Technical description and composition of the TOSHIBA 32ML963RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 32ML963RB
Panel: LTA320HW01 T03
LED backlight: LJ64-03204A 32DOWN LJ07-00929A
T-CON: SD120PBMB4C6LV0.1 LPF11B0
LED driver (backlight): SSL320_3E2B
PWM LED driver: SSL100SN
MOSFET LED driver: STA3250, APM4015P, SF10A400HD
Trans LED driver: KL-040-12628A-KD
Power Supply (PSU): DPS-115EP A
PWM Power: A6069H (7), 1608B (PFC), DDA014 (18)
Mainboard: PE1080
IC MainBoard: CPU: MSD388USV-V6; DRAM: K4B1G1646G-BCK0; SPI Flash: MX25L1606EM2I-12G
Tuner: ENGS7305D5F
Control: CT-90405
Specifications 32ML963
TOSHIBA 32ML963RB
General repair guidelines for TV LCD LED
TOSHIBA 32ML963RB TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
If the 32ML963RB TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some 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.
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 32ML963RB does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the LTA320HW01 T03 panel 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.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
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.
Remember! Attempts by users to repair the TOSHIBA 32ML963RB TV without proper qualifications and the necessary experience can lead to serious negative consequences!
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.
Backlight: SLED_2011SGS32_L_5630_36_H1_REV1.0 & SLED_2011SGS32_R_5630_36_H1_REV1.0
The appearance of the MainBoard PE1080 is shown in the figure below:PE1080
PE1080 can be used in TVs:
TOSHIBA 42VL963R (Panel LC420EUF (PE)(F1)), TOSHIBA 32ML963RB (Panel LTA320HW01 T03), TOSHIBA 47VL963R (Panel LC470EUF PE F1), TOSHIBA 55VL963R (Panel LC550EUF (PE)(F1)).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the DPS-115EP module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the 1608B 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 32ML963RB device:
The matrix (LED panel) LTA320HW01 T03 is installed.
The matrix control uses the Timing Controller (T-CON) SD120PBMB4C6LV0.1.
The LED driver SSL320_3E2B is used to power the backlight LEDs, it is controlled by the SSL100SN PWM controller. A transformer KL-040-12628A-KD is installed in the converter of the LED driver. As the power elements of the LED driver, keys of the type STA3250, APM4015P, SF10A400HD are used.
The necessary supply voltages for all nodes of the TOSHIBA 32ML963RB TV are generated by the DPS-115EP power supply module or its analogs using A6069H (7), 1608B (PFC), DDA014 (18) microcircuits.
MainBoard - the main board (motherboard) is a PE1080 module, using CPU chips: MSD388USV-V6; DRAM: K4B1G1646G-BCK0; SPI Flash: MX25L1606EM2I-12G and others.
The ENGS7305D5F tuner provides TV reception and channel tuning.
Brand: TOSHIBA, Model: 32ML963.
Briefly from the TV: LCD, LED backlight, 32 ", 1920x1080, 1080p Full HD, 3D, DVR, sound: 20W, HDMI: 4, Internet access, Smart TV.
The composition uses MainBoard PE1080 and an LCD panel (matrix) LTA320HW01 T03.
Power Supply Unit (PSU) DPS-115EP A Power Supply.
TOSHIBA 32ML963 LED TV with LTA320HW01 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. This model uses side backlighting 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 32ML963 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.
Attention! The LTA320HW01 T03 panel of the TOSHIBA 32ML963 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.