How to Repair a dead Car Amplifier in less than 30 minutes.

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How to Repair a dead Car Amplifier in less than 30 minutes.

Рет қаралды 57,880

Күн бұрын

This video will show you how to diagnose and where to check if you have power problems with your car amplifier.
It will also help you diagnose the problem if your car amp goes into protection mode.
The introductory Part Of the Video shows how i already opened the car amplifier and all screws were already loose.
I went further explain the various sections of the main board of the car amplifier which comprises of mainly the:-
1. The input or power circuit
2. The intermediate circuit or channels
3. the pre-amps circuit
4. The output circuit.
If you want a detailed explanation and more related content such as this then leave a comment bellow and we will get back to you as sooon as possible.
stay safe and dont forget to SUBSCRIBE to our channel and God bless you.
contact me directly on whatsapp: +237651124505.

Пікірлер: 81

@aaronjennings8385 Жыл бұрын

A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a type of field-effect transistor that is widely used in electronic devices and circuits. It is a three-terminal device that can be used as a switch or an amplifier. The MOSFET has three layers: the source, the drain, and the gate. It operates by controlling the flow of current between the source and drain terminals using an electric field generated by the gate terminal. MOSFETs are commonly used in various applications, including power amplifiers, voltage regulators, and digital logic circuits.

@cedricdebossrepairsUpington 10 ай бұрын

That’s very correct. Thanks for the comments.

@johannjohann6523 Ай бұрын

Thanks for the video. Take care.

@cedricdebossrepairsUpington Ай бұрын

Thanks, you too!

@mofreak714 2 ай бұрын

Very thorough explanation! Great job , thanks for your time!

@cedricdebossrepairsUpington 2 ай бұрын

Glad it was helpful!

@yesno8204 11 ай бұрын

Nice to see some SAns techies on the tube... So many mistakes on this video. But that is how you will learn. Keep doing what you brother.

@cedricdebossrepairsUpington 10 ай бұрын

Thanks for the tips!

@marcosdalmeida6629 11 ай бұрын

You really need to improve those soldr joints, i'd reccomend using some flux.

@cedricdebossrepairsUpington 10 ай бұрын

Will do. Thanks for the tip!

@missamnesia Жыл бұрын

Wow that's very helpfull... Thank you Boss🙏

@cedricdebossrepairsUpington 10 ай бұрын

Stay tuned for more exciting videos coming up.

@basserex4991 2 күн бұрын

Hello! can you help me? I have a problem with one of amplifier, sine wave output is in the noise (noise is 0,520v wthout any signal) (replacing change amps can (but too cant) help for a moment with clean sine wave, but after 1-5 minutes sine is back to noised sine wave. What is causing this problem? RCa input is clean. After my test with third amplifier, for a moment i got better sine wave in second amplifier, The problem: Amp blowing speaker much before distortion output, bass is weak / weird, flexing car but i dont hear and fell presure, Wave sine on out amp is rippling like Phase reverse - back normal - reverse - back normal itp. In warm temperature sound (bass) can be much better for a few minutes only. Or sometimes multipe disconect power wires can help back clear sine wave Which issue fits this problem? Input noise, Resistor noise, Thermal drift. And how to solve this problem. Thanks!

@cedricdebossrepairsUpington 2 күн бұрын

Hi there i hope i can really help you out. First send me a picture of the inside of the amplifier so i can pinpoint what to check as u begin your diagnosis. send the video to my whatsapp +27747788345 thanks and waiting..

@bigmedge Жыл бұрын

Thank you for a thorough and clearly explained tutorial sir!! Just a couple quick questions, if that’s alright: 1. @ 4:02 , the MOSFET on the board measured 0.148 voltage drop; but doesn’t a good MOSFET require ~ 0.3 - 0.7 voltage drop? 2. In your PCB troubleshooting process, do you test each component 1 by 1 until you land on the faulty one?

@cedricdebossrepairsUpington Жыл бұрын

Answer to question 1 is the voltage drop when it’s connected to the circuit can be confusing at times that is why to get the correct voltage drop you need to disconnect the power mosfet from the circuit first. Question 2 answer is I always troubleshoot using the reverse engineering method.

@bigmedge Жыл бұрын

@@cedricdebossrepairsUpington Thanks for your prompt response sir. Can you please clarify how your reverse engineering method works?

@cedricdebossrepairsUpington Жыл бұрын

Reverse engineering works like this if you have a missing 12volts on the output you start from the output section and trace back all the connections which are connected to the 12volts power rail inorder to restore the missing 12v

@bigmedge Жыл бұрын

@@cedricdebossrepairsUpington does that mean you check for continuity between each 2 consecutive components on each trace? Or just check each individual component to ensure it’s within spec? (this is my last question, I promise 🙂)

@cedricdebossrepairsUpington Жыл бұрын

Continuity will help you identify the components on the rail and you can individually isolate the potential faulty components by removing them and checking them out of the circuit. If there is a short and you remove a component and the short is gone then automatically that component removed is faulty. You can contact me on my Facebook page for more detailed info if needed. My Facebook page is Cedric DeBoss repairs

@user-sj4je2nu2y Жыл бұрын

the best in the game

@lonetraveler5660 Ай бұрын

If car head unit is stuck on boot loop, where should I start? There is power, no obvious burning on the board, no obvious damage on parts? I have Toyota entune radio unit. Thank you for you video

@lnkmusicproduction1777 Жыл бұрын

🔥🔥🔥🔥🔥🔥🔥thats one thing about you ,u know what you are doing

@diywork6384 Жыл бұрын

Nice video should make some more about the car amplifier repair like how to fix amplifier in protection mode the amp doesn’t have the external fuse on the the amp how to rest those kind amplifier bro

@cedricdebossrepairsUpington 10 ай бұрын

Noted! Have you checked out our latest video on protection mode? Go check it out if you haven’t yet checked.

@jamesdooley1438 11 ай бұрын

You should do more car audio videos

@cedricdebossrepairsUpington 10 ай бұрын

Check my latest video it’s on a car amp

@a.kthe_tal 6 ай бұрын

When a resistor is burnt. Will it affect the sound output?

@cedricdebossrepairsUpington 3 ай бұрын

yes depending on where the resistor is located in the circuit.

@bradleysandberg7756 10 ай бұрын

Nice job

@cedricdebossrepairsUpington 10 ай бұрын

Thanks!

@slushyscooter7691 3 ай бұрын

You are great bro

@cedricdebossrepairsUpington 3 ай бұрын

Don't forget to like and subscribe

@matthewrosario9638 9 ай бұрын

Where are you located and do you do repairs and upgrades to amps

@cedricdebossrepairsUpington 9 ай бұрын

We are located in Upington,Northern Cape south Africa. you can always send us an email for more information.

@garybenally6241 4 ай бұрын

Is a mossfet a common issue for power failure? What is the first thing you would look into for power issues?

@cedricdebossrepairsUpington 4 ай бұрын

Yes there are high power and lower powered Mosfets

@cedricdebossrepairsUpington 4 ай бұрын

Question 2 : MOSFETS

@speakersubject554 Ай бұрын

So the generic mosfet is 55v? I have the IRFZ44v is that generic? Do I need to replace with the same or can a generic mosfet work? Thank you

@lightsofislamthemessageofg1759 Жыл бұрын

My jvc ks-ax3104 was dead and i successfully repaired.but some minor issue is one side channel mosfet is very hot

@lightsofislamthemessageofg1759 Жыл бұрын

Please guide me

@cedricdebossrepairsUpington Жыл бұрын

You must check the model number on the MOSFET and replace that mosfet. If a mosfet starts getting physically hot then it means it getting more current than it can handle or was meant to handle. The quickest fix is identify the heated mosfet and change it.

@lightsofislamthemessageofg1759 Жыл бұрын

@@cedricdebossrepairsUpington thanks for guide

@Mr_BUSINESS_24_7 Ай бұрын

@@cedricdebossrepairsUpingtonwhy is is getting more current than it can handle ? And if you change the mosfet, won't the new mosfet be fed more current than it can handle ? What component is sending more current than this mosfet can handle ?

@speakersubject554 Ай бұрын

My amp layout is different it has only 4 mosfets on the left and 2 on the right side. Are all 6 dead? Or just the left sides Mosfets dead?

@petertowers9579 4 ай бұрын

How do you know what side is the input and the output side??

@cedricdebossrepairsUpington 4 ай бұрын

the smaller Mosfets which are the power Mosfets shows you that it is the input side and the bigger transistors are always found in the output section.

@xxg0t3mxx 7 ай бұрын

question, could you pull mossfest out of an old amp that is good aslong as it's same ones and reuse them? have 2 old amps that have good mossfets and i have a burnt one in a new amp i just got

@cedricdebossrepairsUpington 7 ай бұрын

Ja you can.

@josephlalock8378 4 ай бұрын

@@cedricdebossrepairsUpington you can not just take any old mosfet from one amp and put it in another and expect it to work. they need to match specs

@Omgge Ай бұрын

What if only subwoofer don t work? It s car s subwoofer , from the factory. Suddenly stopped working. How would u fix that

@speakersubject554 Ай бұрын

Does the mosfe look shorted or is just shorted

@cedricdebossrepairsUpington Ай бұрын

shorted mosfet will cause the fuses to blow everytime to you connect your amplifier to current.

@speakersubject554 Ай бұрын

@@cedricdebossrepairsUpington I am looking for a new mosfet; it shows that 4 of 6 are bad. But I think that they may just be linked and who knows which are actually bad and which are not. I have a question what happens if you don’t have the info about the mosfet’s vgs does it need to be a certain vgs? Volts options for what I searched are 55v and 60v. The mosfets say: IRF44v(not n). So does it matter what voltage you have?

@cedricdebossrepairsUpington Ай бұрын

@@speakersubject554 search the part number on google and buy the exact replacement parts

@Mr_BUSINESS_24_7 Ай бұрын

@@cedricdebossrepairsUpington my mosfets burned up, but my fuse isn't blown. ?? Maybe the previous owner replaced the blown fuse ? I checked my gates and they are ok.

@lazzixx 2 ай бұрын

can i put whole motherboard to oven for a little time maybe fix?

@cedricdebossrepairsUpington 2 ай бұрын

Depends on what the problem is with the board

@lazzixx 2 ай бұрын

@@cedricdebossrepairsUpington will it be fire or explosion hazard if i try that at home?:D there seems to be some kinda issue with some soldering maybe it works on like 1to 15volume but when i put 16 above volume amp goes to protection.. somedays it plays very good loud and clear no problem and then again it has days not working at all. not about cars power or ground or rca ive checked everything 5times..

@Mr_BUSINESS_24_7 Ай бұрын

t@@lazzixx that's a different issue. different topic.

@lazzixx Ай бұрын

@@Mr_BUSINESS_24_7 ok thanks for your pointless answer

@Mr_BUSINESS_24_7 Ай бұрын

@@lazzixx the answer is, yes you can at your own risk And no it will not fix this issue.

@Jetta-Liner Жыл бұрын

Nice to see,,,😂

@shahnajakter7550 Жыл бұрын

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@aqeel_momin 10 ай бұрын

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@cedricdebossrepairsUpington 10 ай бұрын

Keep watching…

@lightsofislamthemessageofg1759 Жыл бұрын

And short after 30 second.

@cedricdebossrepairsUpington 10 ай бұрын

Exactly!

@bradpitt3965 4 ай бұрын

Great material, I have one question about the Phoenix Gold car amplifier, I disassembled it and noticed that the transformer, one of the turns is very loose, should I attach it somehow or glue it with some special glue? Thank you

@cedricdebossrepairsUpington 4 ай бұрын

use soldering wire and soldering iron to fix broken soldering joints.