Friday, 3 April 2020

REPAIR / SERVICING TV TOSHIBA 40TL963RB

Technical description and composition of the TOSHIBA 40TL963RB TV, type of panel and applicable modules. The composition of the modules.
TOSHIBA LED
Model: 40TL963RB
Chassis / Version: PE1063
Panel: LTA400HV04 T01
LED backlight: STS400A64_56LED_rev.2_11111 LJ64-03501A
T-CON: 12PSQBC4LV0.0
LED driver (backlight): SSL400_3E1A Rev0.1
Power Supply (PSU): N150A002L REV: 01 N11-150P1A V71A00022901 // V71A00022900 N150A001L
PWM Power: A6069 (7pin), FAN6961 (PFC), L6577B
MOSFET Power: TK12A50D
MainBoard: PE1063 V28A001396A1 C
IC MainBoard: CPU: MSD388USV-V6; DRAM: K4B1G1646G-BCK0; NAND Flash: V-MNF2GB; SPI Flash: MX25L1606EM2I-12G
Tuner: ENGS7305D5F
Control: CT-90405
Specifications 40TL963
TOSHIBA 40TL963RB
General repair guidelines for TV LCD LED
Repair of all electronic devices, including the TOSHIBA 40TL963RB TV, it is advisable to start with an external examination of its external and internal elements. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. 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 indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the power module N150A002L Rev01 V71A00022901 is faulty and needs repair. Sometimes a similar manifestation may occur only in the absence of processor power, which is typical for certain TOSHIBA models. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the TOSHIBA 40TL963RB TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the LTA400HV04 T01 panel is likely. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Repair or diagnostics of the motherboard PE1069 E should begin by checking the stabilizers or power converters of its chips. If necessary, you should update the software (software).
Remember! Attempts by users to repair the TOSHIBA 40TL963RB TV without proper qualifications and necessary experience 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


SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    32/40/46TL933/TL963 main PE1063ZA


 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 40TL963RB device:
Installed matrix (LED-panel) LTA400HV04 T01.
The matrix control uses the Timing Controller (T-CON) 12PSQBC4LV0.0.
The LED driver SSL400_3E1A is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the TOSHIBA 40TL963RB TV are generated by the power module N150A002L, or its analogs using microchips A6069 (7pin), FAN6961 (PFC), L6577B and power switches of the type TK12A50D.
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: 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


 Trademark: TOSHIBA, Model: 40TL963.
Briefly from the TV: LCD, LED backlight, 40 ", 1920x1080, 1080p Full HD, 3D, DVR, sound: 20W, HDMI: 4, Internet access, Smart TV.
The official Toshiba website has firmware (software update) for the models 40TL963RB (6.9.9E.1), 40TL963N (6.9.MD.1), 40TL963G (6.9.MD.1), 40TL963B (6.9.MD.1).
The composition includes MainBoard PE1063 V28A001396A1 C and LCD panel (matrix) LTA400HV04 T01.
Power supply unit (PSU) N150A002L REV: 01 N11-150P1A V71A00022901, or V71A00022900 N150A001L Power Supply.
TOSHIBA 40TL963 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 40TL963 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). 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.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
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 panel of the TOSHIBA 40TL963 LED TV LTA400HV04 T01 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.