TFT TV - diagnosis and repair

Untitled
All the corny-sunken buttons, but once opened, then at least the memory read
Portable TV and DVD
Inverter board NBT-9299/9290
her IC SP5002 and 2 AO4606
Panel LTA090B400F
Payment Processor MST717A
Processor MST717A-LF
SEEPROM 24C16
SPI Flash PS25LV512


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LCD ROLSEN RL-20D20 sound is, the backlight is, OSD est.Net izobrazheniya.Net menyu.S Krenke 1117 (2,5) at the output 4V.Zamena Krenke restore the TV.


Power supply + power inverter TV SHARP LC-32D44E (RU)

Judging by the scheme - the same used in the model LC-32RD8E (RU).

Ingredients:
FA5500AN - PFC
TNY276PN - PWM BP DR
2SK4096 (2 pcs.) Keys off the main power supply
BD9883 - INVERTOR CONTROLLER.


Problem: not out of the DR. Initial examination of all elements of personal fault vyyavila.Pri attempt to force start by connecting disconnected from the train 10 feet connector CN7201 (PS_ON) with its 11 foot (BU5V) relay RL7101, which includes a main power supply, but the launch has not followed. Further searches led to "catch", gathered at the transistors Q7108, Q7110 and optocouplers PC7102, which is part of the protection scheme. Even if no protection signal on the LED of the optocoupler, and then - and even without it, "catch" block start the main power supply. Further testing revealed a significant discrepancy between reading a "digital" transistor Q7108 (DTC124EKA) with the same specimen, after which he was replaced. Now the "catch" fire, but on a signal from optocoupler! [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة] Further verification of all items in the "cold" side of the fault identified regulated zener IC7203 (TL431), standing in the operating system to stabilize the output voltage main power supply, resulting in a voltage at its output appears briefly, but were underestimated by about half. After replacing it the normal work of BS, well, as a consequence - TV has recovered!

OPERA 7 "TFT LCD at MST726C-LF



MST726C-LF
W25X10
24LC16
TDA9885TS
TUNER - TDQ-3AE1

1. When you run the "auto search" quickly runs through all the ranges, the screen is black, sometimes during the auto scan on the entire length of the light slips noise band.
The reason - not receiving power through a "key» QT7 to channel TDA9885TS. "Crawling" by PP have failed + was limited by time - received 5 volt EEPROM. TV will function normally.

2. When you turn there lights and immediately extinguished. Meals on it goes through a "key» - SMD - FET A77E type AO3407 (p-channel, 30V P-Channel MOSFET). In its absence, rather peremknut conclusions DS (working on TV - no effect).

3. No sound in one speaker, the second with the rattle disappears in 1-2 minutes. Also - excessive overheating of the VLF APA2068 (cooling - the sound is restored). After replacing it - everything is OK (now available for sale in our region - not).

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OPERA OP-1985 - 19 "TFT LCD SUPER SLIM 16mm on MST719DU-LF

MST719DU-LF
Tuner - SHJ-6A (FU8A051)
Touch keyboard.

TV predtorg, does not go to PP, if after several attempts to include - white screen. The reason - virtually invisible ("flickering") jumper on nutrition +3,3 V «glass" on the main board from the back of the sealing plug. After removal of the fault - check - "ragged" SMD-key (on the body A1sHB = SI2301 - Polevikov P-ch/20V/3A / - In the sale of such we have not found on "motherboards" - similar to ... Set the jumpers decided to completely all the problems (no "crime" in the TV - not seen [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة] ).

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Chinese fake "SONY"

The following information Party Stelt

On the muzzle Sony, no more signs opoznovatelnyh net.Defekt not included, no signs of life in general.
All naprugi on the board are normal, without pulsatsiy.Stavil pure memory-has not helped.
Vypayal brick (percent control) and warmed to a hair dryer (remembering the experience of recovery in the Samsung-MICOM ских Monica), the machine starts up again, rabotaet.Menyu is, everything is functioning, although the curve of Russian, but that he had had to take a Chinese-
I bet right now, sit-on setup channel bass runs, TV do not want to catch.
In general, after one and a half hours (and only on LP) was dead, and more come to life not trying to take zahotel.Pri percent, solid beleberda, at each attempt produces different values of the dump ... 44, 04, DE, ED, FE, etc. .. I read through ChipProg-2 from Fitton.

Composition of the TV "SONY" - Chinese.
TW9906, SyncMOS SM5964, NT68521AEFG, TPA1517NE, tuner B-MP11-EO, memory FM24S02, FM24C16
matrix
model: M190EN03 v.1
inverter
trance-UI11.7-049 DP, inverter-KA75000, key-4503SS
Photos below, the firmware will be tomorrow ... to remove Flash firmware was unable to form bitosti Flash.

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Continues the theme! Next Noneym with the proud name
Panasonic, with a standard nurse at FLI8125-LF. The full composition will not describe why again? At the beginning of the theme all chew. I should add that the panel is from the male, LTA230W1-L03. Deffekt was simple, the network has dried up the bank in one of series-connected feeders. The result - turned off the lights periodically. But is not the point. I want to put the firmware. Suddenly someone thread useful. Only once the standard jamb, is the sound of "stepping stone". Go tell that the firmware of

Sound healing, but! The device does not see the remote, and mixed up the buttons on the face. Now I will compare the two firmware Flash, if I find the row adjust the sound, make sure you lay out!
Firmware eprom and flash.
Photos of the trunk!

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Continues the theme. Feeder used in many Chinese FA. Information provided by the party Shrek. Micra PWM TL3845. The original scheme included.

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Firmware Chinese TV processors RTD2013B.


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Giblets GM5221H-LF TVP5147 matrix LTA230W1-L01 BP TL494

Replaced by a swollen 2200uF 25V, FUSE on 5c on the panel. I do not understand why the board panel is LM2596-5 if it comes 5c.
Apparatus vobschem works. Leaked firmware, can someone come in handy.

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LCD TV CHANGHONG LT19700
Percent: MST718BE (U11)
isp flash PS25LV020 (U12)
eeprom 24C32 (U13, when installing a clean device itself prescribes it)
Tuner TMI9-E22I11H
ULF TDA1517P
Inverter FSP055-2PI03

Appendix photo inverter rating plate panel and lane.
Brought the problem of image, if not the brightness and the image was divided in half, official information was not there either.
Cured installing clean eeprom, device itself prescribes it, including the service. Output from the service is in the service mode type factory out.



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Apparatus Erisson 32LS16, was not included in the power supply STV250TV bulged C12, C15, C23, C14, went into a short circuit Q3, Q11, has fallen off the foot of the L1 and blown fuse F1, diode D1 remained intact. Replacing these parts - it worked.

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TV XORO HTC2200W came device is not included. After replacing the capacitors in the power supply (remote) the TV was turned on, but the image (figure 1) krasnoe.OSD in order (pic2). After resetting the main menu, the image comes back to normal (ris3), but before the first shutdown in standby mode on or off the network.
after flash 24s16 problem disappeared
Board layout details provided aleh3 (ris4)
firmware gave Boris

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An unnamed Chinese
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]Diagnosis, the power supply is not keeping the load
was found burned drosel
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط]
Such a ring could not be found
Was wound on the two rings from the computer PSU
24vitka on shinu12volt and 48vitkov rail 24volta
that's what happened
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Sketched diagram BP
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Chinese fake "SONY"

The following information Party Stelt

On the muzzle Sony, no more signs opoznovatelnyh net.Defekt not included, no signs of life in general.
All naprugi on the board are normal, without pulsatsiy.Stavil pure memory-has not helped.
Vypayal brick (percent control) and warmed to a hair dryer (remembering the experience of recovery in the Samsung-MICOM ских Monica), the machine starts up again, rabotaet.Menyu is, everything is functioning, although the curve of Russian, but that he had had to take a Chinese-
I bet right now, sit-on setup channel bass runs, TV do not want to catch.
In general, after one and a half hours (and only on LP) was dead, and more come to life not trying to take zahotel.Pri percent, solid beleberda, at each attempt produces different values of the dump ... 44, 04, DE, ED, FE, etc. .. I read through ChipProg-2 from Fitton.

Composition of the TV "SONY" - Chinese.
TW9906, SyncMOS SM5964, NT68521AEFG, TPA1517NE, tuner B-MP11-EO, memory FM24S02, FM24C16
matrix
model: M190EN03 v.1
inverter
trance-UI11.7-049 DP, inverter-KA75000, key-4503SS
Photos below, the firmware will be tomorrow ... to remove Flash firmware was unable to form bitosti Flash.
'll Put my two cents worth ... This board variant PT 551F.
Ironically, even the documentation is found.
SM5964, heating did not help ((((Monument with mattress TOSHIBA.


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