Technical description and composition of the TOSHIBA 42CV500PR TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 42CV500PR
Panel: LC420WXN-SAB1 75011173
T-CON: 75013100
Inverter (backlight): 75013089
Power Supply (PSU): PE0546B
Mainboard: PE0532
IC MainBoard: FLI32652H, CXB1444R, STA333W, 0747EFI T5CB5-6UK1 F1789ZAE
Tuner: ENG37E11GF
Specifications 42CV500
TOSHIBA 42CV500PR
General recommendations for repairing TV LCD
Repair of the TOSHIBA 42CV500PR TV is best started with a thorough external inspection and diagnosis of the malfunction. It is advisable to carefully examine the internal and external components. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the PE0546B power supply module fails, the external manifestations may be different, for example, the TOSHIBA 42CV500PR does not turn on at all and there is no indication of the indicator lights on the front panel. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the likelihood of an avalanche or thermal breakdown.
It should be borne in mind that in the repair practice it is extremely rare that key transistors of the N-FET type fail for no reason that should be looked for by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, either dried electrolytic capacitors or dangling resistors of the primary circuit of the PSU, involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If an active Power Factor Corrector (PFC) is used in the power module circuitry, it is sometimes more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
If the TOSHIBA 42CV500PR TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
Repair of the inverter 75013089 is complicated by the fact that in case of any malfunction or emergency, even if the lamps are unevenly worn, a protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
It should be remembered that when the protection is turned off, there is always a risk of failure of the power elements of the inverter during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Repair or diagnostics of the PE0532 motherboard should be started by checking the power conditioners. If necessary, you should update the software (software).
Attention to users! Independent repair of the TOSHIBA 42CV500PR TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba Toshiba 42CV500P - PE0532, PE0533, PE0534, PE0546, PE0560. Service manual and schematic diagram
1. Service Manuals with Schematic Diagrams 176 pages on models 32CV504D, 32CV505D, 37CV504D, 37CV505D, 42CV504D, 42CV505D, 32CV500P, 32CV501P, 37CV500P, 37CV501P, 42CV500P, 42CV501P
2. Service Manuals with Schematic Diagrams 172 pages on models 32CV504D, 32CV505D, 37CV504D, 37CV505D, 42CV504D, 42CV505D, 32CV500P, 32CV501P, 37CV500P, 37CV501P, 42CV500P, 42CV501P
The appearance of MainBoard PE0532 is shown in the figure below:PE0532
PE0532 can be used in TVs:
TOSHIBA 32CV500PR (Panel LTA320AA03), TOSHIBA 37CV500PR (Panel LC370WXN-SAC1 75011157), TOSHIBA 42CV500PR (Panel LC420WXN-SAB1 75011173), TOSHIBA 42XV550PR (Panel LC420WUN (SA)(A1)), TOSHIBA 32XV550PR (Panel LTA320HA02), TOSHIBA 32XV500PR (Panel LTA320HA02), TOSHIBA 37XV501PR (Panel LC370WUN (SA)(B1)).
Main features of the TOSHIBA 42CV500PR device:
Installed matrix (LCD panel) LC420WXN-SAB1 75011173.
The matrix control uses the Timing Controller (T-CON) 75013100.
An inverter 75013089 is used to power the backlight.
The formation of the necessary supply voltages for all nodes of the TOSHIBA 42CV500PR TV is carried out by the PE0546B power module, or its analogues.
MainBoard - the main board (motherboard) is a PE0532 module, using chips FLI32652H, CXB1444R, STA333W, 0747EFI T5CB5-6UK1 F1789ZAE and others.
The ENG37E11GF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC420WXN-SAB1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.25x523.01 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1100: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
TOSHIBA 42CV500 LCD TV with LC420WXN-SAB1 LCD, 42 "(106 cm) diagonal display in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Maximum brightness to minimum ratio (contrast) ) is 1100: 1. Dynamic contrast 17000: 1 is achieved by special control of the backlight. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in an analog system ah PAL, SECAM, NTSC. Graphic processing and formation takes place in the digital signal standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
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, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. 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.
Overall dimensions: with stand 1009x689x264 mm, without stand 1009x649x92 mm.
TV Weight: with stand: 23 kg, without stand: 19 kg.
Attention! The TOSHIBA 42CV500 LCD TV panel LC420WXN-SAB1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!