Technical description and composition of the TOSHIBA 32RV635DR TV, panel type and applicable modules. The composition of the modules.Toshiba
Model: 32RV635DR
Panel: LTA320HA04
T-CON: 320HAC2LV0.2
Inverter (backlight): SSI320_4UC01
Power Supply (PSU): SRV2169WW (68-FB43B)
PWM Power: MIP2F2 (Standby), SSC9500, FA5501 (PFC)
MainBoard: PE0719 (V28A000938A1)
IC MainBoard: TAS5705PAPR, PCM1754DBQR, TMP91FW27UG (JZ)
Tuner: ENG37F01KF
Specifications 32RV635D
TOSHIBA 32RV635DR
General recommendations for repairing TV LCD
Like any other TV, TOSHIBA 32RV635DR repair is advisable to start with an external examination of the visible changes in the external and internal elements. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a hint in the assumptions about the causes and consequences of the malfunction.
In the case when the 32RV635DR does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely the SRV2169WW power supply module is faulty in this case. When diagnosing and repairing the SRV2169WW power supply, it is first necessary to check the fuse, and if it breaks, the power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip Mip2F2, SSC9500, FA5501, which can only be checked by replacing with a new or obviously working one.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If there is no image when you turn on the TOSHIBA 32RV635DR, 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.
Often attempts to repair the inverter are hampered by the fact that the fault diagnosis is complicated by the operation of its protection, which is designed to turn off the inverter in emergency conditions - when the lamps are depressurized, breaks or short circuits in high-voltage connections and other emergency situations. Lock protection to localize the defect is popular among repairmen.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Remember! Attempts by users to repair the TOSHIBA 32RV635DR TV independently without the appropriate qualifications and necessary experience 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 32RV635DR 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 FA5501 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 32RV635DR 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 32RV635DR TV are generated by the SRV2169WW power module or its analogs using MIP2F2 (Standby), SSC9500, FA5501 (PFC) 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: 12.0VTrademark: TOSHIBA, Model: 32RV635D.
Short from TV: LCD, 32 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 4.
For the 32RV635D model, the official website has firmware (software update) version 2.1.77.2.
The composition uses MainBoard PE0719 V28A000938A1 and an LCD panel (matrix) LTA320HA04.
Power Supply Unit (PSU) SRV2169WW (68-FB43B) Power Supply.
TOSHIBA 32RV635D LCD TV with LTA320HA04 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The brightness of the screen is 450 cd / m² by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 50,000: 1 is achieved by special control of operation 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:. 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 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 96 watts.
Overall dimensions: with stand 786x570x258 mm, without stand 786x525x86 mm.
TV Weight: with stand: 15.5 kg, without stand: 12.7 kg.
Attention! The TOSHIBA 32RV635D's 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!