Technical description and composition of the TV SHARP LC-40FG3242E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-40FG3242E
Chassis / Version: TP.MS3463S.PB711
Panel: LSC400HN02
LED backlight: CRH-P40KP35350308667-REV1.4
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-8 Package
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: N-FET TO-220
MainBoard: TP.MS3463S.PB711
IC MainBoard: CPU: MSD3463, SPI FLASH: 25Q64
Tuner: CDT-9NT372-RF01 + SAT
Technical Specifications LC-40FG3242E
SHARP LC-40FG3242E
General repair guidelines for TV LCD LED
Possible malfunctions
- The SHARP LC-40FG3242E TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
In this case, the main power source, the AC / DC network voltage converter, whose elements in this model are located on the MainBoard TP.MS3463S.PB711 general board, may turn out to be faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, it is necessary to check the serviceability of power switches (N-FET TO-220) and rectifier diodes for possible breakdown (short circuit).
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM SOT23-6 PWM chips are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
Often in such cases, there is no LED backlight. Usually the cause of the malfunction is in the breakage of the LEDs, or in the connectors of the LED strips, but sometimes the LED driver also turns out to be faulty.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the TP.MS3463S.PB711 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - CPU: MSD3463, SPI FLASH: 25Q64 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before changing the tuner CDT-9NT372-RF01 + SAT, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured at the corresponding terminals of the tuner and checked for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
We recommend the owners of the LC-40FG3242E TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
The appearance of MainBoard TP.MS3463S.PB711 is shown in the figure below:TP.MS3463S.PB711
Main features of the SHARP LC-40FG3242E device:
Installed matrix (LED-panel) LSC400HN02.
To power the backlight LEDs, a converter is used, combined with the TP.MS3463S.PB711 main board, controlled by the SO-8 Package PWM controller. As power elements of the LED driver, keys of the TO-252 type are used.
The power module is combined with the MainBoard and is designed according to a flyback AC / DC voltage converter using PWM SOT23-6 microcircuits and power switches of the N-FET TO-220 type.
MainBoard - the main board (motherboard) is a module TP.MS3463S.PB711, using CPU chips: MSD3463, SPI FLASH: 25Q64 and others.
The tuner CDT-9NT372-RF01 + SAT provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LSC400HN02-W
Type: a-Si TFT-LCD, CELL
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: SVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare, Hard coating (2H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 4000: 1
Display Colors: 1.07B (10-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
LED TV SHARP LC-40FG3242E with LCD LSC400HN02, diagonal size 40 "(102 cm) in 16: 9 format. Dynamic contrast ratio of 1,000,000: 1 is achieved by controlling the operation of LEDs (LED) depending on the brightness of the plot. Models implemented LED (LED) backlight.
The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD).
Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x3, USB x2. An output for connecting headphones is provided.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
The power consumed by the TV from the network in operating mode is 80 watts.
Overall dimensions: with stand 921x576x199 mm, without stand 921x542x84 mm.
Mass of the TV: 8.15 kg.
Attention! The LSC400HN02 panel of the SHARP LC-40FG3242E LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.