Technical description and composition of the SAMSUNG UE19C4000 TV, panel type and modules used. The composition of the modules.SAMSUNG LED
Model: UE19C4000 PW
Panel: MT185GW01
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00345A
PWM Power: PFC, PWM
MainBoard: BN41-01379A BN94-02758C
IC MainBoard: SEMS18 DNIE 1025B-LF, SUB: WT61P802, Eeprom: 24C256, 24C02
Tuner: BN40-00172A
UE19C4000 Specifications
SAMSUNG UE19C4000
General recommendations for TV LCD LED repair
Possible manifestations of defects
- SAMSUNG UE19C4000 does not turn on, does not respond to buttons and the remote control, indicators on the front panel do not light or flash.
A fault in such cases should be started to look in the circuits of the BN44-00345A power supply. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of the PWM regulator, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) PFC, PWM are usually checked by replacing them with new ones, or knowingly working.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
Usually, in such cases, there is no backlighting of the LED panel (matrix). The reason may be in the breakage of the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings connectors,
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
If SAMSUNG UE19C4000 has no picture, but there is sound, often the MT185GW01 display backlight simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the MT185GW01 LCD panel - a process that requires experience and qualifications from the master. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see the light through the holes in the panel case.
In this case, the panel may also be faulty - damage to the strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard BN41-01379A turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within the normal range, it is necessary to trace the passage of LVDS signals from MainBoard BN41-01379A, as well as synchronization signals to the loops with drivers, with an oscilloscope.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
Repair or diagnostics of the BN41-01379A motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace elements SEMS18 DNIE 1025B-LF, SUB: WT61P802, Eeprom: 24C256, 24C02. BGA chip faults are usually easy to detect by warm-up.
If the TV operates normally from external devices, but does not tune to TV channels, the BN40-00172A tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.
We remind users again! Attempts to self-repair the SAMSUNG UE19C4000 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
1 - DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Chassis: N92B for models UE19C4000PW, UE22C4000PW, UE26C4000PW
2 - DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Chassis: N92B for models UE19C4000PW, UE22C4000PW, UE26C4000PW
Additional MainBoard Repair
The appearance of the MainBoard BN41-01379A is shown in the figure below:BN41-01379A
External view of the power supply
Main features of SAMSUNG UE19C4000 device:
Installed matrix (LED panel) MT185GW01.
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE19C4000 TV is carried out by the BN44-00345A power module, or its analogs using PFC, PWM microcircuits.
MainBoard - the main board (motherboard) is a BN41-01379A module, using SEMS18 DNIE 1025B-LF microcircuits, SUB: WT61P802, Eeprom: 24C256, 24C02 and others.
The BN40-00172A tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: INNOLUX
Model: MT185GW01 V.3
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 13S3Px2CN WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V.
There are files to download for the UE19C4000PWXRU model from the manufacturer:
Latest software updates, firmware (latest firmwares):
File type File name Version Date Size
Update file (USB) T-TDT5DEUC_1024.1.exe T-TDT5DEUC-1024.1 04/15/2011 47.3 Mb
Update file (USB) T-MSX5DEUC_2013.0.exe T-MSX5DEUC-2013.0 07.25.2012 46.48 Mb
User Manuals and Instructions:
File type File name Version Date Size
User manual BN68-02655A-00L06-0304.pdf 1.0 30.03.2010 42.68 Mb
User manual BN68-02655H-00L04-0405.pdf 1.0 06.05.2010 29.02 Mb
Power Consumption Guide 4Series_Power_consumption_LED_TV.pdf 1.0 24.08.2010 0.19 Mb
Power Consumption Guide 4Series_Power_consumption_LED_TV.pdf 1.0 27.04.2010 0.17 Mb
Files can be downloaded on the manufacturer's website for the UE19C4000PWXRU model.
SAMSUNG UE19C4000 TV with LCD MT185GW01, diagonal 19 "(48 cm) in 16: 9 format. Dynamic contrast ratio of 2,000,000: 1 is achieved by special control of the LEDs depending on the brightness of the scene. display - Edge LED.
The MT185GW01 sensor and the MainBoard BN41-01379A software provide high quality HD viewing at 1366x768 pixels and 720p (HD Ready). The input analog video signal is decoded in PAL, SECAM, NTSC systems. Graphic processing of a digital signal is performed in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM stereo audio processing system and the Sound Surround function are used.
Communication with other devices via an external interface is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI x2, USB. A headphone jack is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is provided. This interface supports standard resolutions: 640x480, 800x600, 1024x768, 1360x768.
The digital tuner can receive TV channels in DVB-T MPEG4, DVB-C standards.
The power supply unit BN44-00345A is used.
Dimensions: with stand 478x374x190 mm, without stand 478x321x30 mm.
TV weight: with stand: 3.9 kg, without stand: 3.6 kg.
Attention! Panel MT185GW01 of SAMSUNG UE19C4000 LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.