Technical description and composition of the TOSHIBA 46ML933RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 46ML933RB
Chassis / Version: PE1063
Panel: LTA460HW04
LED backlight: SLED 2012SGS46 7030L 64 REV1.0
T-CON: 12PSQBC4LV0.0
LED driver (backlight): SSL460_3E1B REV: 0.1
PWM LED driver: SSL110SN
Power Supply (PSU): N150A002L Rev: 01 V71A00022901
PWM Power: A6069, FAN6961 (PFC), L6577B
MOSFET Power: K12A50D
MainBoard: PE1063 V28A001396A1
IC MainBoard: CPU: MSD388USV-V6, DRAM: K4B1G1646G-BCK0, NAND Flash: V-MNF2GB, SPI Flash: MX25L1606EM2I-12G
Tuner: ENGS7305D5F
Specifications 46ML933
TOSHIBA 46ML933RB
General repair guidelines for TV LCD LED
Possible malfunctions
- The TOSHIBA 46ML933RB TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
With similar manifestations, in some cases, the N150A002L power module is faulty. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (K12A50D) and the rectifier diodes of the converters for possible short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM) A6069, FAN6961 (PFC), L6577B, if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- 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.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the PE1063 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: MSD388USV-V6, DRAM: K4B1G1646G-BCK0, NAND Flash: V-MNF2GB, SPI Flash: MX25L1606EM2I-12G 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.
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.
Attention TV owners! Attempts at self-repair of TOSHIBA 46ML933RB are not recommended by the manufacturer and can lead to serious negative consequences!
Service Manuals with Schematic Diagrams 134 pages 2012 on model --------> 32TL933, 40TL933, 46TL933, 32TL936, 40TL936, 46TL936, 32TL963, 40TL963, 46TL963, 32TL966, 40TL966, 46TL966, 32UL975, 40UL975, 46UL975, 23RL933, 32RL933, 40RL933, 23RL936, 32RL936, 40RL936, 23SL970, 32SL970, 40SL970, 32RL953, 40RL953, 42VL963, 47VL963, 55VL963, 42XL975, 47XL975, 55XL975, 40ML933, 46ML933
Repair MainBoard
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).
The appearance of the power supply
Main features of the TOSHIBA 46ML933RB 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 46ML933RB TV are generated by the N150A002L power module, or its analogs using A6069, FAN6961 (PFC), L6577B microchips and K12A50D type power switches.
MainBoard - the main board (motherboard) is a PE1063 module, using CPU chips: MSD388USV-V6, DRAM: K4B1G1646G-BCK0, NAND Flash: V-MNF2GB, SPI Flash: MX25L1606EM2I-12G and others.
The ENGS7305D5F tuner provides TV reception and channel tuning.
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)
Trademark: TOSHIBA, Model: 46ML933.
Briefly from the TV: LCD, LED backlight, 46 ", 1920x1080, 1080p Full HD, 3D, DVR, sound: 20W, HDMI: 2, Internet access, Smart TV.
The composition uses MainBoard PE1063 V28A001396A1 and an LCD panel (matrix) LTA460HW04.
Power Supply Unit (PSU) N150A002L Rev: 01 V71A00022901 Power Supply.
TOSHIBA 46ML933 LED TV with LTA460HW04 LCD display, 46 "(117 cm) diagonal size in 16: 9 format. The required screen brightness of 400 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 1,000,000: 1 is achieved by special control of the LEDs. V This model uses side lighting from Edge LEDs.
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 46ML933 is equipped with SMART software, embedded 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, MKV, JPEG.
The power of the acoustic system of sound 20 W (2x10 W) provide 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, VGA, HDMI x2, USB, 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 standards.
Overall dimensions: with stand 1056x687x235 mm, without stand 1056x630x37 mm.
TV Weight: 18.5 kg.
Attention! The LTA460HW04 panel of the TOSHIBA 46ML933 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.