Technical description and composition of the TV SHARP LC-40CFE6242E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-40CFE6242E
Chassis / Version: TP.MS6308.PB711
Panel: LC.4KS08G001
LED backlight: RF-AJ400E32-0901S-04 A2
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
MainBoard: TP.MS6308.PB711
IC MainBoard: NAND: H27U2G8F2CTR, Audio: TPA3110LD2
Tuner: XF-3SDT-H
Control: IR: SPAD_401_Rx
Technical Specifications LC-40CFE6242E
SHARP LC-40CFE6242E
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SHARP LC-40CFE6242E TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
The malfunction in such cases should be sought in the elements of the power source - the network voltage converter (AC / DC), which is located on the MainBoard TP.MS6308.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 the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
In most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 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.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). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its NAND chips: H27U2G8F2CTR, Audio: TPA3110LD2 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed 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 voltage at the terminals of the XF-3SDT-H 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.
We recommend the owners of the LC-40CFE6242E TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
The appearance of MainBoard TP.MS6308.PB711 is shown in the figure below:TP.MS6308.PB711
Main features of the SHARP LC-40CFE6242E device:
The matrix (LED panel) LC.4KS08G001 is installed.
To power the backlight LEDs, a converter is used, combined with the main board TP.MS6308.PB711.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit.
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.
SHARP LC-40CFE6242E LED TV with LC.4KS08G001 LCD, 40 "(102 cm) diagonal size in 16: 9 format. 280 cd / m² screen brightness is provided by LED backlighting. Dynamic contrast ratio of 1,000,000: 1 is achieved by control operation of LEDs (LED) depending on the brightness of the plot.The LCD panel uses direct illumination with a rear arrangement of LEDs (relative to the screen) Direct LED.
The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD).
The LC-40CFE6242E TV 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. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
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, audio x2, component, SCART, VGA, HDMI x3, USB x2, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n, WiDi, Miracast. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
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 80 watts.
Overall dimensions: with stand 917x569x202 mm, without stand 917x533x67 mm.
TV mass: with stand: 7.6 kg, without stand: 7.3 kg.
Attention! The LC.4KS08G001 panel of the SHARP LC-40CFE6242E 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.
