Technical description and composition of the TV SHARP LC-32CHE4042E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-32CHE4042E
Chassis / Version: TP.MS3463S.PB711
Panel: LSC320AN02
LED backlight: A6M01H2-QA664CP CRH-P32CA3535T030751U-REV1.0
T-CON: C320AN02S4LV0.1 REV0.0
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.MS3463S.PB711
IC MainBoard: CPU: MSD3463, SPI FLASH: 25Q64
Tuner: CDT-9NT372-RF01
Technical Specifications LC-32CHE4042E
SHARP LC-32CHE4042E
General repair guidelines for TV LCD LED
Possible malfunctions
- SHARP LC-32CHE4042E does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
The malfunction in such cases should be sought in the elements of the power source - mains voltage converter (AC / DC), which is located on the MainBoard TP.MS3463S.PB711 main board. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In case of breakdowns of semiconductors in secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often 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 SOT23-6 PWM controllers, 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.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source. By opening the panel, each LED can be checked separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- 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 TP.MS3463S.PB711 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: MSD3463, SPI FLASH: 25Q64 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the CDT-9NT372-RF01 tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Once again, remind users! Attempts to self-repair a TV SHARP LC-32CHE4042E without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
FIRMWARE SPI FLASH SHARP LC-32CHE4042E, Main: TP.MS3463S.PB711, Panel: LSC320AN02
The appearance of MainBoard TP.MS3463S.PB711 is shown in the figure below:TP.MS3463S.PB711
Main features of the SHARP LC-32CHE4042E device:
Installed matrix (LED panel) LSC320AN02.
The matrix control uses the Timing Controller (T-CON) C320AN02S4LV0.1.
To power the backlight LEDs, a converter is used, combined with the main board TP.MS3463S.PB711.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a module TP.MS3463S.PB711, using CPU chips: MSD3463, SPI FLASH: 25Q64 and others.
The tuner CDT-9NT372-RF01 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LSC320AN02-0
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (2H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 6.5% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 69%
Response Time: 20 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
LED TV SHARP LC-32CHE4042E with LCD LSC320AN02, diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 300 cd / m² with LED backlighting. Dynamic contrast ratio of 1,000,000: 1 is achieved by controlling the LEDs (LED) depending on the brightness of the plot.The LCD panel uses direct illumination with the rear LEDs (relative to the screen) Direct LED.
You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready).
Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), MKV, JPEG.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, HDMI x3, USB x2. An output for connecting headphones is provided.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
The power consumed by the TV from the network in operating mode is 70 watts.
Overall dimensions: with stand 739x493x179 mm, without stand 739x445x87 mm.
TV Weight: with stand: 6.5 kg, without stand: 4.9 kg.
Attention! The LSC320AN02 panel of the SHARP LC-32CHE4042E LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
