Technical description and composition of the DEXP F43D8100H TV, panel type and applicable modules. The composition of the modules.DEXP LED
Model: F43D8100H
Chassis / Version: TP.MS6486T.PB753
Panel: T430HVN01.2
LED backlight: JL.D42641330-003CS-M
T-CON: T430HVN01.3 XL + T430HVN01.3 XR
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: TO-252
MainBoard: TP.MS6486T.PB753
Tuner: DVB-T2 + SAT
Control: IR: RSAG7.820.6143 / ROH, WIFI: WU182-LO
Technical Specifications F43D8100H
DEXP F43D8100H
General repair guidelines for TV LCD LED
Possible malfunctions
- DEXP F43D8100H does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
In this case, first of all, you should check the operability of the main power source - AC / DC network voltage converter, all of whose elements are located on the MainBoard TP.MS6486T.PB753 board. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (TO-252) and rectifier diodes for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM) SOIC8, if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
The most likely in these cases is a malfunction of the LED backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the TP.MS6486T.PB753 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software).
If the TV works normally from external devices, but does not tune into television channels, the DVB-T2 + SAT tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Once again, remind users! Attempts to independently repair the DEXP F43D8100H TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Repair MainBoard
The appearance of MainBoard TP.MS6486T.PB753 is shown in the figure below:
TP.MS6486T.PB753
Main features of the DEXP F43D8100H device:
Installed matrix (LED panel) T430HVN01.2.
The matrix control uses the Timing Controller (T-CON) T430HVN01.3.
To power the backlight LEDs, a converter is used, combined with the main board TP.MS6486T.PB753.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits and TO-252 type power switches.
MainBoard - the main board (motherboard) is a module TP.MS6486T.PB753.
The DVB-T2 + SAT tuner allows you to receive television programs and tune to channels.
TV DEXP F43D8100H with LCD T430HVN01.2, diagonal size 43 "(109 cm) 16: 9 format. The required brightness of the screen 200 cd / m² is provided by LED backlight LED. Contrast - the ratio of maximum brightness to minimum is 3000: 1. The LCD panel uses direct pixel illumination with rear LEDs - Direct LED.The TV features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in the graphic resolution of the standard 1080p (Full HD).
The F43D8100H is equipped with SMART software, integrated applications and the ability to work on the Internet. Connecting to the Internet can be done via Wi-Fi. Supported media file formats: MP3, MPEG4, MKV, JPEG.
The power of the speaker system of sound 14 W (2x7 W) provide 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, Ethernet (RJ-45), Wi-Fi. 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 working in the network mode is 75 watts.
Overall dimensions: with stand 971x613x203 mm, without stand 971x567x92 mm.
TV Weight: with stand: 9 kg, without stand: 8.8 kg.
Attention! The T430HVN01.2 panel of a DEXP F43D8100H 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.
