DIY Replace the audio potentiometer, the potentiometer for adjusting the volume of the speaker is br

If it is determined that it is a potentiometer.

questions, you can DIY yourself. Steps:

1. Disassemble the speaker and use anhydrous alcohol first.

Drop some alcohol down the potentiometer pins. Then turn the potentiometer shaft repeatedly, drop in some alcohol again, continue to rotate the shaft, and test the machine after the alcohol volatilizes. This method can dissolve and remove the problem of dirt deposition of carbon diaphragm of potentiometer;

2. If the carbon diaphragm is seriously worn, this method is invalid, and the device of the same specification can only be replaced. Replacing the potentiometer is very simple, use a soldering iron or solder extractor to remove the solder on the potentiometer pins, remove the potentiometer, replace it with a new device, and solder it firmly. Then test the effect.

3. Schematic diagram:

Tianlong audio, the landlord is a friend

The volume is turned up and the volume is lower, which is not very similar to the phenomenon of poor potentiometer contact.

No matter how bad the potentiometer is, there will be no very certain adjustment and the actual opposite, at most, the horn "click" sounds, and the volume is up and down. The traditional method of volume adjustment is to use a potentiometer. There is also a digital method, which is pulse encoder + MCU + volume control chip.

So it's hard to say if it's a potentiometer or not

The landlord tried it, can this volume knob be unscrewed without restrictions, or is there a minimum and maximum limit? It must be the encoder that is unscrewed without limits. Some potentiometers are so-called "multiturn potentiometers" that can be twisted several times, but ultimately there is a limit.

If you want to make a simple repair, use anhydrous alcohol (anhydrous alcohol is required!). Just clean it, and this trick will work on potentiometers or rotary encoders. Drip alcohol from the notch of the enclosure of the potentiometer or encoder, or the shaft, and then twist the shaft several times, let it dry for a period of time or blow dry, but the disadvantage is that it is not thorough, and it will be dirty after a while, after all, the dirty thing is not cleaned out of the inside of the component.

In addition to adjusting the volume or frequency, the potentiometer on the speaker also plays a role in the entire circuit.

When replacing, it is best to replace the new product according to the original specifications, such as resistance, single or duplex, appearance and other important factors.

Change one, it's generally 50k, but the one used in Tianlong should be of a higher grade.

Summary. Hello, glad to answer for you. The wiring method of the potentiometer for adjusting the volume of the audio, the standard connection method is:

The rotating handle of the 1 potentiometer is facing itself, from left to right, it is 1, 2, 3 pins, 1 pin is grounded, 2 pin is connected to adjust the output (equivalent to the input of the power amplifier), and 3 pin is connected to the adjustment input (equivalent to the output of the preamp signal).

The potentiometer used to adjust the volume of the speaker is broken, how to wiring it?

Hello, I am inquiring for you here, please wait a while, I will reply to you immediately <> Hello, I am happy to answer for you. The standard connection method of the potentiometer for adjusting the volume of the audio is: 1 The rotary handle of the potentiometer is facing itself, from left to right are 1,2,3 pins, 1 pin is connected to the leakage of the ground, 2 pin is connected to adjust the output (equivalent to the input of the stool search and training amplifier), and 3 pin is connected to adjust the input of the jujube (equivalent to the output of the pre-amp signal).

I hope the above is helpful to you If you are satisfied with me, please give me a thumbs up

If you change your audio potentiometer and notice that your power consumption has increased significantly, it may be caused by the inappropriate selection of the potentiometer or the wrong installation. It is recommended that you check the following:

1.Whether the potentiometer selection is correct: different power speakers need to match potentiometers of different power to work normally, if the potentiometer power is too small, it will lead to insufficient power supply, and it needs to be upgraded to a potentiometer with a larger stool power.

2.Correct wiring of the circuit: Confirm that you have properly connected the speaker and power supply, and that there are no loose, virtual connections, or short circuits between the potentiometer plug and the outlet.

3.Whether the installation environment is suitable: Both the speaker and the potentiometer should be used in a well-ventilated, dry environment that is not affected by moisture and other factors to avoid affecting their normal operation. Stuffy and.

If the above conditions have been ruled out, but the problem persists, it is recommended to contact the maintenance personnel for professional maintenance. Pay attention to the safety operation procedures must be observed during the processing process to prevent safety accidents.

If the potentiometer is broken, it is generally due to poor internal contact, and the specific performance is that the sound is sometimes loud and sometimes small.

From the perspective of structure, the potentiometer is divided into closed and open two, if it is closed and broken, it is difficult to repair, directly buy a new replacement of the same specification, it should be noted that in addition to the shape to be the same, the specifications should also be the same. The potentiometer is linear: a, b, c, so the linearity should be the same, otherwise it will affect the use.

For example, the original potentiometer is A50K, and when you buy a new one, in addition to the same appearance, the specifications should also be A50K.

If it is open, you can use cotton to glue the carbon sheet inside the potentiometer and the metal brush that comes into contact with the carbon sheet. Because the potentiometer is used for a long time and is easy to contact with poor contact and oxidation, the effect can be seen after scrubbing. If it is aged, it is recommended to replace it.

The replacement principle should also be the same as the original specification.

Generally, the common potentiometer is not expensive, the factory price is several yuan, it is easy to buy in the electronic market, and it is easy to replace it with an electric soldering iron and tin wire. If you don't have the tools, buy a potentiometer and ask the appliance repair shop to help you weld it.

If you have alcohol at home, you can use a trace amount of alcohol to drop in, the amount is estimated to be clear in the slide in the potentiometer, do not try not to get other components on the electricity, after dropping in the alcohol, rotate the potentiometer back and forth from the smallest to the largest for about two minutes, but pay attention, be sure not to do this operation in the case of electricity, so as not to burn other things with alcohol transmission, wait until the alcohol is completely dry and try it after the electricity is on, if it gets better, you do the same operation again, this method should be able to help you, this method is simple, It can be started on the spot, which is convenient.

Remind the landlord, the general online oil is not lubricating oil or household oil (the general household oil is insulated, do not use), but rust removal oil, I am an audio electronic product manufacturer, the product also uses a potentiometer, tried WD-40 rust removal oil, can clean dirt, rust prevention, etc., did the aging test did not find that this oil is subject to abnormal phenomena on the product, of course, just do the test and not do the product, this oil ** is more expensive than your potentiometer, the cheapest 10 yuan, there is no need to buy, Remove it yourself and use a rubber to gently check off the dust, pay attention, the black circle is not dust, it is a useful charcoal touch, you can not use it vigorously to check off, the potentiometer on the market is only 5 cents to 1 yuan, it is best to change the potentiometer if it is convenient

Dripping oil is not a no-no. It is recommended to buy a new one, and if you are afraid of trouble, remove the board and take it to the repair shop to help weld it.

If you want to exercise your abilities, buy a soldering iron, rosin, and solder wire.

This six-pin potentiometer is a bit cumbersome to disassemble, and I usually use scissors to cut the welding legs. Then use a soldering iron to take out the solder feet one by one, and then use a toothpick and soldering iron to clean the soldering holes, and put the new ones on and solder them well.

When soldering, be sure to pull out the plug and solder with the residual temperature of the soldering iron. If the soldering iron is not grounded, there is static electricity that may burn out some sensitive electronic components. If the grounding is good, you can solder directly, rosin is used for welding, first put a little solder on the soldering leg of the potentiometer, and solder it is better to weld it when installing the board.

Pay attention to the high temperature when using a soldering iron. Although the barbecue is very fragrant, the barbecue on my body is...

The potentiometer is not expensive, two or three dollars a piece, that's average, you can solder it down if you solder it on the circuit board! It's a bit difficult to get 6 feet, but it's best to have a dual-electric soldering iron. The welding was done in a minute or two.

If you go there to repair it, it will cost a little more, and the handling fee will be much higher.

Use insulating cleaning liquid (precision electromechanical equipment cleaning solvent) to clean it, and the effect will be very good, but this thing is not easy to buy outside.

If there is dust in the volume knob, causing poor contact, you can drop a drop of oil into it, and then rotate it left and right several times, so that the dust can be washed off and the fault can be solved. However, if the carbon layer inside is worn, the dripping oil cannot be repaired, so it can only be replaced. Two-channel potentiometers are not expensive, go to the store that sells electronic components and buy one for less than 5 yuan, and you can solder it yourself with a soldering iron.

I guess you won't be able to figure it out.

The method is: further disassemble the potentiometer to see the small copper sheet scraped on the black resistance plate The reason for the bad is that the copper plate and the resistance plate are not in good contact There is a gap It is best to change the position of the copper sheet with something If it doesn't work, it is okay to use a pencil to scratch on it Because the pencil conducts electricity.

I'm afraid you won't be able to dismantle this step.

In the future, a photopotential analyzer integrated module will be invented, as evidenced by the post.

The light-emitting tube crosses the grille, there is a receiver behind the grille, there is no contact at all, and it is close to infinite life--- although digital volume control is now popular, but the digital buttons are also contacted, and they are not sensitive, and they are not easy to control, such as the frequent use of the remote control will still cause damage.

Go to the hardware store to buy a welding machine, the kind of soldering tin, more than 10 pieces, and then go to the electronic component store to buy a potentiometer, it is best to remove the bad potentiometer to match. Then buy some tin bars and pick them up yourself, it's very simple.

Yes Your potentiometer may be a coaxial potentiometer, controlling two speakers at the same time, and one side may be in poor contact and solder dropping. If you have a soldering iron, add some tin to the heating of the solder joint. If the potentiometer is broken, buy one, but one or two fast.

If you don't have the tools to repair it, you can take it to the store, but you will be slaughtered.

The usefulness of dripping oil is that the coaxial rust aging cannot be rotated, and this problem is also possible.

If you want to repair it yourself, first of all, you have to have your own maintenance tools, such as soldering iron, solder wire, soldering oil, basically these are enough, and then buy a spare part on the market that is the same as the original potentiometer model, remove the replacement one, and solder it according to the wiring method, I hope it will help you

The potentiometer is about one yuan, just replace it.

The potentiometer is broken, it can be repaired! It's just to see if there's a need to fix it!

As for you saying that the potentiometer is soldered to the motherboard, it doesn't matter! You can get it at a general home appliance repair point!

Someone on the Internet said "drop a little oil, and it will be good?" "Huh! What an international joke!

To put it bluntly: sliding rheostat, and oil is an insulator, it is non-conductive, so it will only break more completely!

I advise you to go to a general home appliance repair shop to change a potentiometer, it should be OK! Ten bucks at most!

Buy a potentiometer of the same model, and buy a soldering iron.

Just put it on yourself.

Some oil also has an effect, but it is not a cure for the symptoms!

Replace it with another one, or take it apart and clean it up.

There are two kinds of potentiometers for power amplifiers: 50K and 100K.

The potential is a sliding contact type potentiometer! According to different needs, the resistance change can be divided into three types: linear type, logarithmic type, and exponential type (antilog).

Acoustic volume potentiometers are logarithmic potentiometers! Its resistance is mostly between 47 and 100 kohms! Its structure is mostly carbon film brush type or brush filament type!

The brush filament type is mostly a high-grade potentiometer! The performance of this type of potentiometer is far superior to that of ordinary reed potentiometers. In fact, it is determined according to the output impedance of the front equipment of the power amplifier, such as most of the sound source CD, DAC, ***, card holder, etc., the output impedance is close to 100K, so the pre-amp potentiometer is generally 100K, and most of the pre-amp output impedance is 50K, so the volume potentiometer of the post-amp power amplifier is mostly 50K, of course, there are some special types, 10K--470K.

This is done so that the front and rear impedances can be matched as much as possible to reduce distortion. In general, the coaxial output line, the output device should be connected in parallel or series with a 75 ohm resistor at the output interface, and the DAC should be connected in series or parallel with a 75 ohm resistor at the input interface, and the impedance of the coaxial cable is also 75 ohms. The principle is the same, it is also for impedance matching.