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Доработка PSU (уменьшение тока LED подсветки) разных моделей TV


Message added by 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.

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BBK 32lem-1031/ts2c

Шасси CV512H-B42
panel V320BJ6-Q01

Led Driver BIT3267
3 планки по 6 светодиодов 1вт 3 V 1.JT. 2835BPWP2-C

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До доработки ток  350 мА ,после доработки 260 мА.
Фото прилагаются.

 

 

 

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JVC LT-40M640(V1N05) Panel:  LSC400HM06-8 PSU:  TV3902-ZC02-01 Driver:  OB3368AP Для ограничения тока с 300mA до 190mA удалить R указанный на фото. Hidden Content Reply to this topic to see the hidden content.   DEXP F40B7100T (Made in China). PSU LYP03008A0 (K-PL-OA1)  LED Driver AP3041M-G1, MOSFET: AOD478 Удалить резисторы 94542f4cfbc445ec1

SAMSUNG UE32EH5007K PSU: bn44-00493b Panel: LTJ320HN07-L LED driver: SLC1012C аналог FAN7340 После доработки см фото, ток снизится с 256ma до 188mA. Hidden Content Reply to this topic to see the hidden content. Hidden Content Reply to this topic to see the hidden content. 94542f4cfbc445ec1be75611e095d

GOLDSTAR LT-32T450R V1P10 LED DR-MP3398 PANEL-RDL32HY REV 00 планки 3шт-5800-W323001-3P00 MAIN--5800-A6M31G-GP00 Регулировка производится по выводу  i set mp3398,  ток в исходе 295ма - после изменения -230ма Подробно см фото: Hidden Content Reply to this topic to see the hidden content. Hidden Content 730ea855a71e9d8b4d0

Posted Images

AKAI LEA-32B49P

LED DRIVER : OB3350

main: LAD.MV56U.D48

Panel: LSC320AN10-H02 

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HAIER LE43K6500U

Panel: LC430RGY-SJM1

Power Supply (PSU): TV5502-ZC02-01

MainBoard: T.MS6488E.U801

LED driver: OCP8128

После замены светодиодов ток составлял 230мА

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SAMSUNG UE40D8090YS

Panel: LTJ400HL05-J

main: BN41-01622B 

PSU: BN44-00427A 

LED Driver: SEM5025  - 4 шт. (4 канала)

Выходное напряжение на подсветку 127,3 В, ток 111 мА на канал.

За ток подсветки здесь отвечают четыре резистора: R9120, R9220, R9320, R9420 (все по 3,6 Ом)

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Edited by Alex1101
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Thomson T32RTE1010

main  TP.MS3463S.PB782 

driver MP3398A

display LVW320 CSDX E19 V80

подсветка: 3V*6led (последовательно 2 планки), заменил на примерно такие же новые, с небольшой подрезкой отражателя. 

ток 750 мА, после доработки ток 230 мА

изменил  

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Erisson 32LED80T2

Shasis : TP.MS3663S.PB8.18

Panel :E32-0A35

LED Driver : OB3353CP

Для снижения тока подсветки убираем резистор отмеченный на фото

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Hisense: H61A6100

PSU: RSAG7.820.7748/ROH

Led driver: 

HOZ1GN

Ток подсветки 376мА на канал. После доработки получаем ток 220мА на канал.

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NESONS 50F570T2

main  LDD.M3463.G

подсветка: 3V*4 led 

ток 570 мА, после доработки ток 230 мА
Доработка подсветки\занижение тока подсветки, удаляем 3 резистора как на фото
 

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TELEFUNKEN TF-LED22S14T2
main CV512L-Q24
Panel CX215DLEDM
LED driver  BIT3367A

2 линейки 3V*6LED последовательно, замена всех LED.

ток 290 мА

удалил 2 резистора (см фото)

ток 170мА

 

 

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Edited by mari
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ORION ПТ-81ЖК-100ЦТ (v1t07)

main : TP.MS3663S.PB818

led driver :OB3353CP

panel : PT320AT01-3

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HARPER 50F470T main LDD.M3463.G  ток подсветки 512 ма.

Удалил два резистора  номиналом 1 Ом . Ток уменьшился до 345 ма 

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ТВ: BBK 40LEX-5043-FT2C
MAIN: CV338H-U4
LED DRIVER: BIT3267

ток 188 мА, после доработки ток 138 мА

Для уменьшения тока подсветки удалить 2 резистора, как на фото

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SUPRA STV-LC40T440FL
MainBoard: JUC7.820.00123957
Panel C400F15-E2-S (G01)
LED driver MP4012
4 планки, 10 led*6V,  параллельно  соединены  2 группы по  20 led.  Замена всех сд. 2835
ток в одной группе 170 мА
доработка

в токовом датчике удаляем 5R1, ток 127 мА, удаляем еще одно 5R1, ток 90 мА

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Edited by mari
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SUPRA STV-LC32T820WL
MainBoard: T.MSD309.BA1B
PSU: MP123T.24TL
panel:TP315BT01-B
LED Driver:OB3350CP
Две линейки светодиодов на алюминиевом радиаторе, соединены последовательно.В каждой линейке 42 светодиода, 6 блоков по 7 светодиодов, подключенных параллельно. Замеры на первой планке: Выходное напряжение на подсветку  19,4В, ток 791 мА.

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SUPRA STV-LC32T650WL
Main 5800-A6M31G-0P1-00
V1P12
Panel RDL320HY(LD0-803)45
LED  ПЛАНКИ 5800-W32001-3P00, 7 led*3V последовательно.
LED driver MP3398А

замена планок на новые, ток 300 мА
Подробно  доработка на фото:

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  после доработки ток 180 мА

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DNS C28DC2000
PSU MP055D-1MF11
Драйвер OB3350
Светодиоды 3v

 

Ток 347мА
убрал резистор

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Ток стал 236мА

 

  

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ROLSEN RL-32D1309T2C

PSU:  XR7.820.246V1.1

Panel: M320X13-E1-H

Для снижения тока с 400mA до 210mA удалить

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 как на фото.

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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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