Technical description and composition of the TV SHARP LC-55CUG8052E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-55CUG8052E
Chassis / Version: T.MS6488E.U703
Panel: LSC550FN13
LED backlight: RF-AJ550E30-0501S-04 A6
LED driver (backlight): integrated into PSU
PWM LED driver: BD9211F
Power Supply (PSU): PW.188W2.711 PO34F-2-CVTE
MOSFET Power: N-FET TO-220
MainBoard: T.MS6488E.U703
IC MainBoard: NAND: MX30LF4G18AC-TI
Tuner: CDT-9NT372RF-10
Technical Specifications LC-55CUG8052E
SHARP LC-55CUG8052E
General repair guidelines for TV LCD LED
Possible malfunctions
- The SHARP LC-55CUG8052E TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
Failure in such cases should begin to be sought in the PW.188W2.711 power supply circuits. 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 case of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in case 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, 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.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason can sometimes be in the power of the LEDs, but more often in their malfunction (breakdown or break), sometimes in the violation of the contact connections of the LED strips.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the 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, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the T.MS6488E.U703 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). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - NAND: MX30LF4G18AC-TI. Defective components should be replaced.
The malfunction of the tuner CDT-9NT372RF-10 is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
It should be remembered! Attempts to self-repair a TV SHARP LC-55CUG8052E, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of MainBoard T.MS6488E.U703 is shown in the figure below:T.MS6488E.U703
The appearance of the power supply
Main features of the SHARP LC-55CUG8052E device:
Installed matrix (LED-panel) LSC550FN13.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a BD9211F PWM controller.
The necessary supply voltages for all nodes of the SHARP LC-55CUG8052E TV are generated by the PW.188W2.711 power module, or its analogs using power switches of the N-FET TO-220 type.
MainBoard - the main board (motherboard) is a module T.MS6488E.U703, using NAND chips: MX30LF4G18AC-TI and others.
The tuner CDT-9NT372RF-10 provides the reception of television programs and tuning to channels.
LED TV SHARP LC-55CUG8052E with LCD LSC550FN13, diagonal size 54.6 "(139 cm) 16: 9 format. The brightness of the screen is 350 cd / m² 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.In this model, the backlight with the end position of the LEDs (relative to the screen) is used - Edge LED.
You can watch movies in the highest possible quality UHD with a resolution of 3840x2160 pixels in the 4K UHD standard.
The LC-55CUG8052E 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.
Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides 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, HDMI x3, MHL, USB x3, Ethernet (RJ-45), Wi-Fi 802.11ac, WiDi. 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 180 watts.
Overall dimensions: with stand 1242x766x230 mm, without stand 1242x724x84 mm.
Attention! The LSC550FN13 panel of the SHARP LC-55CUG8052E 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.