Technical description and composition of the IZUMI TL32H501B TV, type of panel and applicable modules. The composition of the modules.Izumi
Model: TL32H501B
Chassis / Version: 090-6M16TV-01
Panel: LTA320AP17
Lamp backlight: 4 Lamp CCFL
Inverter (backlight): integrated into PSU
Trans Inverter: TLT-2503
Power Supply (PSU): IPB732 H
PWM Power: SG3525AN, L6562A
MainBoard: 090-6M16TV-01
IC MainBoard: Spi Flash: F16-100, Eeprom: 24C64
Tuner: AFT7 / W110G
Technical Specifications TL32H501B
IZUMI TL32H501B
General recommendations for repairing TV LCD
Possible manifestations of defects
- The IZUMI TL32H501B TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
With such manifestations, a malfunction is most likely to be detected in the IPB732 power supply module. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke the excess of maximum current or voltage values. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) SG3525AN, L6562A, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
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 indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 090-6M16TV-01 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - Spi Flash: F16-100, Eeprom: 24C64 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
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.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
FIRMWARE FOR SPI FLASH -----------> IZUMI TL32H501B, Main: 090-6M16TV-01, Panel: LTA320AP17
The appearance of MainBoard 090-6M16TV-01 is shown in the figure below:090-6M16TV-01
The appearance of the power supply
Main features of the IZUMI TL32H501B device:
Installed matrix (LCD-panel) LTA320AP17.
To power the backlight, a converter is used, combined with a power supply. A transformer TLT-2503 is installed in the inverter converter.
The necessary supply voltages for all nodes of the IZUMI TL32H501B TV are generated by the IPB732 power module or its analogs using SG3525AN, L6562A microcircuits.
MainBoard - the main board (motherboard) is a 090-6M16TV-01 module, using Spi Flash chips: F16-100, Eeprom: 24C64 and others.
The AFT7 / W110G tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AP17
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 9/9 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V