Technical description and composition of the TOSHIBA 46ML963RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 46ML963RB
Panel: LTA460HW04
LED backlight: LJ07-00998A
T-CON: 12PSQBC4LV0.0; NBT20800DTK116
LED driver (backlight): SSL460_3E1B Rev: 0.1
PWM LED driver: SSL110SN
Power Supply (PSU): N150A002L V71A00022901
PWM Power: A6069 (7pin), FAN6961 (PFC), L6577B
MainBoard: PE1063 V28A001396A1
IC MainBoard: CPU: MSD388USV-V6, SPI Flash: 25Q64CVSIG;
Tuner: ENGS7305D5F
Control: CT-9040S
Specifications 46ML963
TOSHIBA 46ML963RB
General repair guidelines for TV LCD LED
A malfunction of the power supply is often manifested corny - the TV does not turn on, does not make any sounds, does not light up and does not blink with any indicators. After checking the mains fuse and power elements of the primary power supply circuit, it should also check the absence of a short circuit in the loads of the secondary rectifiers.
The breakdown of the power switch of the pulse converter is often triggered by other elements, for example, in the stabilization or control circuits of this switch, as well as damper elements in its drain and TPI winding.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the display backlight LEDs or the LED driver (power converter for the LTA460HW04 panel backlight assembly).
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - CPU: MSD388USV-V6, SPI Flash: 25Q64CVSIG; . 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 to television channels, the ENGS7305D5F tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Owners and users of the TOSHIBA 46ML963RB TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
The appearance of MainBoard PE1063 is shown in the figure below:PE1063
PE1063 can be used in TVs:
TOSHIBA 32TL963RB (Panel V315H3-LS5 Rev C1 . 75028476), TOSHIBA 40ML933RB (Panel LTA400HV04), TOSHIBA 40ML963RB (Panel LTA400HV04), TOSHIBA 40TL933R (Panel 40 inch), TOSHIBA 40TL933RB (Panel LTA400HV04), TOSHIBA 40TL963RB (Panel LTA400HV04 T01), TOSHIBA 46ML963RB (Panel LTA460HW04), TOSHIBA 32TL933RB (Panel LTA320HW01), TOSHIBA 46ML933RB (Panel LTA460HW04).
PSU Advanced
The 46ML963RB TV is equipped with the N150A002L power module using the PFC (Power Factor Correction) circuitry acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the FAN6961 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.
The appearance of the power supply
Main features of the TOSHIBA 46ML963RB device:
Installed matrix (LED-panel) LTA460HW04.
The matrix control uses the Timing Controller (T-CON) 12PSQBC4LV0.0 ;.
The LED driver SSL460_3E1B is used to power the backlight LEDs, it is controlled by the SSL110SN PWM controller.
The necessary supply voltages for all nodes of the TOSHIBA 46ML963RB TV are generated by the power module N150A002L, or its analogs using microchips A6069 (7pin), FAN6961 (PFC), L6577B.
MainBoard - the main board (motherboard) is a PE1063 module using CPU chips: MSD388USV-V6, SPI Flash: 25Q64CVSIG; and others.
The ENGS7305D5F tuner provides TV reception and channel tuning.
Information from an alternative source:
TOSHIBA 46ML963RB
Panel Type (Matrix): LTA460HW04
Motherboard: V28A001396A1, K4B1G1646G-BCK0, TAS5708, DC-DC AOZ1094Dix8, JH7944, TC58NVG1S3ETA00, DRV602, 4256BWP, RTL8201E, Tuner: ENGS7305D5F,
T-con: 12PSQBC4L0.0, NBT20800DTK116,
LED Driver: SSL460_3E1B Rev: 0.1, SSL110SN, LED Backlights: LJ07-00998A
PSU: V71A00022901, N150A002L Rev: 01
Remote control: CT-9040S
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HW04-001
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: SPVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Display Colors: 1.07B (10-bit)
Frequency: 120Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (4 ch, 10-bit)
Brand: TOSHIBA, Model: 46ML963.
Briefly from the TV: LCD, LED backlight, 46 ", 1920x1080, 1080p Full HD, 3D, DVR, sound: 20W, HDMI: 4, Internet access, Smart TV.
The composition uses MainBoard PE1063 V28A001396A1 and an LCD panel (matrix) LTA460HW04.
Power Supply Unit (PSU) N150A002L V71A00022901 Power Supply.
Technical description
Toshiba 46ML963 LED TV
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 46ML963 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, WMA, 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, component, SCART, RGB, VGA, HDMI x4, USB x2, Ethernet (RJ-45), WiDi. 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-T2 standards.
Attention! The LTA460HW04 panel of the TOSHIBA 46ML963 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
