Technical description and composition of the TOSHIBA 32WL58R TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 32WL58R
Panel: LQ315T3LZ21
Inverter (backlight): RDENC2203TPZB (QKITS0129SNE2)
Trans Inverter: Z1284, Z1285
Power Supply (PSU): PD2171A1 (U002A) & PD2173F
PWM Power: STR-W6765
MainBoard: PD2238E (A5A001511010A) G-LJW3002 & PD2235B
Tuner: ENGF9304GF & ENG39A16GF
Control: CT-90241
Specifications 32WL58R
TOSHIBA 32WL58R
General recommendations for repairing TV LCD
Possible malfunctions
- The TOSHIBA 32WL58R TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
With such manifestations, in most cases, the PD2171A1 power module is faulty. It is necessary to measure the secondary output voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch may be PWM (PWM) STR-W6765. It is checked only by replacement with a known good one.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the PD2238E 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).
The malfunction of the ENGF9304GF & ENG39A16GF tuner is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Users and owners of TVs must remember that attempts to repair the TOSHIBA 32WL58R TV independently without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service Manuals with Schematic Diagrams 111 pages per model ------------------> 32WL56R, 32WL56R, 37WL56R, 37WL56R, 27WL56R, 27WL56R, 32WL58R, 32WL58R, 37WL58R, 37WL58R, 42WL58R, 42WL58R, 32WLT58, 37WLT58, 42WLT58
Main features of the TOSHIBA 32WL58R device:
Installed matrix (LCD panel) LQ315T3LZ21.
To power the backlight used inverter RDENC2203TPZB. The transformer Z1284, Z1285 is installed in the inverter converter.
The necessary supply voltages for all nodes of the TOSHIBA 32WL58R TV are generated by the PD2171A1 power module or its analogs using STR-W6765 microcircuits.
MainBoard - the main board (motherboard) is a PD2238E module.
Tuner ENGF9304GF & ENG39A16GF provides the reception of television programs and tuning to channels.
Information from an alternative source:
TOSHIBA 32WL58R
Motherboard: PD2238E (A5A001511010A) G-LJW3002, AV1: PD2235B-1, Tuner: ENGF9304GF & ENG39A16GF, FRONT AV: PD2235B-2, PC HDMI: PD2235B-7, Card Reader: PD2305A (A5A001591010)
Invertor: RDENC2203TPZB (QKITS0129SNE2), Tr-r: Z1284 and Z1285,
PSU: PD2171A1 (U002A), SUB
PSU: PD2173F
Remote control: CT-90241
Additional technical information about the panel:
Brand: SHARP
Model: LQ315T3LZ21
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 23%), Hard coating (2H), Antireflection
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit)
Response Time: 12/12 (Tr / Td)
Frequency: 60Hz
Lamp Type: 18 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 37 pins
Voltage: 5.0V
Brand: TOSHIBA, Model: 32WL58R.
Shortly from the TV: LCD, 32 ", 1366x768, 720p HD, sound: 20W, HDMI connectors: 2.
The composition includes MainBoard PD2238E (A5A001511010A) G-LJW3002 & PD2235B and LCD panel (matrix) LQ315T3LZ21.
Power Supply Unit (PSU) PD2171A1, PD2173F Power Supply.
TOSHIBA 32WL58R LCD TV with LQ315T3LZ21 LCD display, 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 standard Arti 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MPEG4, JPEG.
The power of the acoustic system of sound 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 x2, audio x7, S-Video x2, component x2, VGA, HDMI x2. 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 155 watts.
Overall dimensions: with stand 794x630x300 mm, without stand 794x576x99 mm.
TV Weight: with stand: 21.5 kg, without stand: 17.6 kg.
Attention! The LQ315T3LZ21 panel of the TOSHIBA 32WL58R 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!