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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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HISENSE LTDN50K2204WTEU
RSAG7.820.5842/ROH 
HD500DF-B54

HLL-4855WF

11 планок по 5 светиков 3030 - 3V

ток до 0,41А, после 0,25А

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Toshiba 32S2550EV

Main (PSU) TP.MS3463.PB901

LED driver - OB3350CP

Заслуживает внимание необычное расположение родных светодиодных планок

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Планки такого типа

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Ввиду невозможности достать оригинальные и нежелания "передувать" отдельные диоды пришлось делать так

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Ток через новые планки составил 250 мА.

После выпаивания  резистора

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ток уменьшился до 190 мА

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ERISSON 50LEE17

Panel: CX500DLEDM

PSU: AY160D-4HF12-082

Main: CV9202H-T

LED driver: BD9211F

Подсветка пять планок по 14 СД, соединены последовательно. Изначально ток подсветки 600 ма. 

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TOSHIBA 32W2453RK

Блок питания: TC25132B

LED драйвер: HAI7223PE

В панели 3 линейки по 6 светодиодов 3528 LATWT470RELZK

Изначально установленный ток 350 mA, после доработки 170 mA.

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Main: LDD.M3663.A36

LED Driver: BIT3368O

Ток подсветки 280mA после доработки 190 mA

Подробно доработку смотрим на фото:

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TOSHIBA 40RL838

panel: LTA400HM15

PSU: V71A00022900

Led Driver: SSL400_0E2C  REV0.0 (имс: SSL100SN)

Выходное напряжение на подсветку: 97,2 В, ток 120 мА на канал (здесь четыре канала)

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Posted (edited)

SAMSUNG UE40ES6580S

Panel: LTJ400HV07-B

main: BN41-01807А

PSU: BN44-00520C

LED Driver: SLC5012M  - 2 шт. (по 2 канала)

Выходное напряжение на подсветку 91,5 В, ток 112 мА на канал.

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Edited by Alex1101
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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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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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Posted (edited)

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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Posted (edited)

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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Posted (edited)

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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