Technical description and composition of the TOSHIBA 42ZV635DR TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 42ZV635DR
Chassis / Version: XV635
Panel: LC420WUD (SB) (M2)
T-CON: LC420WUD-SBM2 6870C-3500B
Inverter (backlight): KLS-EE42SCAN18A REV: 0.6 6632L-0532
PWM Inverter: BD9897FS
MOSFET Inverter: 1K48D 6pcs
Power Supply (PSU): 68-AL43A SRV2194WW 065284
PWM Power: MIP2F2 (Standby), R2A20113SP (PFC), SSC9500 (PWM 16pin)
MOSFET Power: K11A55D, K10A50D
MainBoard: PE0693 V28A000966B1
IC MainBoard: TMP91FW27UG, NAND: HY27US08121B, DDR: H5PS5162FFR;
Tuner: ENG37F01KF
Specifications 42ZV635D
TOSHIBA 42ZV635DR
General recommendations for repairing TV LCD
Repair of TVs, as well as other devices, it is advisable to start with an external examination. Based on visible external changes in the state of the components, it is often possible to determine the direction of the troubleshooting before making the necessary measurements. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external signs of certain malfunctions.
A malfunction of the power supply is often manifested corny - the TV does not turn on, does not make any sounds, does not light up and does not blink with any indicators. After checking the mains fuse and power elements of the primary power supply circuit, it should also check the absence of a short circuit in the loads of the secondary rectifiers.
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, PWM controller 20113, MIP2F2, which You can check only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked. If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
If the motherboard PE0693 V28A000966B1 is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement. Board repair and chip replacement TMP91FW27UG, NAND: HY27US08121B, DDR: H5PS5162FFR are carried out with the necessary equipment, and the corresponding hardware base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before replacing the ENG37F01KF tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 42ZV635D PE0621 PE0693 PE0696 PE0697 PE0720 32/37/42/47/55/XV635DR/XV635DR - PE0621, PE0693, PE0696, PE0697, PE0720 Service manual and schematic diagram
Service Manuals with Schematic Diagrams 285 pages of 2009 on models 42ZV625D, 42ZV635D, 47ZV625D, 47ZV635D, 55ZV625D, 55ZV635D.
The appearance of MainBoard PE0693 is shown in the figure below:PE0693
PE0693 can be used in TVs:
TOSHIBA 42ZV635DR (Panel LC420WUD (SB) (M2)), TOSHIBA 32XV635DR (Panel T315HW02 V.5).
PSU Advanced
The 42ZV635DR TV is equipped with a 68-AL43A power module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the PWM controller R2A20113SP does not allow the electrolytic capacitor of the input rectifier filter to be connected directly to the network directly through open diodes, when the value of the charge current determines its reactance (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the TOSHIBA 42ZV635DR device:
Installed matrix (LCD panel) LC420WUD (SB) (M2).
The matrix control uses the Timing Controller (T-CON) LC420WUD-SBM2.
To power the backlight, an inverter KLS-EE42SCAN18A is used, it is controlled by the BD9897FS PWM controller. As power elements of the inverter, keys of the type 1K48D 6pcs are used.
The necessary supply voltages for all nodes of the TOSHIBA 42ZV635DR TV are generated by the 68-AL43A power supply module or its analogs using MIP2F2 (Standby), R2A20113SP (PFC), SSC9500 (PWM 16pin) microcircuits and power switches of the K11A55D, K10A50D type.
MainBoard - the main board (motherboard) is a PE0693 module using TMP91FW27UG chips, NAND: HY27US08121B, DDR: H5PS5162FFR; and others.
The ENG37F01KF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC420WUD-SBM2
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Hard coating (3H), Reflection 2.0% (Max.)
Brightness: 500 cd / m²
Contrast Ratio: 1100: 1
Display Colors: 1.07B (10-bit)
Response Time: 7 (MPRT)
Frequency: 120Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V
TOSHIBA 42ZV635D LCD TV with LC420WUD LCD, 42 "(106 cm) diagonal display in 16: 9 format. Screen brightness of 500 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 100000: 1 is achieved by special operation control The design and technical capabilities of the TV include viewing programs and movies in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. The startup image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3, MPEG4, JPEG.
The power of the sound acoustic system is 20 W (2x10 W). 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, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x4, USB. 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.
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 184 watts.
Overall dimensions: with stand 1058x724x329 mm, without stand 1058x665x94 mm.
TV Weight: with stand: 23 kg, without stand: 19.8 kg.
Attention! The TOSHIBA 42ZV635D's LCD panel LC420WUD (SB) (M2) is the most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!