#Lgtv

LG TV 21"NORMAL PCB
MAIN IC TDA9370PS/N3/A/1747
EHT 6174V-6006Y
VERTICAL IC LA7840
SOUND IC TDA7297
VIDEO IC TDA6107JF
STR F6654
NO EHT PROBLEM
1.Power on/Check EHT supply voltage---ok.
2.Check H OUT voltage---ok.
3.Check H DRIVER voltage-----ok (but not load).
4.Check 5V regulator input voltage------ok.
5.Check 5V regulator output voltage---ok.
6.Check 3.3V regulator voltage------ok.
7.Check memory IC supply voltage---ok.
8.Check SCL, SDA voltage ---ok.
9.Check standby release voltage---ok. (main ic pin 1)Check
10.Check 8V regulator voltage------ok.
11.Again check H DRIVER voltage-----ok.
12.Power off/Open H DRIVER transistor.
13.Set new transistor C2331.
14.power on/Check H DRIVER voltage-----ok (same).No EHT, no vertical voltage.
15.Power off/check driver transformer primary coil continuity------ok.
16.Check driver transformer secondary coil continuity----ok.
17.But secondary coil showing, one pin to other pin PCB, meter reading high ohms.
18.That means Secondary coil left pin solder dry and it not visible.
19.Resolder H DRIVER four pins.
20.Again check continuity----ok.
21.Power on/then-------

[@uttammondal9924]

খুব ভালো লাগছে দাদা ভাই আপনি খুব কঠিন কিছু কাজ করতে পারেন

[@ansarpurkait6270]

অসাধারণ স্যার এত সুন্দর কেউ কোনো দিন বোঝায়নি

[@CosmicElectronics]

সবই তোমাদের ভালোবাসা।ধন্যবাদ।

[@user-wq8hx2sz4v]

আমি বাংলাদেশ থেকে দেখছি উত্তর দিনাজপুর আপনার ভিডিও অনেক ভালো লাগছে অনেক ভালো বুঝান আপনি আমার একটা প্রশ্ন ছিল দাদা দাদা এই সেট পাওয়ার বি প্লাস ভোল্টেজ কত থাকেঅন চালু করলে কত থাকে 😮

[@PREMELECTRONICS]

Nyc. Sir
#premelectronics

[@jig600]

Thanks sar your video is very helpful

[@CosmicElectronics]

Welcome

[@aminulisiam1076]

Love you my dada very nice video

[@raytechnology2049]

Great and details vedio...thanks

[@CosmicElectronics]

Many thanks Debasis.

[@sivatvmechanic455]

Your videos are very useful. Please teach us from voltage testing. Thanks for sharing this👍👌👍👌👍

[@CosmicElectronics]

Ok.

[@somnathsamanta7062]

Sir I had faced with this problem and solve it as YOUR guidance
Thank you Sir
Pronam neben

[@mdaminulislam9945]

Very nice video dada kemon achan apne

[@huanfriend8857]

What a very good video again sir thanks a lot for teaching us god bless

[@CosmicElectronics]

Many thanks to you

[@aminulisiam1076]

Great video dada

[@sudhirdhurua2497]

Informative video

[@CosmicElectronics]

Thank you

[@somnathsamanta7062]

Great & unbelievable Sir
Thanks a lot.........

[@CosmicElectronics]

Ok.Somnath.

[@biduchandanorchestra8068]

খুব সুন্দর ভিডিও

[@CosmicElectronics]

ধন্যবাদ

[@dhirenghaskata7777]

Thanks your video use full
And but other no sound sir this video ok

[@santoshbiswas2283]

Sir, আমি আজ এই বোর্ড ঠিক করেছি। কিন্তু sir ok কন্ডিশনে ড্রাইভার ভোল্টেজ 8.5 দেখাচ্ছে। 14 ভোল্ট ঠিক আছে । 150 ohom ঠিক আছে। Driver supply capacitor, 14 volt filter capacitor দুটো পাল্টেছি। sir এতে কি কোনো অসুবিধা হবে। ( দেরি করে অন হতো এই অসুবিধা ছিল, 8volt regulator এর input supply filter capacitor খারাপ ছিল ) sir একটু জানাবেন। আপনার ভিডিও গুলো দেখে অনেক উপকার পেয়েছি। অনেক কাজ সহজে হয়ে যাচ্ছে।

[@b.tschoolbyp.d1646]

apnar sob video khub valo

[@CosmicElectronics]

Thanks for watching my videos.

[@uttammishraoo6231]

Hello dada i am from orissa.... thank u

[@CosmicElectronics]

Many thanks to you for watching my video.

[@debumandal7112]

God video sir

[@chandsen4027]

Great

[@CosmicElectronics]

Thanks

[@kamaleshmazumder118]

very good

[@CosmicElectronics]

Thanks

[@abdulsalam-lw2pp]

Super sir

[@CosmicElectronics]

Thanks Abdul

[@virendrakher8369]

Sar ji ham pora vedio samf nahi pa y he..... Bicocha no hindi lengveg

[@rajibshetty2509]

Lg tv stand relish sabkechu OK remote stand korlay 110 out

[@jagannayak7989]

Sir lg ultra slim crt tv eht ban ke turant band hojata hai Pilament jalke band hojata hai main ic (chip ic) bala vertical ic new laga diya 115 Volt eht supply new register lagaya Or 9 volt 8volt 5 volt 3.3 volt regular ok H.D driver 43 volt ok transistor no 3228 new lagane ka bad eht ban ke turant band hojata hai batao plz tell me reply

[@anilkumarvadla1026]

👌

[@santoshbiswas2283]

Thanks sir.

[@moharsinghparihar5366]

Driver volt drop pr bhi video bnao sir

[@SUBRATAROY-bv1ed]

দারুণ

[@ravichandran-pc9jf]

LG slim tv pingeksian folt how to rectify the folt.

[@ravichandran-pc9jf]

LG slime tv vertical ic tda 78141 set work normal one hours ago ic over heated folded top side picture what problam

[@CosmicElectronics]

1.Replace 100mf/35V
2.Replace LA78141 original (Rs.400-500).India.
3.Yolk maybe defective.

[@nazmulhaquebarbhuiya423]

আপনি সমস্ত voltage check করার পর আমারও মনে হচ্ছিল EHT section এ dry solder থাকতে পারে ।

[@CosmicElectronics]

Ok. Many thanks.

[@nazmulhaquebarbhuiya423]

@@CosmicElectronicsআপনাকে অসংখ্য ধন্যবাদ কারণ আপনার সৌজন্যেই তো আমি অভিঙ্গতা অর্জন করছি ।

[@surendrajadhav9330]

Good

[@azadsarker5999]

Sir chaina TV problem holo remote diye chanel paltale skine alo thakena abong chobi onek derite ase orthat TV ar porthata onek derite ase abar TV on hote onek deri hoy .mane Ami jokhon chobi dekha abosthay remote diye Chanel paltabo tokhon skiner alota nive jay abong onek derite chobita ase .abosthay ki korbo?

[@bapidiswas3335]

Sir Sony TV video chai

[@suhasisdas3594]

Penasonic 14 "tv contrast problem
Solve korte parchi na pls help.

[@Mamta4455]

Sir mera lg ka kith stand by relise hota h but eht on nahi ho raha h sab voltage ok h

[@CosmicElectronics]

Follow my channel lg playlist

[@sudhirdas8657]

LG CRT kudi ngtv driver voltage machine

[@CosmicElectronics]

Problem main ic oscillator section

[@zahirulislam6222]

Sir apni ki training koren?

[@CosmicElectronics]

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