Technical description and composition of the IZUMI TL37F210B TV, type of panel and applicable modules. The composition of the modules.Izumi
Model: TL37F210B
Chassis / Version: 090-A6M480-00
Panel: LC370WUN (SC) (A1)
T-CON: 6870C-0310A
Inverter (backlight): 6632L-0618A KLS-EE37ARF14
PWM Inverter: BD9215AFV, AS324M-E1, KIA78M05F
Power Supply (PSU): MLT668TL
PWM Power: L6562D, LD7535, SG3525
MOSFET Power: 13N50C, 5N50CF
MainBoard: 090-A6M480-00
IC MainBoard: MST6M48RHS-LF-Z1-SJ, W25Q32
Tuner: AFT7 / W110G
Technical Specifications TL37F210B
IZUMI TL37F210B
General recommendations for repairing TV LCD
Possible manifestations of defects
- The IZUMI TL37F210B TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
Often in such cases, the MLT668TL power module is faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches (13N50C, 5N50CF) and rectifier diodes in the converters for possible breakdown.
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.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers L6562D, LD7535, SG3525, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 090-A6M480-00 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - MST6M48RHS-LF-Z1-SJ, W25Q32. Defective components should be replaced.
If the TV works normally from external devices, but does not tune into television channels, the AFT7 / W110G 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.
Attention TV owners! Attempts at self-repair of IZUMI TL37F210B are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> IZUMI TL37F210B, Main: 090-A6M480-00, Panel: LC370WUN (SC)(A1)
The appearance of MainBoard 090-A6M480-00 is shown in the figure below:090-A6M480-00
The appearance of the power supply
Main features of the IZUMI TL37F210B device:
Installed matrix (LCD panel) LC370WUN (SC) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-0310A.
To power the backlight, an inverter 6632L-0618A is used, it is controlled by the PWM controller BD9215AFV, AS324M-E1, KIA78M05F.
The required supply voltages for all nodes of the IZUMI TL37F210B TV are generated by the MLT668TL power supply module or its analogs using L6562D, LD7535, SG3525 microcircuits and 13N50C, 5N50CF type power switches.
MainBoard - the main board (motherboard) is a module 090-A6M480-00, using microchips MST6M48RHS-LF-Z1-SJ, W25Q32 and others.
The AFT7 / W110G tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC370WUN-SCA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering)
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8/10-bit), 51 pins
Voltage: 12.0V
TV LCD TL37F210B
Display diagonal: 37 "(94 cm)
Screen Format: 16: 9
Resolution: 1920x1080
Refresh Rate: 50 Hz
HD Support: 1080p Full HD
Brightness: 500 cd / m2
Contrast Ratio: 1500: 1
Pixel Response Time: 5 ms
Progressive scan: yes
TV Standards: PAL, SECAM, NTSC
DTV Formats: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Stereo sound: yes
Acoustics: two speakers
Interface: AV, Audio x2, S-Video, Component, SCART, RGB, VGA, HDMI x2, USB
Headphone jack: yes
TV Weight: 19 kg