Technical description and composition of the TV SHARP LC-40CFF5222E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-40CFF5222E
Chassis / Version: TP.MS3463S.PB711
Panel: JE400D3HD1UX
LED backlight: CRH-P40KM35350409543 REV1.1
T-CON: 1P-0149X00-4011 K0075ZP
LED driver (backlight): integrated into MainBoard
PWM LED driver: 8 pin
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: N-FET TO-220
MainBoard: TP.MS3463S.PB711
IC MainBoard: CPU: MSD3463, SPI FLASH: 25Q64
Tuner: CDT-9NT372-RF01 + SAT
Technical Specifications LC-40CFF5222E
SHARP LC-40CFF5222E
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SHARP LC-40CFF5222E 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.
In such cases, the AC / DC voltage converter, which is combined with the main board TP.MS3463S.PB711, is often faulty. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (N-FET TO-220) and rectifier diodes of the converters for possible 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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) PWM SOT23-6, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
In most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. Often the cause is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver is malfunctioning.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
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). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - CPU: MSD3463, SPI FLASH: 25Q64. Defective components should be replaced.
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 tuner CDT-9NT372-RF01 + SAT. 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-40CFF5222E 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.MS3463S.PB711 is shown in the figure below:TP.MS3463S.PB711
Main features of the SHARP LC-40CFF5222E device:
Installed matrix (LED panel) JE400D3HD1UX.
The matrix control uses the Timing Controller (T-CON) 1P-0149X00-4011.
To power the backlight LEDs, a converter is used, combined with the main board TP.MS3463S.PB711, controlled by an 8 pin 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 designed according to a flyback AC / DC voltage converter using PWM SOT23-6 microcircuits and power switches of the N-FET TO-220 type.
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 + SAT provides the reception of television programs and tuning to channels.
LED TV SHARP LC-40CFF5222E with LCD JE400D3HD1UX, diagonal size 39.5 "(100 cm) 16: 9 format. The brightness of the screen 300 cd / m² is provided by LED (LED) backlight. 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.
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 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, HEVC (H.265), MKV, JPEG.
The power of the acoustic system of sound 20 W (2x10 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, HDMI x3, USB x2, Ethernet (RJ-45). 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 JE400D3HD1UX panel of the SHARP LC-40CFF5222E 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.
