Technical description and composition of the TOSHIBA 32WL68R TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 32WL68R
Chassis / Version: PE0194C
Panel: T315XW02 V.6
T-CON: 06A10-C1 T315XW02 V6 Control Board
LED driver (backlight): 4H.V1448.291-B1
Power Supply (PSU): PE0197 V28A000177A1
PWM Power: STR-Z4567, STR-W6765
MainBoard: PE0194 C V28A000174A1 + PE0203B-1 V28A000266B1
Tuner: ENG39A16GF
Control: IR: PE0203B-2, V28A000266B2
Specifications 32WL68R
TOSHIBA 32WL68R
General repair guidelines for TV LCD LED
Repair of the TOSHIBA 32WL68R TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
Malfunctions of the power supply module V28A 000177 A1 (basic) V28A 000177 A2 can be expressed in different ways, for example, the TOSHIBA 32WL68R 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. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) 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.
If there is no image when you turn on the TOSHIBA 32WL68R, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the T315XW02 panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
If the motherboard V28000266 A1 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Owners and users of the TOSHIBA 32WL68R 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 ------------------> Toshiba 32WL68P. Service manual and schematic diagram
Service Manuals with Schematic Diagrams 194 pages 2006 on models 32WL68P, 32WL68R, 37WL68P, 37WL68R, 42WL68R, 47WL68R, 32WLT68, 37WLT68, 42WLT68.
The appearance of MainBoard PE0194 is shown in the figure below:PE0194
The appearance of the power supply
Main features of the TOSHIBA 32WL68R device:
Installed matrix (LED-panel) T315XW02 V.6.
The matrix control uses the Timing Controller (T-CON) 06A10-C1.
The LED driver 4H.V1448.291-B1 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the TOSHIBA 32WL68R TV are generated by the PE0197 power module or its analogs using the STR-Z4567, STR-W6765 microcircuits.
MainBoard - the main board (motherboard) is a PE0194 module.
The ENG39A16GF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 V6
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6 (G to G)
Frequency: 120Hz (60Hz Input)
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
TOSHIBA 32WL68R LCD TV with T315XW02 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 1000: 1. You can view images in high quality HD at a resolution of 1366x768 pixels in standard for graphic decomposition 720p (HD Ready) The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC.
The power of the sound speaker system 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, RGB. 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: 794x599x298 mm.
Mass of the TV: 20.2 kg.
Attention! The T315XW02 V.6 panel of the TOSHIBA 32WL68R LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!