Technical description and composition of the TOSHIBA 32RV633DR TV, panel type and applicable modules. The composition of the modules.Toshiba
Model: 32RV633DR
Panel: LTA320HA04
T-CON: 320HAC2LV0.2
Inverter (backlight): SSI320_4UC01
Power Supply (PSU): SRV2169WW TYPE-2 - 68-FB43B - E128280
PWM Power: SSC9500, FA5501AN (PFC), MIP2F2 (Standby)
MainBoard: PE0719 V28A000938A1 / V28A000712A1
IC MainBoard: TAS5705PAPR, PCM1754DBQR, TMP91FW27UG (JZ)
Tuner: ENG37F01KF
Specifications 32RV633DR
TOSHIBA 32RV633DR
General recommendations for repairing TV LCD
It is advisable to start repairing the TOSHIBA 32RV633DR TV with an external examination of all its components, both internal electronic components and external. Inspection is also subject to body elements, control buttons, screen, connectors and cords. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. 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 TOSHIBA 32RV633DR does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a power module malfunction. In this case, the diagnosis and repair of the common power supply should always be started by checking the mains fuse. When it breaks, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the rectifier diode bridge of the network, as well as the large electrolytic filter capacitor of the network rectifier and the key transistor.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If there is no image when you turn on the TOSHIBA 32RV633DR, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Attention to the owners! Attempts to self-repair the TOSHIBA 32RV633DR TV are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba - 32/37/42RV633/635DR Main PE0719 schematic diagram
The appearance of MainBoard PE0719 is shown in the figure below:PE0719
PE0719 can be used in TVs:
TOSHIBA 32AV635DR (Panel LC320WXN (SB)(B1)), TOSHIBA 32RV633DR (Panel LTA320HA04), TOSHIBA 32RV635DR (Panel LTA320HA04), TOSHIBA 42AV633DR (Panel LC420WUN (SB)(B1) 75014116), TOSHIBA 42AV635DR (Panel LC420WUN-SBB1 LC420WUN-SBB1 75014116), TOSHIBA 42RV635D (Panel LC420WUN (SB)(G1)).
PSU Advanced
The 32RV633DR model uses the SRV2169WW power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, it is a boost converter based on the FA5501AN PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the TOSHIBA 32RV633DR device:
Installed matrix (LCD-panel) LTA320HA04.
The matrix control uses the Timing Controller (T-CON) 320HAC2LV0.2.
To power the backlight used inverter SSI320_4UC01.
The necessary supply voltages for all nodes of the TOSHIBA 32RV633DR TV are generated by the SRV2169WW power module or its analogs using SSC9500, FA5501AN (PFC), MIP2F2 (Standby) microcircuits.
MainBoard - the main board (motherboard) is a PE0719 module, using TAS5705PAPR, PCM1754DBQR, TMP91FW27UG (JZ) and others.
The ENG37F01KF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320HA04
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 420 cd / m²
Contrast Ratio: 3600: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 72%
Response Time: 16/9 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
Brand: TOSHIBA, Model: 32RV633DR.
Short from TV: LCD, 32 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 3.
For the 32RV633D model, the official website has firmware (software update) version 2.1.77.2.
The composition uses MainBoard PE0719 V28A000938A1 / V28A000712A1 and an LCD panel (matrix) LTA320HA04.
Power Supply Unit (PSU) SRV2169WW TYPE-2 - 68-FB43B - E128280 Power Supply.
TOSHIBA 32RV633DR LCD TV with 32 "(81 cm) diagonal LCD display in 32: 9 format. LCD screen brightness of 450 cd / m² is provided by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 1300: 1 Dynamic contrast ratio of 50,000: 1 is achieved by special control of the backlight operation.The design and technical capabilities of the TV provide for watching broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: 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, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3, USB, RS-232. 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 96 watts.
Overall dimensions: with stand 790x570x260 mm, without stand 790x520x90 mm.
TV mass: 15.5 kg.
Attention! The TOSHIBA 32RV633DR LCD TV panel LTA320HA04 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
