Technical description and composition of the SHARP LC-32LE154 TV, panel type and applicable modules. The composition of the modules.SHARP LED
Model: LC-32LE154 LC-32LE154RU
Chassis / Version: 32LE154
Panel: HV320WX2-201
LED backlight: LBM320M1 402-DG-2U (HF) (0)
T-CON: HV320WXC-200_X-PCB-X0.0
LED driver (backlight): integrated into PSU
PWM LED driver: SSC9522S
MOSFET LED driver: K4A60DAR
Power Supply (PSU): UE-3630-01UN
PWM Power: STR-A6069H, NCP1608, FSFR1800
MainBoard: 32LE154 REV.1.01 A
IC MainBoard: CPU: MSD8841BX-VN, SPI FLASH: W25Q64
Tuner: TDSY-G230D
Technical Specifications LC-32LE154
SHARP LC-32LE154
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SHARP LC-32LE154 TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light up and do not blink.
With such manifestations, in some cases, the UE-3630-01UN power supply module is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
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.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits STR-A6069H, NCP1608, FSFR1800 are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it reacts to the remote control, channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In such cases, the most likely malfunction of the LED backlight elements. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 32LE154 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its CPU components: MSD8841BX-VN, SPI FLASH: W25Q64. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
If you suspect a malfunction of the TDSY-G230D tuner, first of all, you need to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
Owners and users of the SHARP LC-32LE154 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Service Manual with Schematic Diagram 88 pages of 2014 FOR the LC-32LE154E, LC-32LE154V, LC-32LE154RU
FIRMWARE SPI FLASH --------> SHARP LC-32LE154 LC-32LE154RU, Main: 32LE154 REV.1.01 A, Panel: HV320WX2-201
Main features of the SHARP LC-32LE154 device:
Installed matrix (LED-panel) HV320WX2-201.
The matrix control uses the Timing Controller (T-CON) HV320WXC-200_X-PCB-X0.0.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SSC9522S PWM controller. As the power elements of the LED driver, keys of the K4A60DAR type are used.
The necessary supply voltages for all nodes of the SHARP LC-32LE154 TV are generated by the power module UE-3630-01UN, or its analogs using microcircuits STR-A6069H, NСP1608, FSFR1800.
MainBoard - the main board (motherboard) is a 32LE154 module using CPU chips: MSD8841BX-VN, SPI FLASH: W25Q64 and others.
The TDSY-G230D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: BOE
Model: HV320WX2-201
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AFFS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 6.6% (with Polarizer)
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V