Technical description and composition of the TV SHARP LC-22LE430RU-BK, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-22LE430RU-BK
Panel: M215HW01 VB SB // M215HW01 (VB) (SB)
LED driver (backlight): 715G4584-P01-W20-003H B4060PA3Q
PWM LED driver: OZ9998BCN (16)
Power Supply (PSU): 715G4584-P01-W20-003H B40BZ4Q
PWM Power: 4482 (8), LD7750RGR (7)
MainBoard: 715G4504-M2A-000 005BZ-SIDE
IC MainBoard: TAS5717L, WM8524G, N351 5173, N331 G965-25, MAX3232
Tuner: TDTK-G731D
Control: GL220
Technical Specifications LC-22LE430
SHARP LC-22LE430RU-BK
General repair guidelines for TV LCD LED
SHARP LC-22LE430RU-BK, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
Faults in the 715G4584-P01-W20-003H B40BZ4Q power supply module can be expressed in different ways, for example, the SHARP LC-22LE430RU-BK does not turn on at all and the control lights on its front panel do not light up and do not blink, and there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. 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.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip 4482 (8), LD7750RGR (7) can also cause a breakdown of the power switch of the converter.
In cases where the SHARP LC-22LE430RU-BK TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the M215HW01 (VB) (SB) panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
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 detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
Repair of the motherboard 715G4504-M2A-000 005BZ-SIDE should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - TAS5717L, WM8524G, N351 5173, N331 G965-25, MAX3232 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If you suspect a malfunction of the TDTK-G731D tuner, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
We recommend the owners of the LC-22LE430RU-BK TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual / schematic diagram ------------> Sharp LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E
LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E.
The appearance of the MainBoard 17MB62-2.6 is shown in the figure below:The 17MB62-2.6 motherboard is made using the MSD9WB9PT-2 processor, combined with a scaler. For its operation, random-access memory (DDR) K4T1G164QF, or HY5PS121621C, and NAND512-A read-only memory (ROM) are used. To ensure processor power, DC / DC converters with output voltages of 1.2V, 2.5V, 3.3V are used. For DDR, the voltage is 1.8V, for NAND it is either 1.8 or 3.3V. It is advisable to start the repair by checking the supply voltage in stand-by mode (12V), 5V and 3.3V. Further, in the operating mode, it is necessary to check the operability of all linear stabilizers and DC / DC voltage converters used to power the MB and LCD panel chips. If there is a backlight and no image, depending on the type of panel used, its 5V or 12V power supply can be measured directly on the LVDS connector.
A typical malfunction of this board is a NAND software failure. At the same time, the TV does not turn on and blinks alternately with indicators on the panel. If the software of the SPI FLASH chip, in which the bootloader is located, is not damaged, NAND is updated via the USB port with standard software. Otherwise, it makes sense to try downloading the software if there is a mboot.bin file on the media, which can be used as standard SPI FLASH content.
17MB62-2.6 can be used in TVs:
PHILIPS 19PFL2908H/60 (Panel HT185WX1-300), PHILIPS 22PFL2807H/60 (Panel LM215WF4 (TL)(G1)), PHILIPS 24PFL2908H/60 (Panel V236BJ1-LE1 Rev.C2), PHILIPS 22PFL2908H/60 (Panel M215HGE-L21 ), SHARP LC-22LE240RUX (Panel 22 "), SHARP LC-40LE240RUX (Panel LTA400HM13 C04), SHARP LC-32LE140RU LC-32LE140 (Panel LC320EXN), TOSHIBA 23KL934R (Panel LTM230HT10 75029655), TOSHIBA 32KL934R (Panel LTA320AN12 T01).
Main features of the SHARP LC-22LE430RU-BK device:
Installed matrix (LED-panel) M215HW01 VB SB or M215HW01 (VB) (SB).
The LED driver 715G4584-P01-W20-003H is used to power the backlight LEDs, it is controlled by the OZ9998BCN PWM controller (16).
The necessary supply voltages for all nodes of the SHARP LC-22LE430RU-BK TV are generated by the power supply module 715G4584-P01-W20-003H, or its analogs using microcircuits 4482 (8), LD7750RGR (7).
MainBoard - the main board (motherboard) is a 715G4504-M2A-000 module, using TAS5717L, WM8524G, N351 5173, N331 G965-25, MAX3232 and others.
The TDTK-G731D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: M215HW01 VB
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: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 3.8 / 1.2 (Tr / Td)
Frequency: 60Hz
Lamp Type: 16S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V