Technical description and composition of the TOSHIBA 46XV733R TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 46XV733R
Panel: LTA460HJ04 T03
Power Supply (PSU): SRV2210WW
MainBoard: PE0840 A V28A001113B1
IC MainBoard: TPS54310, TPC8116, Z1094DI (AO) (8), TAS5708, D2817R, MM1852 (5), 012GN1H (5-1)
Tuner: ENG37F04KF
Specifications 46XV733
TOSHIBA 46XV733R
General recommendations for repairing TV LCD
It is advisable to start the diagnosis of a malfunction of the TOSHIBA 46XV733R TV, like all others, with an external examination of possible changes, both external and internal elements. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. 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 SRV2210WW power module can be expressed in different ways, for example, the TOSHIBA 46XV733R does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. 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 remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the TOSHIBA 46XV733R does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Diagnostics of the inverter can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the lamp power supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
When diagnosing with disabled protection, special precautions must be observed, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
If the motherboard PE0840A V28A001113B1 is faulty, first of all it is necessary to check all the linear power regulators of its chips and, if necessary, update the software. Sometimes you can check the health of MB only by replacement. In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - TPS54310, TPC8116, Z1094DI (AO) (8), TAS5708, D2817R, MM1852 (5), 012GN1H (5-1) with new or obviously working ones.
The malfunction of the ENG37F04KF tuner is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
Owners and users of the TOSHIBA 46XV733R TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> 32/40/46XV733 main PE0840
Service Manuals with Schematic Diagrams 187 pages of 2010 on models 32XV733, 37XV733, 40XV733, 46XV733
The appearance of MainBoard PE0840 is shown in the figure below:PE0840
PE0840 can be used in TVs:
TOSHIBA 40SL733G (Panel LTA400HF12), TOSHIBA 32SL733R (Panel LTA320HF02 75018259 LCD PANEL LED), TOSHIBA 32XV733 (Panel LC320WUD (SC)(G1)), TOSHIBA 40VL733R (Panel LTA400HF12 T04), TOSHIBA 46XV733R (Panel LTA460HJ04 T03).
Key Features of the TOSHIBA 46XV733R:
Installed matrix (LCD panel) LTA460HJ04 T03.
The necessary supply voltages for all nodes of the TOSHIBA 46XV733R TV are generated by the SRV2210WW power module, or its analogs.
MainBoard - the main board (motherboard) is a PE0840 module, using TPS54310, TPC8116, Z1094DI (AO) (8), TAS5708, D2817R, MM1852 (5), 012GN1H (5-1) and others.
The ENG37F04KF tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HJ04
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 72%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V
TOSHIBA 46XV733 LCD TV with LTA460HJ04 LCD display, 46 "(117 cm) diagonal size in 16: 9 format. 450 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 50,000: 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, 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), audio x2, component, SCART x2, RGB, VGA, HDMI x4, USB x2, Ethernet (RJ-45), Wi-Fi. 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.
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 169 watts.
Overall dimensions: with stand 1108x759x329 mm, without stand 1108x700x93 mm.
TV Weight: with stand: 23.5 kg, without stand: 20.3 kg.
Attention! The TOSHIBA 46XV733 LCD TV panel LTA460HJ04 T03 is the most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!