Technical description and composition of the TOSHIBA 40TL933RB TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 40TL933RB
Panel: LTA400HV04
T-CON: 12PSQBC4LV0.0
LED driver (backlight): SSL400-3E1A Rev0.1
Power Supply (PSU): N150A001L rev02 N11-150P1A V71A00022900
PWM Power: A6069H, FAN6961 (PFC), L6577B
MainBoard: PE1063 V28A001396A1
IC MainBoard: CPU: MSD388USV-V6; DRAM: K4B1G1646G-BCK0; NAND Flash: V-MNF2GB; SPI Flash: MX25L1606EM2I-12G;
Tuner: ENGS7305D5F
Control: CT-90405
Specifications 40TL933
TOSHIBA 40TL933RB
General repair guidelines for TV LCD LED
TOSHIBA 40TL933RB, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Malfunctions of the N150A001L rev02 power module can be expressed in different ways, for example, the TOSHIBA 40TL933RB does not turn on at all and the control lights on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
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.
Sometimes the TOSHIBA 40TL933RB TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the LTA400HV04 panel backlight LED converter, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
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 diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
Repair or diagnostics of the PE1053 motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the varicap tuner ENGS7305D5F, which is usually within 30-33V, as well as other supply voltages at the terminals of the tuner.
We recommend the owners of the 40TL933RB TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
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).
The appearance of the power supply
Main features of the TOSHIBA 40TL933RB 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.
The necessary supply voltages for all nodes of the TOSHIBA 40TL933RB TV are generated by the power module N150A001L, or its analogs using A6069H, FAN6961 (PFC), L6577B microcircuits.
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