Technical description and composition of the SHARP LC-40LE810E TV, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-40LE810E LC-40LE810ERU
Panel: LK400D3LWF2Y
Inverter (backlight): integrated into PSU
PWM Inverter: DDA003A, DDA002B
MOSFET Inverter: 2N7002LT1G
Power Supply (PSU): DPS-126CP 1A - RUNTKA685WJQZ
PWM Power: NCP1608BDR2G (PFC), ICE3BS03LJG (PWM 8pin), DDA002C
MOSFET Power: SPA11N60C3 (PFC), 2SK4013, FQPF10N60C
MainBoard: QPWBXF455WJZZ // F455WE03 v1.10
IC MainBoard: CPU: R5F364A6NFB, M16C; NAND Flash: K9F1208UOC;
Tuner: RTUDAA053WJQZ
Technical Specifications LC-40LE810
SHARP LC-40LE810E
General recommendations for repairing TV LCD
Repair of the SHARP LC-40LE810E LC-40LE810ERU TV should begin with a fault diagnosis, which involves a careful inspection of the external and internal elements of the device. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, and there is not the slightest sign of operability - the most likely malfunction is in the power module. When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If the SHARP LC-40LE810E does not have an image, there is sound and the channels switch, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU. It is necessary to take into account that in cases of inverter protection shutdown (in order to be able to diagnose) there is a risk of failure of the inverter power elements and take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Diagnostics and repair of the motherboard QPWBXF455WJZZ // F455WE03 v1.10 usually begins with a test of the performance of the stabilizers and power converters of the module chips. In some cases, a software update is required. In some cases, it is necessary to check or replace (if necessary) the elements of the MainBoard - CPU board: R5F364A6NFB, M16C; NAND Flash: K9F1208UOC; . In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner RTUDAA053WJQZ may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. Sometimes the cause of the inoperability of the tuner may be a software failure.
It is necessary to remember to users that attempts to self-repair a SHARP LC-40LE810E TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
1. Service Manual with Schematic Diagram 76 pages of 2010 LC-40LE810E, LC-46LE810E.
PSU / schematic diagram -------------------> DPS-126CP 1A - SHARP RUNTKA685WJQZ
2. Service Manual with Schematic Diagram 83 pages of 2010 LC-40LE810E, LC-46LE810E, LC-40LX810E, LC-46LX810E.
The appearance of the MainBoard QPWBXF455WJZZ is shown in the figure below:QPWBXF455WJZZ
QPWBXF455WJZZ can be used in TVs:
SHARP LC-40LE814E (Panel LK400D3LWF2Y), SHARP LC-40LE810E LC-40LE810ERU (Panel LK400D3LWF2Y).
PSU Advanced
The DPS-126CP power module is installed on the LC-40LE810E TV using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the NCP1608BDR2G PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes, when the reactance (about 15-30 ohms at a frequency of 50 Hz) determines the charge current. As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the SHARP LC-40LE810E device:
Installed matrix (LCD panel) LK400D3LWF2Y.
To power the backlight, a converter is used, combined with a power supply, controlled by a PWM controller DDA003A, DDA002B. As power elements of the inverter, keys of type 2N7002LT1G are used.
The necessary supply voltages for all nodes of the SHARP LC-40LE810E TV are generated by the DPS-126CP power supply module or its analogs using NCP1608BDR2G (PFC), ICE3BS03LJG (PWM 8pin), DDA002C microchips, and power switches of the type SPA11N60C3 (PFC), 2SKPF013, 2SKPF013.
MainBoard - the main board (motherboard) is a QPWBXF455WJZZ module, using CPU chips: R5F364A6NFB, M16C; NAND Flash: K9F1208UOC; and others.
The tuner RTUDAA053WJQZ provides reception of television programs and tuning to channels.
LED TV SHARP LC-40LE810 with LCD LK400D3LWF2Y, diagonal size 40 "(102 cm) 16: 9 format. This model uses the backlight with the end position of the LEDs (relative to the screen) - Edge 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, MKV, JPEG.
The power of the speaker system is 35 watts (2x10 + 15 watts). 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, RS-232. 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 71 watts.
Overall dimensions: with stand 993x707x275 mm, without stand 993x659x39 mm.
Mass of the TV: 19.5 kg.
Attention! The LK400D3LWF2Y panel of the SHARP LC-40LE810 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.
