Technical description and composition of the TOSHIBA 40RL933RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 40RL933RB
Chassis / Version: PE1070
Panel: LTA400HM22 LJ96-06007A
T-CON: GA_60Hz_FHD_V0.3
LED driver (backlight): SSL400_0E1B
Power Supply (PSU): N150A001L Rev-02 N11-150P1A V71A00022900
PWM Power: A6069H (Standby), L6571, FAN6961
MOSFET Power: K12A50D
MainBoard: PE1070 V28A00140701
IC MainBoard: CPU: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I
Tuner: ENGS7305D5F
Specifications 40RL933
TOSHIBA 40RL933RB
General repair guidelines for TV LCD LED
Possible malfunctions
- The TOSHIBA 40RL933RB does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
With similar manifestations, in some cases, the N150A001L power module is faulty. It is necessary to measure its output supply voltage, and in case of their absence, check the operability of the power switches (K12A50D) of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) A6069H (Standby), L6571, FAN6961, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, it 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 cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - CPU: MSD381USV-V6; DRAM: K4B1G1646; NAND Flash: TC58NVG1S3E; SPI Flash: MX25L1606EM2I which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
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.
Once again, remind users! Attempts to independently repair the TOSHIBA 40RL933RB TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
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 40RL933RB device:
Installed matrix (LED panel) LTA400HM22 LJ96-06007A.
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.
The necessary supply voltages for all nodes of the TOSHIBA 40RL933RB TV are generated by the power module N150A001L or its analogs using A6069H (Standby), L6571, FAN6961 microcircuits and K12A50D type 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
TOSHIBA 40RL933 LED TV with LTA400HM22 LCD, 40 "(102 cm) diagonal 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. V This model uses side illumination from Edge LEDs.The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD).
The 40RL933 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 x3, 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.
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 LTA400HM22 panel of the TOSHIBA 40RL933 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.