Technical description and composition of the TOSHIBA 40ML963RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 40ML963RB
Panel: LTA400HV04
LED backlight: 40-LEET LJ64-03501A LJ07-01004A, STS400A64_56LED_rev.2_111111
T-CON: 12PSQBC4LV0.0
LED driver (backlight): SSL400_3E1A Rev0.1
PWM LED driver: SSL110SN (30)
MOSFET LED driver: SMN04L20
Trans LED driver: 0025CDC U0 128V C K
Power Supply (PSU): N150A002L Rev: 01 N11-150P1A V71A00022901
PWM Power: A6069, FAN6961 (PFC), L6577B
MOSFET Power: K12A50D
MainBoard: PE1063 V28A001396A1 E
IC MainBoard: MSB1231-LF, TAS5708, TCV7103AF,
Tuner: ENGS7305D5F SCEB3V
Control: Remote: CT-90405, IR: V28A00140101 PE1069
Specifications 40ML963
TOSHIBA 40ML963RB
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs of the TOSHIBA 40ML963RB, as well as other electronic devices, is recommended to begin with an external inspection of the external and internal elements. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
In the absence of any signs of operability, when the TOSHIBA 40ML963RB does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the power supply module V71A00022901 N150A002L, Rev: 01 N11-150P1A of the TV. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and K12A50D transistors, which are often found in such a breakdown state in such situations.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The A6069 PWM controller chip (7) can also cause a breakdown of the power switch of the converter.
If the TOSHIBA 40ML963RB has no image, the sound is there and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the LTA400HV04 panel, or their power converter - LED driver. 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 LED driver itself, including in the secondary rectifier of the main PSU.
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.
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.
If the motherboard PE1063 V28A001396A1 E is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Board repair and replacement of microchips MSB1231-LF, TAS5708, TCV7103AF are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before changing the tuner ENGS7305D5F SCEB3V, if it is not possible to tune to television channels, make sure that there are supply voltages, including varicap supply (30-33V), which must be measured on the corresponding tuner pins.
Attention to the owners! Attempts to repair the TOSHIBA 40ML963RB TV independently are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> 32/40/46TL933/TL963 main PE1063ZA
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 32/40/46/TL933, 32/40/46/TL936, 32/40/46/TL963, 32/40/46/TL966, 32/40/46/UL975, 23/32/40/RL933, 23/32/40/RL936, 23/32/40/SL970, 32/40/RL953, 42/47/55/VL963, 42/47/55/XL975, 4046ML933 Main PE1080
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
According to the conditions of compliance with modern world standards for household switching power supplies, the N150A002L module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the FAN6961 PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the TOSHIBA 40ML963RB device:
Installed matrix (LED-panel) LTA400HV04.
The matrix control uses the Timing Controller (T-CON) 12PSQBC4LV0.0.
The LED driver SSL400_3E1A is used to power the backlight LEDs, it is controlled by the SSL110SN PWM controller (30). A transformer 0025CDC U0 128V C K is installed in the LED driver converter. Keys of the SMN04L20 type are used as power elements of the LED driver.
The required supply voltages for all nodes of the TOSHIBA 40ML963RB 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 microchips MSB1231-LF, TAS5708, TCV7103AF, and others.
Tuner ENGS7305D5F SCEB3V provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400HV04
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare (Haze 2%)
Brightness: 400 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 70%
Response Time: 8 (Max.) (G to G)
Frequency: 120Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V
TOSHIBA 40ML963 LED TV with LTA400HV04 LCD, 40 "(102 cm) diagonal display 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 40ML963 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, 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.
The power consumed by the TV in the operating mode from the network is 122 watts.
Overall dimensions: with stand 933x613x215 mm, without stand 933x555x56 mm.
TV Weight: with stand: 14.5 kg, without stand: 12.5 kg.
Attention! The LTA400HV04 panel of the TOSHIBA 40ML963 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.