Technical description and composition of the TOSHIBA 42VL863R TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 42VL863R
Chassis / Version: PE0993
Panel: LC420EUD (SD) (F2)
LED backlight: 3660L-0374A 42 V6 Edge FHD-1 Rev1.0 1 R / L-Type
T-CON: 6870C-0358A
LED driver (backlight): 3PDGC20002E-R PCLF-D001 V REV1.0 6917L-0044D
PWM LED driver: SW5509, SW1202
MOSFET LED driver: AO B414, SBR6100CT diode
Power Supply (PSU): PA3102-01TS-LF 787902 16010AJ9 REV0.3
PWM Power: A6069H (7), FAN7930 (PFC)
MainBoard: PE0993 A V28A001298A1, NGS7306D
IC MainBoard: TMPM330FYFG, RTL8304, CXD2816, CXD2820R, SiI9381ACNUC, LN8H23, BD8621, 3564, CS48540CQZ, TAS5708,
Tuner: SCEB3AH
Control: CT-90383
Specifications 42VL863
TOSHIBA 42VL863R
General repair guidelines for TV LCD LED
The TOSHIBA 42VL863R TV, like many other electronic devices, it is advisable to start repairing with an inspection of all external and internal elements. Using visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are taken. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
If the TOSHIBA 42VL863R does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a malfunction of the PA3102-01TS-LF 787902 16010AJ9 REV0.3 power supply module. In some cases, only the processor power regulator may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the TOSHIBA 42VL863R has no image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the LC420EUD (SD) panel (F2) is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the rations of their terminals, as well as the reliability of the connections in the connectors and rations of the terminals.
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.
On the motherboard PE0993 A V28A001298A1, NGS7306D, in case of a malfunction, you should first check the operation of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - TMPM330FYFG, RTL8304, CXD2816, CXD2820R, SiI9381ACNUC, LN8H23, BD8621, 3564, CS48540CQZ, TAS5708, and replace the failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If the TV works normally from external devices, but does not tune into television channels, the SCEB3AH tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the power supply of varicaps (30-33V).
Attention! For users and owners of 42VL863R TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 42/47VL863/WL863 Main: PE0993
Schematic Diagrams 101 pages of 2011 on models 42VL863, 47VL863, 42WL863, 46WL863, 55WL863.
The appearance of MainBoard PE0993 is shown in the figure below:PE0993
PE0993 can be used in TVs:
TOSHIBA 42VL863R (Panel LC420EUD (SD)(F2)), TOSHIBA 47VL863R (Panel LC470EUD (SD)(F2)).
PSU Advanced
On the 42VL863R TV, the PA3102-01TS-LF power module is installed 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 FAN7930 PWM controller does not allow the electrolytic capacitor of the input rectifier filter to be connected directly to the network directly through open diodes, when the value of the charge current determines its reactance (about 15-30 ohms at a frequency of 50 Hz). 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.
Key Features of the TOSHIBA 42VL863R:
Installed matrix (LED-panel) LC420EUD (SD) (F2).
The matrix control uses the Timing Controller (T-CON) 6870C-0358A.
The LED driver 3PDGC20002E-R is used to power the backlight LEDs, it is controlled by the PWM controller SW5509, SW1202. As the power elements of the LED driver, keys of the type AO B414, SBR6100CT diode are used.
The necessary supply voltages for all nodes of the TOSHIBA 42VL863R TV are generated by the PA3102-01TS-LF power module or its analogs using A6069H (7), FAN7930 (PFC) microcircuits.
MainBoard - the main board (motherboard) is a PE0993 module, using TMPM330FYFG, RTL8304, CXD2816, CXD2820R, SiI9381ACNUC, LN8H23, BD8621, 3564, CS48540CQZ, TAS5708, and others.
The SCEB3AH tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC420EUD-SDF2
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 10%), Hard coating (2H)
Brightness: 450 cd / m²
Contrast Ratio: 1600: 1
Display Colors: 16.7M / 1.07B (8-bit / 8-bit + Hi-FRC)
Response Time: 5 (G to G); 6 (MPRT)
Frequency: 120Hz + 120Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (4 ch, 8/10-bit), 92 pins
Voltage: 12.0V
42VL863.
Briefly from the TV: LCD, LED backlight, 42 ", 1920x1080, 1080p Full HD, 3D, there is a satellite tuner, sound: 20W, HDMI: 4, Internet access, Smart TV.
The official Toshiba website has firmware (software update) for models 42VL863R (19.4.61.7), 42VL863N (19.4.49.236), 42VL863G (19.4.61.14), 42VL863F (19.4.49.236), 42VL863B (19.4.61.14).
The composition uses MainBoard PE0993 A V28A001298A1 NGS7306D and LCD panel (matrix) LC420EUD (SD) (F2).
Power Supply Unit (PSU) PA3102-01TS-LF Power Supply.
TOSHIBA 42VL863 LED TV with LC420EUD LCD, 42 "(107 cm) diagonal size in 16: 9 format. The required screen brightness of 450 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1600: 1 Dynamic contrast ratio of 7,000,000: 1 is achieved by special control of the LEDs' operation.This model uses side illumination from Edge LEDs.
There is support for 3D images using passive polarization technology. 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 42VL863 is equipped with SMART software, integrated applications and the ability to work on the Internet. Connecting to the Internet 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, MPEG4, Xvid, DivX, 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, audio x2, component, SCART, RGB, VGA, HDMI x4, USB x2, 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, DVB-S2 standards.
Attention! The LC420EUD (SD) (F2) panel of the TOSHIBA 42VL863 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.