Technical description and composition of the IZUMI TL22F405B TV, type of panel and applicable modules. The composition of the modules.Izumi
Model: TL22F405B
Chassis / Version: B.SPC81B-1
Panel: M215HW01 V.0
Inverter (backlight): BSFI # 2242-76B VER: 1.0
PWM Inverter: OB3302CP
MOSFET Inverter: ST4828N
Power Supply (PSU): BSFP2206001AK
PWM Power: LD7575PS
MOSFET Power: TSF8N60M
MainBoard: B.SPC81B-1 9245
IC MainBoard: Spi Flash: EN25T80-75HCI, Eeprom: 24C32, Audio: YD1517P
Tuner: TDQ-6F6 / T1260W
Technical Specifications TL22F405B
IZUMI TL22F405B
General recommendations for repairing TV LCD
Repair of the IZUMI TV with the B.SPC81B-1 chassis should begin with a fault diagnosis, which involves a careful inspection of the external and internal elements of the device. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In cases when the IZUMI TL22F405B TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink and there are no sounds and no signs of operability when turning on, the BSFP2206001AK power supply module is most likely faulty or there is no processor power on the motherboard (a typical defect of some IZUMI TVs). In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
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).
If the IZUMI TL22F405B TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR. Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
On the B.SPC81B-1 9245 motherboard, in case of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software). In some cases, they require checking or replacing (if necessary) the elements of the MB board (SSB) - Spi Flash: EN25T80-75HCI, Eeprom: 24C32, Audio: YD1517P. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Attention! Users and owners of TL22F405B TVs who do not have the appropriate qualifications, knowledge and experience are strongly advised against self-repair attempts in order to avoid negative consequences that could lead to complete non-repairability of the device.
FIRMWARE FOR SPI FLASH -----------> IZUMI TL22F405B, Main: B.SPC81B-1 9245, Panel: M215HW01 V.0
The appearance of the MainBoard B.SPC81B-1 is shown in the figure below:B.SPC81B-1
B.SPC81B-1 can be used in TVs:
AKAI LTC-15S04 LTC-15S04M (Panel LTA150XH-L06), BBK LD2424HDU (Panel HT235F01-100), FUSION FLTV-19W6 (Panel M190A1-P0A), FUSION FLTV-22W6 (Panel CLAA215FA), IZUMI TL22F405R (Panel M215HW01 V.0), IZUMI TL22F405B (Panel M215HW01 V.0), IZUMI TL19H405B (Panel M190MWW3).
The appearance of the power supply
Main features of the IZUMI TL22F405B device:
Installed matrix (LCD panel) M215HW01 V.0.
The BSFI # 2242-76B inverter is used to power the backlight lamps; it is controlled by the OB3302CP PWM controller. As power elements of the inverter, keys of the ST4828N type are used.
The necessary supply voltages for all nodes of the IZUMI TL22F405B TV are generated by the BSFP2206001AK power supply module or its analogs using LD7575PS microchips and TSF8N60M type power switches.
MainBoard - the main board (motherboard) is a B.SPC81B-1 module, using Spi Flash chips: EN25T80-75HCI, Eeprom: 24C32, Audio: YD1517P and others.
The TDQ-6F6 / T1260W tuner provides TV reception and channel tuning.
Information from an alternative source:
IZUMI TL22F405B
Panel Type (Matrix): M215HW01 V.0
Motherboard: B.SPC81B-1 9245, U11: EN25T80-75HCI, U13: ISSI 936 432a-2GL (24C32), U9-U10: ISSI 936 402B-2GL X2 (24C02), U14: TDA9685TS, U3: MP1423DN, U17 : 74HC4052D, U2: AOZ1071AI, U15: TDA1517P, Tuner: TDQ-6F6 / T1260W
T-con: M215HW01 V.0 CTRL PCB 21M01-C02
Invertor: BSFI # 2242-76B VER: 1.0, U301: OB3302CP, U302: ST4828N
PSU: BSFP2206001AK, IC1: LD7575PS, Q1: TSF8N60M
Additional technical information about the panel:
Brand: AUO
Model: M215HW01 V0
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 3.8 / 1.2 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V