Laptop motherboard repair 3V/5V power system circuit

Laptop motherboard repair 3V/5V power system circuit | 3v 5v laptop ic

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Жыл бұрын

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Пікірлер: 78

@David55436 Жыл бұрын

I replaced a charging socket for a dell computer as you know on a dell computer there are three ports for the electrical socket one negative one plus 19v and another one for the 3v charger ID and by mistake I connected the 19v to the command of the 3v battery I got confused between the ports and since then the computer stopped charging the battery and even when pressed with the charger it only turns on with A battery that I charged on another computer. I would love to receive an explanation of what exactly happened on the board and how to fix it. Thank you very much. I really appreciate your lessons. Thank you for everything.

@electronicsrepairbasics_erb Жыл бұрын

Hi There, What happen exactly is you inject by mistake 19 volts instead of 3 volts, and because in any circuit we have protection components against the high voltage, one component was blown out (it could be a fuse or a diode or something else ). So inspect visually and using the multimeter all components next of the battery connector in both sides. Good luck

@Martin-ot7xj Жыл бұрын

First of all , i would like to say thankyou for your informative tutorial video . specially you have explained it with picture and symbol on the schematics and mainboard as well , it was very useful . thnx

@electronicsrepairbasics_erb Жыл бұрын

Glad it helped. Thank you

@ramazanbaysa1519 Жыл бұрын

Thank you

@TallyTechandTroubleshooting Жыл бұрын

You are a very good educator! ERB is a fantastic channel as are your explanations and tutorials. Thank you VERY much for taking the time to share this...

@electronicsrepairbasics_erb Жыл бұрын

You're very welcome!

@nadembourkaib4185 Жыл бұрын

بارك الله فيك وحفظك من كل شر.

@electronicsrepairbasics_erb Жыл бұрын

Thank you

@sumuduasiri Жыл бұрын

Thanks very much sir 🙏🙏🙏

@electronicsrepairbasics_erb Жыл бұрын

You are so welcome

@pascalphase2556 Жыл бұрын

Impressive vidéo ! always clear and useful. I follow you from France !

@electronicsrepairbasics_erb Жыл бұрын

Happy to hear that. Welcome Pascal. Thank you

@RobertLenior Жыл бұрын

Once again an excellent video. Thank you!

@electronicsrepairbasics_erb Жыл бұрын

My pleasure!

@davidhoueto3411 Жыл бұрын

Thanks you for this Helpful videos as Always.

@electronicsrepairbasics_erb Жыл бұрын

Glad you like them!

@jakedalagon8779 9 ай бұрын

Thank you sir

@electronicsrepairbasics_erb 9 ай бұрын

Welcome

@GetachewAdise Жыл бұрын

tx sir informative video

@electronicsrepairbasics_erb 11 ай бұрын

So nice

@mctechnologytamil Жыл бұрын

Great video

@electronicsrepairbasics_erb Жыл бұрын

Glad you enjoyed

@ittesttest4172 Жыл бұрын

Hello there , your explanation was very clear & useful , specially with picture, kindly upload more like this video more , please make a tutorial video about power management ic how to check and test with multimeter that is it short or not !!

@electronicsrepairbasics_erb Жыл бұрын

I will try my best

@abelblondin247 Жыл бұрын

Hello thanks for always making good and educational tutorial videos, And please can you demonstrate on how to inject voltage on the 19v ,3.3v and 5v sections using the dc bench power supply when they are shorted to ground

@electronicsrepairbasics_erb Жыл бұрын

Noted. Thank you

@a2zsolution240 4 ай бұрын

Good explain sir....

@electronicsrepairbasics_erb 4 ай бұрын

Keep watching

@Steadyeddie100 Жыл бұрын

Great video,learning a lot 👍

@electronicsrepairbasics_erb Жыл бұрын

Glad to help, because you like schematics, I advice you to watch the last video that I uploaded (Short circuit repair), you will love it. Good luck

@Steadyeddie100 Жыл бұрын

@@electronicsrepairbasics_erb I have and great video it was, I was only thinking there will be times when you can't get hold of the schematic, as I have a old motherboard with lots of ceramic capacitors with no value markings on them,👍

@tyronearendse1722 Жыл бұрын

Hi friend thanks for the informative video

@electronicsrepairbasics_erb Жыл бұрын

Thanks for visiting

@Steadyeddie100 Жыл бұрын

love your videos, could you do a video on ceramic capacitors,that are bad on a motherboard you need to replace, that have no markings,and how you would go about replacing them,thanks in advance

@electronicsrepairbasics_erb Жыл бұрын

Great suggestion! noted, I will. Thank you

@ladbla1752 Жыл бұрын

Thank you for your video. Can you please make a video where you explain how charging circuit (if BQ charging IC ( made by Texas Instrument is used) works? And also give some troubleshooting hints? Thanks a lot

@electronicsrepairbasics_erb Жыл бұрын

Great suggestion! Noted

@jamesnagib9141 Жыл бұрын

Great thanks keep it up (:

@electronicsrepairbasics_erb Жыл бұрын

Thanks, will do!

@edungbe2091 Жыл бұрын

Very educating keep you the good work, sir. Please can you make a video on how to check 3.3v and 5v without a schematic diagram? Thank you.

@electronicsrepairbasics_erb 11 ай бұрын

Ok. Thanks

@emadalzaobi3964 9 ай бұрын

Hello, What is the different between these voltages: 10.SYSTEM POWER(P1V5) 11.SYSTEM POWER(P1V05_M) 12.SYSTEM POWER(P1V05S)

@user-de8oj7vk3f 11 ай бұрын

Very good, can you inquire? Can you explain the motherboard of a surveillance camera?

@electronicsrepairbasics_erb 11 ай бұрын

Noted

@geoepi321975 Жыл бұрын

Thanks sir, what is the function of the inductor in this circuit?

@electronicsrepairbasics_erb Жыл бұрын

Faltering purposes (generate a pure voltage )

@Martin-ot7xj Жыл бұрын

@@electronicsrepairbasics_erb is it take a voltage nose and generate a pure voltage on the mainboard?

@JAS-ih1gm Жыл бұрын

hello sir can you make a video of a laptop mother board all parts what is the right voltage.

@electronicsrepairbasics_erb Жыл бұрын

Ok noted

@jozsiolah1435 Жыл бұрын

F2 + Pwr button in most laptops does the whole trick.

@electronicsrepairbasics_erb Жыл бұрын

Explain why

@alexalexi-ie9vx Жыл бұрын

Greeting , at 03:49 What does this chip ( power management ic) do on the motherboard? Is the 3V and 5V voltage supply on the motherboard? if yes how to know this chip is short or not ? thnx

@electronicsrepairbasics_erb Жыл бұрын

That IC is TPS51120 (3V/5V controller) .I will teach you how to to test it using the multimeter soon.

@Martin-ot7xj Жыл бұрын

@@electronicsrepairbasics_erb I'm looking forward for your next video about it

@alexalexi-ie9vx Жыл бұрын

@@electronicsrepairbasics_erb thankyou

@alexalexi-ie9vx Жыл бұрын

Greetings, what is the function of the ceramic capacitors & chemical capacitor in this circuit? thankyou

@electronicsrepairbasics_erb Жыл бұрын

Filtering purposes

@alexalexi-ie9vx Жыл бұрын

@@electronicsrepairbasics_erb thankyou

@ittesttest4172 Жыл бұрын

power management ic supplier 3v and 5v on the mainboard ?right ? how to check & test this ic with multimeter please how we can know power management ic is working fine , how to troubleshooting this ic with multimeter ? please make a tutorial video for that . for test & checking which pin of this ic must be check??? thnxxxx

@electronicsrepairbasics_erb Жыл бұрын

Ok of course I Will. For now you can check the ceramic capacitors around the IC, if any of that capacitors is shorted means the IC is bad. 2. You can check the heat of The IC, if it is not normal means the IC is failed.

@Martin-ot7xj Жыл бұрын

@@electronicsrepairbasics_erb thankyou for quick response . your tutorial are awesome . keep it up

@Martin-ot7xj Жыл бұрын

for checking the heat of The IC, in normal situation, it must be cold or hot ? thnx

@badalamour1876 Жыл бұрын

how About your channel Skills glows ??? you must be that guy

@electronicsrepairbasics_erb Жыл бұрын

Thank you

@Steadyeddie100 Жыл бұрын

If you don't have a schematics

@electronicsrepairbasics_erb Жыл бұрын

No problem you can troubleshoot without it, But the schematic make things easier for beginners

@ramazanbaysa1519 Жыл бұрын

You haven't provided Turkish language support yet

@electronicsrepairbasics_erb Жыл бұрын

Hi Ramazan, I tried but I encountred some issues.sorry about that

@ramazanbaysa1519 Жыл бұрын

Thanks

@Aktraveldharmapuri Жыл бұрын

Dis not understand

@electronicsrepairbasics_erb Жыл бұрын

What you didn't understand?

@Aktraveldharmapuri Жыл бұрын

@@electronicsrepairbasics_erbyour audio speech very bad quality Please. Use good quality mic

@cosmicallyderived 10 ай бұрын

He’s very generous with his patient explanation. The audio quality could improve but he will get there.

@Aktraveldharmapuri Жыл бұрын

Audio quality very bad

@electronicsrepairbasics_erb Жыл бұрын

Sorry about that