Technical description and composition of the TOSHIBA 40L7363RK TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 40L7363RK
Chassis / Version: L4300
Panel: LSC400HF03 T01
T-CON: T-CON: U27540D3D02GH
LED driver (backlight): B191-203
Power Supply (PSU): B191-203 P / N 0433-0086000
MainBoard: 32L4300 REV 1.02
IC MainBoard: CPU: MSD8881CV-W9N; DRAM: H5TQ2G63DFR; NAND Flash: THGBM4G4D1HBAIR; SPI Flash: / W25Q16CVSSIG; SOUND: TAS5708PHPR;
Tuner: TSU25-E02 / TDSS-G231D
Control: CT-90430
Specifications 40L7363
TOSHIBA 40L7363RK
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the TOSHIBA 40L7363RK TV, as well as the external elements of the housing. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the solders of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
In the case when the 40L7363RK does not turn on, does not respond to the remote control and buttons on the front panel, does not blink lights and does not show any signs of operability, the power supply module B191-203 P / N 0433-0086000 is probably faulty in this case. If it is serviceable for such manifestations, it is necessary to check the stabilizer (converter) of the processor power supply on the motherboard.In diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
Sometimes the TOSHIBA 40L7363RK TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the LSC400HF03-T01 panel backlight LEDs converter, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
To check the LED lines for breaks 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.
Diagnosis and repair of the TDSS-G231D motherboard is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - 32L4300 REV 1.02 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the supply voltage of the tuner TSU25-E02, which is usually within 30-33V, as well as other supply voltages on the tuner terminals.
Attention to the owners! Attempts to self-repair the TOSHIBA 40L7363RK TV are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 32L4332/L4333, 39/50/L4333, 32/39/50/L4353, 32/39/50/L4363, 40/50/L6353, 40/50/L6363, 40/50/58/L7333, 40/50/58/L7353, 40/50/58/L7363, Chassis L4300
Service Manuals with Schematic Diagrams 110 pages of 2013 on models ------------------> 32L4332, 32L4333, 39L4333, 50L4333, 32L4353, 39L4353, 50L4353, 32L4363, 39L4363, 50L4363, 40L6353, 50L6353, 40L6363, 50L6363, 40L7333, 50L7333, 58L7333, 40L7353, 50L7353, 58L7353, 40L7363, 50L7363, 58L7363
The appearance of the MainBoard 32L4300 is shown in the figure below:32L4300
32L4300 can be used in TVs:
TOSHIBA 32L4353RB (Panel T320HVN04), TOSHIBA 39L4353RB (Panel T390HVN01.0 / XL), TOSHIBA 40L6353RK (Panel LSC400HM06 T01), TOSHIBA 40L7356RK (Panel LSC400HF03 T01), TOSHIBA 40L7363RK (Panel LSC400HF03 T01), TOSHIBA 50L7363RK (Panel 50 inch), TOSHIBA 32L6353RK (Panel 96.32S14.001), TOSHIBA 39L4363D (Panel T390HVN01.0 XL), TOSHIBA 50L4353RK (Panel LC500DUE (SF)(R1)).
Main features of the TOSHIBA 40L7363RK device:
Installed matrix (LED panel) LSC400HF03 T01.
The matrix control uses the Timing Controller (T-CON) T-CON.
The LED driver B191-203 is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the TOSHIBA 40L7363RK TV is carried out by the power supply module B191-203, or its analogues.
MainBoard - the main board (motherboard) is a 32L4300 module using CPU chips: MSD8881CV-W9N; DRAM: H5TQ2G63DFR; NAND Flash: THGBM4G4D1HBAIR; SPI Flash: / W25Q16CVSSIG; SOUND: TAS5708PHPR; and others.
The TSU25-E02 / TDSS-G231D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LSC400HF03
Type: a-Si TFT-LCD, CELL
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: SPVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare (Haze 2.3%), Hard coating (2H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 5.1% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit), CIE1931 72%
Response Time: 6 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
TOSHIBA 40L7363 LED TV with LSC400HF03 LCD, 40 "(102 cm) diagonal size 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. This model uses side backlighting from Edge LEDs.
There is support for 3D images with active (shutter) technology for separating the right and left channels. 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).
The 40L7363 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. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the acoustic system of sound 20 W (2x10 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, SCART, RGB, VGA, HDMI x4, MHL, USB x2, Ethernet (RJ-45), Wi-Fi, WiDi, Miracast. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV in the operating mode from the network is 119 watts.
Overall dimensions: with stand 922x600x182 mm, without stand 922x559x69 mm.
TV Weight: with stand: 12 kg, without stand: 10.55 kg.
Attention! The LSC400HF03 T01 panel of the TOSHIBA 40L7363 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.