{972C} Repairing STR3A155 based power Supply in LG Inverter AC Board

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{972C} Repairing STR3A155 based power Supply in LG Inverter AC Board

Рет қаралды 8,992

Күн бұрын

in this video number {972C} Repairing STR3A155D based power Supply in LG Inverter AC Board, part-4. i explained and demonstrated how to repair lg dc inverter ac outdoor unit board (it is used with EBR758794 EAX64913701 for ARUN040GSS0, ARUN050GSL0, CRUN040GSS0) having STR3A155D based smps switch mode power supply. in this board the offline switching ic STR3A155D marking 3A155D was damaged. i replaced with equivalent ic ICE3BR1065JF. i explained with datasheet. we an replace str3a155d ic with ICE3BR1065 or TOP249YN. when using top249Y ic, pin number 5 and 1 will be connected together to obtain half frequency option at 66KHz, otherwise TOP249Y will switch at 132 KHz
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#lg #inverter #outdoor #unit #board
00:00 how to repair lg dc inverter ac outdoor unit circuit board
00:20 STR3A155D circuit & datasheet explained
01:45 3A155D SMPS IC pinout
07:18 STR3A155D SMPS circuit
08:46 how to test and repair STR3A155D power supply
17:01 STR3A155D equivalent, replacement, substitute

Пікірлер: 72

@mohamadsaidi7252 3 ай бұрын

YOU ARE THE BEST TEACHER IN THE KZfaq

@julianalvarado3284 4 ай бұрын

I'm glad I wasn't arrogant when I watched the beginning of the video. I wasn't going to watch it because I've been repairing power supplies for a long time, and I really would have missed out on some very valuable content. Thank you for sharing your knowledge in such a pleasant way. We really appreciate your work, genius. Greetings from Argentina. 😃

@HaseebElectronics 4 ай бұрын

good evening special thanks for your valuable words and appreciation please accept my best regards for your encouraging comment

@julianalvarado3284 4 ай бұрын

@@HaseebElectronics Make content of such good quality, in this area that there isn't much of it in these parts of the planet. It really helps me, I hope you have many more successes and I will join the channel soon. Greetings dear!

@Solder_it 10 ай бұрын

This is quite amazing,, i never find videos like this in youtube. Excellent!

@vortexOGgg 10 ай бұрын

I think you invented SMPS in your previous life. Your knowledge and your way of teaching is beyond words.

@MarineElectrical 10 ай бұрын

Good job! Keep doing videos! Many people are thankful.

@chessapk5034 10 ай бұрын

World class talent. You have amazing skills and excellent teacher. Thank you for sharing your knowledge with us.

@HaseebElectronics 10 ай бұрын

You are very welcome and special thanks for your valuable comment please accept my best regards

@W1RMD 10 ай бұрын

Your smps knowledge surpasses all others! I swear you could fix these blind folded. Thanks and have a great day!

@dudleynisbeth924 10 ай бұрын

I am praying that GOD gives you strength to make more videos, great camera angles .FLORIDA

@HaseebElectronics 10 ай бұрын

thanks a lot and best regards for your wishes

@MdIsmail-ci5uy 5 ай бұрын

Allah has known how much knowledge you have sir

@ilanbinkovitch6054 10 ай бұрын

A pleasure to watch your work ! thank you

@HaseebElectronics 10 ай бұрын

it is my pleasure

@BlackOpsJuJu 10 ай бұрын

wow amazing repair great vid as always Thanks for Sharing You are my favorite content creator of all times I am always looking forward to your next vid Your knowledge is unbelievable

@muhammadishtiaq24 10 ай бұрын

Excellent thanks for sharing this informative video keep sharing

@vijayakumarkumar9190 10 ай бұрын

Very good and useful information sir thanks for sharing this knowledge to us

@kaizen1071 10 ай бұрын

Harikasınız efendim. Güzel. İc dönüşümü yaptınız. Sağlık huzur ve bol kazançlı günler dilerim.

@mahdixxx1306 9 ай бұрын

Beautiful,thanks👌👌👌

@ShumailaKiDuniya 10 ай бұрын

Very amazing sharing

@mosfettg6857 10 ай бұрын

great job,your skills are amazing

@HaseebElectronics 10 ай бұрын

Thank you so much 😀

@rmjnm 10 ай бұрын

Great, fantastic nice and knowledgeable.

@HaseebElectronics 10 ай бұрын

Many many thanks

@susantaatha6468 10 ай бұрын

Very nice information. Many many thanks.

@HaseebElectronics 10 ай бұрын

You are most welcome

@devspoulaki 10 ай бұрын

Love this video

@HaseebElectronics 10 ай бұрын

thanks a lot

@NisarAhmad-tf2pg 10 ай бұрын

💯❤🎉🔌 Thank you very much Sir for such detailed knowledge.

@HaseebElectronics 10 ай бұрын

Always welcome

@remediusfernandes1570 10 ай бұрын

Thanku sir🙏

@serfrigen 9 ай бұрын

Saludos Maestro, compartido. 👍

@HaseebElectronics 9 ай бұрын

muchas gracias. por favor acepte mis mejores saludos

@serfrigen 9 ай бұрын

@@HaseebElectronics Gracias por traducirlo, Saludos desde Mataró Barcelona. 👍

@rolanddejesus8685 10 ай бұрын

thank you very much sir for sharing,it helps a lot to me...God bless.

@HaseebElectronics 10 ай бұрын

You are most welcome

@gokhankaya8119 7 ай бұрын

Güzel paylaşım. teşekkürler

@msbbadsha1456 10 ай бұрын

Wow😍

@almohalelaty6355 10 ай бұрын

So informative video

@HaseebElectronics 10 ай бұрын

it is my pleasure

@electroniquepassion 10 ай бұрын

👍Thank you

@giorgostexnikos6976 10 ай бұрын

amazing.

@HaseebElectronics 10 ай бұрын

Thanks a lot

@oguztaban5594 10 ай бұрын

Allah razı olsun.

@nayanjagirdar8408 10 ай бұрын

Nice sir

@HaseebElectronics 10 ай бұрын

Thanks and welcome

@tvbox8478 10 ай бұрын

👍

@PCB_UNCLE_REPAIR_CENTER 10 ай бұрын

Assalamualaikum Bhaiya.... Plz you can explain how does an ac non polar capacitor work in motor Or ceiling fan.... And why it changes its rotation direction When we interchange starting and running terminals..... I know how it works it's only superficial I wanna learn his deep working Plz plz explain in hindi with deep details.. If you read this comment... . . .. . .Have a nice day 💖💖💖

@syvio9214 Ай бұрын

I have an air conditioning inverter board whose source is not switching! all the components are apparently good and the 310V reaches the lnk306pn, could the defect be the 3a155d?

@HaseebElectronics Ай бұрын

good morning in your comment, you mentioned 2 different ICs. LNK306 and 3A155D if voltage are maintained on dc rail. you can check vcc voltage on vcc capacitor. if voltage are missing on vcc capacitor. that time the IC is not switchcing for more detailed verification please check video number 975

@mohamadsaidi7252 3 ай бұрын

IF YOU USED TOP249 IC WHAT RESISTER WOULD YOU USE INSTEAD OF JUMPER??

@nazeemdaniels7769 3 ай бұрын

Hi please explain to me how to check low voltage on a 3 phase LG inverter airconditioner that show CH 23

@restingroysurong805 4 ай бұрын

Sir i confuse from where you get that 1.414 to multiply with 231 volt input please help sir

@HaseebElectronics 4 ай бұрын

it is rms volatge to peak voltage conersion please check video number 305 for detailed answer

@restingroysurong805 4 ай бұрын

Thank you so much sir. About smd transistor sir if we test and put black lead to base and red lead to measure the emitter and collector the voltage drop should be the same or collector should be lower drop

@dipakbhalodia7155 10 ай бұрын

उर्दू chennal मे inverter ac pcb repair ka all video dijiye jo English chennal me jo dala hai vo krupa karke aapka sukriya karte hai janab

@ramdonga9820 9 ай бұрын

Hello sir.. I need to count motor half rotation count.. May I know what is the technique we can use?

@HaseebElectronics 9 ай бұрын

kindly check video number 868

@HaseebElectronics 9 ай бұрын

kzfaq.info/get/bejne/icyGjJygyda4mKs.html

@HaseebElectronics 9 ай бұрын

just use 2 magnets on the shaft count 2x times in one rotation. if you have any doubt or question, please let me know in new comment

@ramdonga9820 9 ай бұрын

@@HaseebElectronics thank you very much sir for ur input.. I have seen that video.. For half rotation count I need to place another sensor in opposite to each other? Only unipolar digital ic enough? Can you suggest any 3.3v vcc unipolar digital sensor part number because we are using only 3.3v supply in my circuit sir.

@HaseebElectronics 9 ай бұрын

Just use single sensor Place 2 magnets on shat to provide 2 pulses in one rotation Or If you are usinh ir sensor qith IRLED. then place 2 reflectors on shaft

@user-vj5ib7ur2s 10 ай бұрын

what is best solution to clean the pcb

@HaseebElectronics 10 ай бұрын

for cleaning i use Isopropyl alcohol or technical alcohol

@jbpowertronics7719 10 ай бұрын

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