Technical description and composition of the TV SHARP LC-49CUG8052E, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-49CUG8052E
Chassis / Version: T.MS6488E.U703
Panel: C490EQY-SHM1
LED backlight: RF-AJ490E30-1201S-05
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-49CUG8052E
SHARP LC-49CUG8052E
General repair guidelines for TV LCD LED
Possible malfunctions
- The SHARP LC-49CUG8052E 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.
With similar manifestations, in some cases, the PW.188W2.711 power module is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more 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 controllers, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, but there is sound and all the other functions of the TV work. The image sometimes for a second appears immediately after turning on and 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.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- 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 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.
If there is no reception of television channels, but the TV is working properly from external devices, first of all you need to check the voltage of the tuner CDT-9NT372RF-10 and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
It should be remembered! Attempts to self-repair the SHARP LC-49CUG8052E TV, 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-49CUG8052E device:
Installed matrix (LED panel) C490EQY-SHM1.
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-49CUG8052E 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-49CUG8052E with LCD C490EQY-SHM1, diagonal size 48.5 "(123 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 control operation of 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-49CUG8052E 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 140 watts.
Overall dimensions: with stand 1103x683x230 mm, without stand 1103x645x83 mm.
The mass of the TV: 11.9 kg.
Attention! The C490EQY-SHM1 panel of the SHARP LC-49CUG8052E 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.