Technical description and composition of the TOSHIBA 32WL66R TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 32WL66R
Chassis / Version: PE0119
Panel: T315XW01 V.5
Lamp backlight: CCFL
T-CON: T315XW01_V5 Ctrl / T260XW02_v2 Ctrl
Inverter (backlight): 4H.V1448.341 / B2
PWM Inverter: OZ964SN
MOSFET Inverter: P2804BG (3), P5504EDG (3)
Trans Inverter: 4001Q618 137 (GP)
Power Supply (PSU): PE0028 M-1 V28A00000401, V28A0000400
PWM Power: STR-W6765, STK8050E
MainBoard: PE0119
IC MainBoard: CPU: TC90702FG, TMP86FS49AUG; Scaler: FL18538LF
Tuner: ENG37A13GF
Control: IR: PE0031D-3 V28A000006A3
Specifications 32WL66R
TOSHIBA 32WL66R
General recommendations for repairing TV LCD
Possible malfunctions
- The TOSHIBA 32WL66R TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
In such cases, the PE0028 power supply is usually faulty. It is necessary to measure its output voltages and, if they are absent, to check for short-circuit probabilities in the converters, power switches and rectifier diodes.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) STR-W6765, STK8050E, if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a distortion of the currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the PE0119 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Board repair and replacement of CPU chips: TC90702FG, TMP86FS49AUG; Scaler: FL18538LF are manufactured with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all you need to check the voltage of the tuner ENG37A13GF and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Owners and users of the TOSHIBA 32WL66R TV should 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!
Service Manuals with Schematic Diagrams 60 pages 2006 on model 26WL66R, 32WL66R, 37WL66R.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 26WL66E, 26WL66T, 26WL66R, 26WL66A, 32WL66E, 32WL66T, 32WL66R, 32WL66A, 37WL66E, 37WL676T, 37WL66R. PE0117 - PE0216 - PE019
The appearance of MainBoard PE0119 is shown in the figure below:PE0119
PE0119 can be used in TVs:
TOSHIBA 26WL65Rs (Panel T260XW02 V.5 75002324), TOSHIBA 26WL66Zs (Panel T315XW01 V5), TOSHIBA 32WL66R (Panel T315XW01 V.5), TOSHIBA 32WL66Rs (Panel V315XW02 V.1), TOSHIBA 47WL66Rs (Panel V470H1-L02 Rev.C4), TOSHIBA 32WL65R 32WL65Rs (Panel T315XW02 V.1).
The appearance of the power supply
Main features of the TOSHIBA 32WL66R device:
Installed matrix (LCD panel) T315XW01 V.5.
The matrix control uses the Timing Controller (T-CON) T315XW01_V5.
A 4H.V1448.341 inverter is used to power the backlight, controlled by the OZ964SN PWM controller. The transformer 4001Q618 137 (GP) is installed in the inverter converter. As power elements of the inverter, keys of the type P2804BG (3), P5504EDG (3) are used.
The necessary supply voltages for all nodes of the TOSHIBA 32WL66R TV are generated by the PE0028 power supply module or its analogs using STR-W6765, STK8050E microcircuits.
MainBoard - the main board (motherboard) is a PE0119 module using CPU chips: TC90702FG, TMP86FS49AUG; Scaler: FL18538LF and others.
The ENG37A13GF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T315XW01 V5A
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: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 15/5 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: TOSHIBA, Model: 32WL66R.
Short from TV: LCD, 32 ", 1366x768, 720p HD, sound: 20 watts.
The composition includes MainBoard PE0119B, PE0216A-1 V28A0002090 and LCD panel (matrix) V315XW02 V.1.
Power Supply Unit (PSU) PE0117G-2, PE0117G-1 Power Supply.
TOSHIBA 32WL66R LCD TV with V315XW02 LCD, 32 "(81 cm) diagonal size in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 800: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in the standard max 480i, 480p, 576i, 576p, 720p, 1080i.
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 x2, audio x4, S-Video, component x2, VGA, HDMI. 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.
The power consumed by the TV in the operating mode from the network is 153 watts.
Overall dimensions: with stand 794x611x300 mm, without stand 794x559x116 mm.
TV Weight: with stand: 21.5 kg, without stand: 17.6 kg.
Attention! The V315XW02 V.1 panel of the TOSHIBA 32WL66R 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!