Technical description and composition of the TV SHARP LC-32CHE6242E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-32CHE6242E
Chassis / Version: TP.MS6308.PB711
Panel: LSC320AN02 HWV325F-01C LC.4LK02G001
LED backlight: CRH-P32KM3535020753U-REV1.0B
T-CON: C320AN02S4LV0.1
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-8
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
MOSFET Power: TO-220
MainBoard: TP.MS6308.PB711
IC MainBoard: NAND: H27U2G8F2CTR, Audio: TPA3110LD2
Tuner: XF-3SDT-H
Control: IR: SPAD_401_Rx
Technical Specifications LC-32CHE6242E
SHARP LC-32CHE6242E
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SHARP LC-32CHE6242E 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.
The malfunction in such cases, first of all, should be sought in the power elements of a switching power supply (IIP) - a network voltage converter (AC / DC), which in this model of TV is combined with the MainBoard TP.MS6308.PB711 main board. It is necessary to measure its output voltages and, if they are absent, check the power switches (TO-220) and rectifier diodes for the probability of short circuit in the converters.
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 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 controllers, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, all other functions of the TV work. When turned on, the image may sometimes appear for a second.
In such cases, the most likely malfunction of the LED backlight elements. The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power (LED driver).
It is impossible to detect a break in the line of LEDs without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). 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 turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the TP.MS6308.PB711 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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements NAND: H27U2G8F2CTR, Audio: TPA3110LD2. BGA chip malfunctions are usually easy to detect by warming up.
If you suspect a malfunction of the XF-3SDT-H tuner, first of all, it is necessary 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.
TV users and owners must remember that attempts to self-repair a SHARP LC-32CHE6242E TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of MainBoard TP.MS6308.PB711 is shown in the figure below:TP.MS6308.PB711
Main features of the SHARP LC-32CHE6242E device:
The matrix (LED panel) LSC320AN02 HWV325F-01C LC.4LK02G001 is installed.
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.MS6308.PB711, controlled by the SO-8 PWM controller. As power elements of the LED driver, keys of the TO-252 type are used.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit with the use of TO-220 type power switches.
MainBoard - the main board (motherboard) is a module TP.MS6308.PB711, using NAND chips: H27U2G8F2CTR, Audio: TPA3110LD2 and others.
The XF-3SDT-H tuner allows you to receive television programs and tune 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-32CHE6242E 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 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).
The LC-32CHE6242E is equipped with SMART software, as well as the ability to work with applications and on the Internet. Connecting to a network can be done via Wi-Fi.
Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system 16 W (2x8 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, VGA, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi, WiDi, Miracast. 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 728x461x168 mm, without stand 728x426x68 mm.
TV Weight: with stand: 4.5 kg, without stand: 4.3 kg.
Attention! The LSC320AN02 HWV325F-01C LC.4LK02G001 panel of the SHARP LC-32CHE6242E 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.