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LiVan

Доработка PSU (уменьшение тока LED подсветки) разных моделей TV

LiVan

Доработка PSU (уменьшение тока подсветки) разных моделей TV.

Пишем подробно,  обязательно с лично снятое фото, как  вы делаете доработку по уменьшению тока подсветки.

В своем сообщении указываем:

1.Модель телевизора

2. Модель PSU

3. Драйвер светодиодной подсветки

4. Участок схемы или фото платы где произведена или требуется доработка.

5. Показание амперметра до и после доработки по ограничению тока подсветки.

Перед публикацией обязательно проверьте нет ли уже точно таких же данных по доработке  PSU (уменьшение тока подсветки)

Если данные в теме уже есть не нужно их дублировать, пишем только если у вас другой способ уменьшить ток подсветки.

Message added by LiVan

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Thomson T43D19SFS-01W

PSU: SHG4301A-101H

LED driver: MP3398A (корпус soic20)

панель: LVF430LGDO E2 V17

Стоит 3 алюминиевых планки по 8 шт. 3v диодов последовательно.

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ROLSEN RL-22E1303F

Panel: T215D02-L01

PSU: ER935

Led-driver: 

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Изначальный ток на подсветку 370mA

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DNS K32A619
Майн KL32GT618-LGD196YTK
Драйвер ocp8121
на обратной стороне платы удалить 

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диоды 6V, анод маленькая площадка
до удаления резистора ток 157,6 mA, после  доработки 101,3 mA

 замеры на фото

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LG   L42LS570T
main LD22*/LC22
Panel LC420EUE SE M1
LED backlight 6920L-0001 60 led 7030*6V ( 6 групп по 10 led), замена всех led.
PSU LGP4247L-12P
PWM LED driver AAT2430AISX 
ток включения 620 mA, ток без сигнала 400 мА (ток измерялся общий для 6 групп)
доработка   

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ток включения 540 mA, ток без сигнала 220 мА
(после сборки тв обнаружил в меню "подсветка 70"), менять больше ничего не стал...

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LG 43LJ500V
Майн 715G8524-M01-B00-004T
БЛОК ПИТАНИЯ 715G7574-P01-W07-0H2H
матрица TPT430H3
T-CON 6870C-0532A
Драйвер PF7909
на обратной стороне платы удалить один(или два) из резисторов из ряда как на фото
до доработки ток 1050mA, после удаления резистора 820Ma

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BBK 50LEX-5039/FT2C

MainBoard: CV338H-T50

Panel: CX500DLEDM

Подсветка четыре планки по 9 СД, две планки соединены последовательно и в параллель двум другим. СД- 3030 6в 300ма 

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.

Изначально ток подсветки 590 ма,

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и ток становится 440 ма.

 

 

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HAIER LE32F1000T
main  TP.MS3463S.PB801
Panel CN320CN7201
LED driver: SN51DP
ток 330 мА
доработка проведена после ремонта БП (гроза) в профилактических целях.

удалил  

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подробно на фото
ток 245 мА

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Telefunken TE32182B301C10-UD-LED

MAIN  17MB82S

PANEL VES315WNDS-O1

POWER--17IPS11

LED driver  MP3394

Подсветка--две планки по 11 диодов_ 2835 на 3,3 вольта

Рабочий ток--390 мА

 

Для снижения,

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MP3394 , меняем резисторы 

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Рабочий ток станет--270мА

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TELEFUNKEN TF-LED32S95T2
MAIN MS36639-ZC01-01
LED DRIVER OB3350C
PANEL V320BJ8-Q01-C1

ток 560 мА

доработка на фото

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ток 345 мА

 

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