat all circuitry to protect against harmful environmental.MoreRemove applicator tube and lightly coat all circuitry to protect against harmful environmental. Threats. Wipe off excess remove tubes always wearing gloves to keep finger oil from getting onto. Tubes.
How do you restore an old amp?
2:1917:52How To Restore an Old Power Amplifier from 1977 - YouTubeYouTubeStart of suggested clipEnd of suggested clipI begin by opening up the unit to see what kind of capacitors are in there so i can order the rightMoreI begin by opening up the unit to see what kind of capacitors are in there so i can order the right ones as well as to see if there's any physical damage to the unit.
How do I test my amp for no sound?
1:283:52Diagnosing a Sound System with no sound QUICKLY | AnthonyJ350YouTubeStart of suggested clipEnd of suggested clipIf I blow the speaker. I don't care but what I'm looking for is is the amplifier doing anything soMoreIf I blow the speaker. I don't care but what I'm looking for is is the amplifier doing anything so surefire way to tell if the amplifier is doing anything is just hook up your test speaker.
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).
How do you know if your amp is fried?
These are listed below: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...
How do I know if my guitar amp is blown?
The most common aural indication of a blown speaker is an unpleasant buzzing or scratching sound, by itself or roughly at the pitch of the note the speaker is attempting to reproduce. Or there could be no sound at all.
How do you tell if you need new tubes in your amp?
A: These are the most common signs that tubes need replacement: Excessive noise (hiss, hum) including squealing or microphonic tubes. Loss of high end. ... A muddy bottom end; Sounds like there is too much bass and note clarity is lost. Erratic changes in the overall volume. ... The amp doesn't work!
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 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
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.
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.
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.
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 increase headroom of amp?
An easy way to increase headroom, or instantaneous power output is to merely increase the rail voltages, though one has to make sure the devices can handle the higher voltages and currents. It won't increase the steady state power as that is determined by how much current the power supply can put out. If it starts to run out of current it will drop it's voltage which will generally result in sonic degradation.
Why does my amp fuse blow?
The fuse blew because something it feeds shorted to ground. Most likely you shorted the output transistors. I'm not familiar with your amp but besides replacing the output transistors you will need to make sure they didn't pull enough current to damage something in the bias circuit.
How long does it take for a capacitor to discharge?
I've not seen charges held more than a few days in capacitors in circuits and they usually discharge in a few hours if they don't come with balancing/bleeder resistors installed, in which case minutes. SS amps don't have high voltage inside after the AC cord is removed. In theory, you can get a high current. low voltage shock, which will burn you at the point of contact and definitely get your attention. Tube amps are the ones with high voltages that can kill. I always use an insulated tool to extract fuses anyway. Basically, if you don't have a clue what's in there. your hands shouldn't be either.
How many watts does a 50 volt amp use?
Remember that power is voltage squared divided by resistance, so 50 volt rails, assuming a bipolar supply, would mean 100,00/8 assuming an 8 ohm load. That's over 1000 watts peak to peak.
Can you get a high current with a tube amp?
Tube amps are the ones with high voltages that can kill. I always use an insulated tool to extract fuses anyway. Basically, if you don't have a clue what's in there. your hands shouldn't be either.
Can a fuse be on a line?
Yes, that could be the line fuse, if it's not just on a holder accessible from the rear which is more usual. This page is in German which I don't read well, but if you look at the pictures at the bottom you'll see the type of fuses I mean at the bottom of the picture on the left and the right side of the picture in the middle.
Can you use a capacitively coupled probe on an AC meter?
Even an unshorted meter can seem like a DC short to some circuit nodes. By using a capacitively coupled probe you will only be able to look at AC but will have much less likelyhood of causing damage to low level circuitry by asking a device to put out more current than it can. Remember that a test device, or meter, is also a load not unlike a speaker, only much higher in impedance. That's why you generally want your meter to have as high an input impedance as possible.
What happens if you switch the left channel on a speaker?
After switching them, placing the left speaker on the right channel and vice versa, if the left channel suddenly does not work when connected to the right speaker, then you know the problem lies with the right speaker itself . If, after the swap, the left channel does work with the right channel speaker, then the problem is not the speaker.
What to do if you encounter a splice on a speaker?
If you encounter splices, make sure that the splice is maintaining a safe, proper connection. If something looks questionable or you are unsure, replace the speaker wire and check the whole system again. Verify that all wires are securely connected to the terminals on the backs of the receiver/amplifier and the speaker.
Why won't my speaker wire work?
If the speaker wire is in good condition, yet the channel in question still won't work, then the problem likely exists within the receiver or amplifier itself. It may be defective, so check with the product manufacturer for warranty or repair options.
What to do if your DVD player is bad?
For example, if the problem exists only with DVDs and not any other source, such as a radio or CD player, then it's possible that either the DVD player or the cable connecting it to the receiver or amplifier is bad. Replace that cable with a new cable or swap it with a known-good cable to see if that works .
How to test if a speaker is bad?
Swap the right and left channel speakers. This is a quick and simple way to test whether one speaker is truly bad or not. For example, let's assume that the right channel does not work when connected to the right speaker, but the left channel works fine when connected to the left speaker. After switching them, placing the left speaker on ...
Can an electronic device die?
Electronics can malfunction or die out at any time, often with little or no warning. If replacing the cable in the previous step didn't fix things, then the problem may lie with the source itself.
