Technical description and composition of the IZUMI TLE32D400B TV, type of panel and applicable modules. The composition of the modules.IZUMI LED
Model: TLE32D400B
Chassis / Version: T.MSD309.9B
Panel: V315H3-LE4
MainBoard: T.MSD309.9B 10345
IC MainBoard: CPU: MSD309BT-Z1, FLASH: GD25Q32, AIC2857F, R2A15122
Tuner: XDTT-6F1C / T1146
Technical Specifications TLE32D400B
IZUMI TLE32D400B
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular IZUMI TLE32D400B, it is advisable to start with a careful external examination of internal and external elements. In some cases, visible external damage to the elements can indicate the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of electronic circuit nodes. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the TLE32D400B TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power supply module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some IZUMI models. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers 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.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
Sometimes the IZUMI TLE32D400B 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 converter for the backlight LEDs of the V315H3-LE4 panel, 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).
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
On the motherboard T.MSD309.9B 10345, in the event of a malfunction, you should first check the performance of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
When repairing an MB board, you need to check its Flash components: 25Q32. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
Attention to users! Self-repair of the IZUMI TLE32D400B TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Chassis MSD309B Schematic diagram
FIRMWARE FOR SPI FLASH -----------> IZUMI TLE32D400B, Main: T.MSD309.9B 10345, Panel: V315H3-LE4
In case of failures in Winbond's SPI FLASH software, we recommend that you replace the chip itself with a new one. Sometimes Winbond microcircuits can recover for some time after high-temperature exposure, for example, heating with a soldering station or a lighter, which is sometimes enough to read its contents.
Repair MainBoardThe appearance of MainBoard T.MSD309.9B is shown in the figure below:
T.MSD309.9B
MainBoard T.MSD309.9B uses the MSD309B processor, DDRAM random access memory (RAM) in BGA version and SPI Flash ROM type 25Q32 (4Mb).
It is advisable to start the repair of the motherboard by checking the voltage converters and linear stabilizers necessary to provide power to the nodes in the operating and standby modes. The processor core is powered by + 1.5V. Also, the processor voltage requires + 2.5V and + 3.3V.
If the display backlight is working properly and there is no image, it is necessary to check the panel power (depending on the type, + 5V or + 12V), which is more convenient to measure directly on the LVDS connector. If, in the presence of all the supply voltages, the TV does not enter the operating mode, does not respond to the Remote Control and control buttons, you should update the SPI Flash firmware.
T.MSD309.9B can be used in TVs:
BBK LEM3242DT (Panel LC320EXN SDA1), BBK LEM3241FDT (Panel 32 "), BBK LEM2687FDT (Panel V260H1-LE1), IZUMI TLE32D400B (Panel V315H3-LE4), SUPRA STV-LC3245LF (Panel TC-315F1H2), SUPRA STV-LC39T820FL (Panel TC390FP01-B), SUPRA STV-LC46T810FL (Panel 1080p Full HD 1920x1080), SUPRA STV-LC39T810FL (Panel TC390FP01-A).
Main features of the IZUMI TLE32D400B device:
Installed matrix (LED-panel) V315H3-LE4.
The required supply voltage for all nodes of the TV IZUMI TLE32D400B provides a switching power supply.
MainBoard - the main board (motherboard) is a module T.MSD309.9B, using CPU chips: MSD309BT-Z1, FLASH: GD25Q32, AIC2857F, R2A15122 and others.
The tuner XDTT-6F1C / T1146 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V315H3-LE4
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: MVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 6000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V