Technical description and composition of the TOSHIBA 40RL953RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 40RL953RB
Chassis / Version: PE1070
Panel: LTA400HM22
LED backlight: STS400A75_56LED_REV.1
T-CON: GA_60Hz_FHD_V0.3
LED driver (backlight): SSL400_0E1B
PWM LED driver: SSL110SN
MOSFET LED driver: SMN04L20
Power Supply (PSU): N150A002L V71A00022901 N11-150P1A
PWM Power: A6069, FAN6961 (PFC), L6577B
MOSFET Power: 12A50D
MainBoard: PE1070 V28A00140701
IC MainBoard: CPU: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I
Tuner: ENGS7305D5F
Control: IR: V28A00140101 PE1069
Specifications 40RL953
TOSHIBA 40RL953RB
General repair guidelines for TV LCD LED
Possible malfunctions
- The TOSHIBA 40RL953RB TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
With such manifestations, the N150A002L power supply module usually fails. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches (12A50D) and the rectifier diodes of the converters for a short circuit probability.
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, but there is sound and all the other functions of the TV work. The image sometimes for a second appears immediately after turning on and disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. Often the cause of the malfunction is the lack of current in the LED circuit, for example, an open or short circuit, or a violation of the contact connections of the connectors.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the PE1070 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). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - CPU: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I for new or obviously working. In cases where BGA technologies are used, defects are usually localized by the heating method.
If you suspect a malfunction of the ENGS7305D5F tuner, first of all, you need to verify the correctness of the software, as well as the presence of the required voltage levels and the data exchange pulses with the processor via the I2C bus on the corresponding tuner pins.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
FIRMWARE FOR SPI FLASH -----------> TOSHIBA 40RL953RB, Main: PE1070 V28A00140701, Panel: LTA400HM22
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
The appearance of the MainBoard PE1070 is shown in the figure below:PE1070
PE1070 can be used in TVs:
TOSHIBA 23RL933RB (Panel LC230EUE SE A1), TOSHIBA 32RL933RB (Panel LTA320HN03 T03), TOSHIBA 32RL955RB (Panel LTA320HN03 T03), TOSHIBA 40RL955RB (Panel LTA400HM22 T03), TOSHIBA 32RL953RB (Panel LTA320HN03), TOSHIBA 40RL933RB (Panel LTA400HM22 LJ96-06007A).
The appearance of the power supply
Main features of the TOSHIBA 40RL953RB device:
Installed matrix (LED-panel) LTA400HM22.
The matrix control uses the Timing Controller (T-CON) GA_60Hz_FHD_V0.3.
The LED driver SSL400_0E1B is used to power the backlight LEDs, it is controlled by the SSL110SN PWM controller. As power elements of the LED driver, keys of the SMN04L20 type are used.
The necessary supply voltages for all nodes of the TOSHIBA 40RL953RB TV are generated by the N150A002L power supply module or its analogs using A6069, FAN6961 (PFC), L6577B microchips and 12A50D power switches.
MainBoard - the main board (motherboard) is a PE1070 module, using CPU chips: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I and others.
The ENGS7305D5F tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400HM22
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: 350 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit), CIE1931 70%
Response Time: 10 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
Brand: TOSHIBA, Model: 40RL953.
Shortly from the TV: LCD, LED backlight, 40 ", 1920x1080, 1080p Full HD, DVR, sound: 20W, HDMI: 3, Internet access, Smart TV.
The Toshiba official website has firmware (software update) for the models 40RL953RB (6.9.9E.1), 40RL953N (6.9.MD.1), 40RL953B (6.9.MD.1).
The composition uses MainBoard PE1070 V28A00140701 H and an LCD panel (matrix) LTA400HM22.
Power Supply Unit (PSU) V71A00022901 Power Supply.
TOSHIBA 40RL953 LED TV with a 40 "(102 cm) diagonal LCD display in 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 1,000,000: 1 is achieved by special control of the LEDs. In technology This model’s display is manufactured using LED LED backlighting, and the TV’s design and technical capabilities provide for viewing broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the 1080p standard (Full HD).
The 40RL953 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 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, component, SCART, RGB, VGA, HDMI x3, USB, 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.
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 90 watts.
Overall dimensions: with stand 923x612x216 mm, without stand 923x555x57 mm.
TV mass: with stand: 14 kg, without stand: 12.7 kg.
Attention! The TOSHIBA 40RL953 LED TV panel 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.