Technical description and composition of the TOSHIBA 32PB200V1 TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 32PB200V1
Chassis / Version: PE1085
Panel: V320BJ3-XC01
LED driver (backlight): integrated into PSU
Power Supply (PSU): V71A00026700 PSIV610602A
PWM Power: 2S110
MainBoard: V28A001425A1 PE1085
IC MainBoard: SPI Flash: EN25Q16, Nand: W9425G6JH-4, Audio: TPA3110D2
Tuner: TDSS-G221D V86A00017800
Specifications 32PB200
TOSHIBA 32PB200V1
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The TOSHIBA 32PB200V1 TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
In some of these cases, a fault is detected in the V71A00026700 power module. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. 2S110 PWM controllers, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- 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.
In most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the V28A001425A1 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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - SPI Flash: EN25Q16, Nand: W9425G6JH-4, Audio: TPA3110D2 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If the TDSS-G221D V86A00017800 tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
FIRMWARE FOR SPI FLASH -----------> TOSHIBA 32PB200V1, Main: V28A001425A1 PE1085, Panel: V320BJ3-XC01
The appearance of the MainBoard V28A001425A1 is shown in the figure below:V28A001425A1
The appearance of the power supply
Main features of the TOSHIBA 32PB200V1 device:
Installed matrix (LED panel) V320BJ3-XC01.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the TOSHIBA 32PB200V1 TV are generated by the power module V71A00026700, or its analogs using 2S110 microcircuits.
MainBoard - the main board (motherboard) is a V28A001425A1 module, using SPI Flash chips: EN25Q16, Nand: W9425G6JH-4, Audio: TPA3110D2 and others.
Tuner TDSS-G221D V86A00017800 provides the reception of television programs and tuning to channels.
Trademark: TOSHIBA, Model: 32PB200.
Briefly from the TV: LCD, LED backlight, 32 ", 1366x768, 720p HD, sound: 20W, HDMI: 2.
The composition uses MainBoard PE1085 V28A001425A1 and LCD panel (matrix) V320BJ3-XC01.
Power Supply Unit (PSU) PSIV610602A V71A00026700 Power Supply.
TOSHIBA 32PB200 LED TV with V320BJ3-XC01 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 30000: 1 is achieved by special control of the LEDs This model uses side illumination from Edge LEDs. You can 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, NT SC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, 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 x3, component, VGA, HDMI x2, USB. 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.
The power consumed by the TV in the operating mode from the network is 56 watts.
Overall dimensions: with stand 734x546x145 mm, without stand 734x484x65 mm.
TV Weight: with stand: 5 kg, without stand: 4.5 kg.
Attention! The V320BJ3-XC01 panel of the TOSHIBA 32PB200 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
