Technical description and composition of the TV SHARP LC-46LE540RU, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-46LE540RU
Chassis / Version: DUNTK915
Panel: LK460D3LB33C
LED backlight: 2012SSP46A / B E5000 / 6000 REV0 120221
T-CON: DUNTK4593TP DUNTK915; MAXIM9697A, LR388H3, ISL98602IRAAZ
LED driver (backlight): integrated into PSU
PWM LED driver: MAP3222
Power Supply (PSU): 447WJQZ 3PAGC20030A-R RDENCA
PWM Power: VIPER27L, IC401-HS01G, L6599AD
MainBoard: QPWBXF915WJN2
IC MainBoard: CPU: IXD491WJ; DRAM: K4B2G1646C-HCH9; SOUND: STA333BW
Tuner: TDSV-G001D
Technical Specifications LC-46LE540
SHARP LC-46LE540RU
General repair guidelines for TV LCD LED
Possible malfunctions
- The SHARP LC-46LE540RU 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 such manifestations, in some cases, the 447WJQZ power module is faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, it is necessary to check the serviceability of power switches and rectifier diodes for possible breakdown (short circuit).
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually 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) VIPER27L, IC401-HS01G, L6599AD, 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 the remote control. Or for a second, the image may appear immediately after switching on.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to detect a break in the LED line 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 QPWBXF915WJN2 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: IXD491WJ; DRAM: K4B2G1646C-HCH9; SOUND: STA333BW requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
The malfunction of the TDSV-G001D tuner 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.
Attention TV owners! Attempts at self-repair of SHARP LC-46LE540RU are not recommended by the manufacturer and can lead to serious negative consequences!
Service Manual with Schematic Diagram 94 pages 2012 models LC-40LE540E, LC-40LE540EK, LC-40LE540EV, LC-40LE540RU, LC-46LE540E, LC-46LE540EK, LC-46LE540EV, LC-46LE540RU.
Service manual / schematic diagram -----------------------> SHARP LC-46LE540
The appearance of the MainBoard QPWBXF915WJN2 is shown in the figure below:QPWBXF915WJN2
QPWBXF915WJN2 can be used in TVs:
SHARP LC-40LE540RU (Panel LK400D3LB43C), SHARP LC-40LE730RU (Panel LK400D3LB43 R1LK400D3LB43C), SHARP LC-46LE540RU (Panel LK460D3LB33C).
The appearance of the power supply
Main features of the SHARP LC-46LE540RU device:
Installed matrix (LED panel) LK460D3LB33C.
The matrix control uses the Timing Controller (T-CON) DUNTK4593TP.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the MAP3222 PWM controller.
The necessary supply voltages for all nodes of the SHARP LC-46LE540RU TV are generated by the 447WJQZ power supply module or its analogs using VIPER27L, IC401-HS01G, L6599AD microcircuits.
MainBoard - the main board (motherboard) is a QPWBXF915WJN2 module, using CPU chips: IXD491WJ; DRAM: K4B2G1646C-HCH9; SOUND: STA333BW and others.
The TDSV-G001D tuner provides television reception and channel tuning.
LED TV SHARP LC-46LE540 with LCD LK460D3LB33C, diagonal size 46 "(117 cm) 16: 9 format. The brightness of the screen 400 cd / m² is provided by LED (LED) backlight. Contrast, as the ratio of maximum brightness to minimum, is 5000: 1. In this model, the backlight with the end position of the LEDs (relative to the screen) - Edge LED is used.
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-46LE540 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, Xvid, DivX, MKV, JPEG.
The power of the acoustic system of sound 20 W (2x5 + 10 W) provide 3 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, RGB, VGA, HDMI x4, USB x3, 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.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV from the network in operating mode is 98 watts.
Overall dimensions: with stand 1081x705x265 mm, without stand 1081x654x40 mm.
TV Weight: with stand: 19.7 kg, without stand: 16.7 kg.
Attention! The LK460D3LB33C panel of an SHARP LC-46LE540 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.