Technical description and composition of the TV SHARP LC-40LE730RU, type of panel and applicable modules. The composition of the modules.SHARP LED
Model: LC-40LE730RU
Chassis / Version: DUNTKF915WE
Panel: LK400D3LB43 R1LK400D3LB43C
LED driver (backlight): integrated into PSU
PWM LED driver: MAP3222
MOSFET LED driver: 72T02GH
Power Supply (PSU): FSP148-3FS01
PWM Power: FAN7930C, STR-A6069H, SSC9522S
MainBoard: QPWBXF915WJN2 DUNTKF915WE17
IC MainBoard: ZR39691HGCG (RH-IXD425WJZZQ), ZR39301BGCG (RH-IXD378WJZZQ), H5P5162GFR, K4B2G1646C-HCH9, 29F1G08ABADA, 25X20BVNIG, STA333BW (STA3338W)
Tuner: TDSV-G081D
Technical Specifications LC-40LE730
SHARP LC-40LE730RU
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SHARP LC-40LE730RU TV does not turn on at all. The control lights do not light or flash. On the remote control and the buttons on the control panel does not respond.
In such cases, the fault should be sought first in the FSP148-3FS01 power supply module. It is then necessary to measure its output voltages and, if they are absent, it is necessary to check the power switches and rectifier diodes of the converters for a short-circuit probability.
During thermal or avalanche breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
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. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power key can be PWM (PWM) FAN7930C, STR-A6069H, SSC9522S. It is checked only by replacement with a known good one.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
As a rule, in such cases there is no display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- 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 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 elements ZR39691HGCG (RH-IXD425WJZZQ), ZR39301BGCG (RH-IXD378WJZZQ), H5P5162GFR, K4B2G1646C-HCH9, 29F1G08ABADA, 25X20BVNIG required professional level repair components (requires STA333WW) and requires STA333WW. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the tuner TDSV-G081D and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
We recommend the owners of the LC-40LE730RU 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!
Service Manual with Schematic Diagram 92 pages 2011 model LC-40LE730E, LC-46LE730E, LC-40LE730RU, LC-46LE730RU.
Service manual / schematic diagram -------------------> SHARP LC-40LE730RU, LC-46LE730RU
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-40LE730RU device:
The matrix (LED panel) LK400D3LB43 R1LK400D3LB43C is installed.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the MAP3222 PWM controller. As power elements of the LED driver, keys of the 72T02GH type are used.
The necessary supply voltages for all nodes of the SHARP LC-40LE730RU TV are generated by the FSP148-3FS01 power module, or its analogs using FAN7930C, STR-A6069H, SSC9522S microcircuits.
MainBoard - the main board (motherboard) is a QPWBXF915WJN2 module, using the following chips: ZR39691HGCG (RH-IXD425WJZZQ), ZR39301BGCG (RH-IXD378WJZZQ), H5P5162GFR, K4B2G1646C-HCH9, 29F1G08ABADA, 25X20BVNIG, STA333BW (STA3338W).
The TDSV-G081D tuner provides TV reception and channel tuning.
LED TV SHARP LC-40LE730 with LCD display LK400D3LB43, diagonal size 40 "(102 cm) in 16: 9 format. The brightness of the screen is 450 cd / m² with LED backlighting. This model uses backlight with end-mounted LEDs (relative to the screen) - Edge LED.
There is support for 3D images with active (shutter) technology for separating the right and left channels.
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-40LE730 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, 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, RS-232, 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 102 watts.
Overall dimensions: with stand 947x630x242 mm, without stand 947x560x40 mm.
TV Weight: with stand: 14.4 kg, without stand: 12.2 kg.
Attention! The LK400D3LB43 R1LK400D3LB43C panel of the SHARP LC-40LE730 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.