Technical description and composition of the TOSHIBA 39P2306EV TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 39P2306EV
Chassis / Version: PE1128
Panel: TL390FS2B-0
T-CON: V390HJ1-XC01; CM2801B, CM501
LED driver (backlight): integrated into PSU
Power Supply (PSU): V71A00028400 PSLF960401A
MainBoard: PE1128 V28A001473B1
IC MainBoard: RTD2648SG, 25Q128, TPA3110D2
Tuner: TDSS-G232D
Specifications 39P2306
TOSHIBA 39P2306EV
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The TOSHIBA 39P2306EV TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
In some of these cases, the main switching power supply, the V71A00028400 module, is faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches and rectifier diodes for a probable short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
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 (OOS) stabilization circuits. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
As a rule, in such cases there is no display backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the PE1128 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 cases of attempts to repair the MB board (SSB), it is necessary to check the serviceability of its elements - RTD2648SG, 25Q128, TPA3110D2 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before changing the tuner TDSS-G232D, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention! For users and owners of 39P2306EV TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
FIRMWARE FOR SPI FLASH -----------> TOSHIBA 39P2306EV, Main: PE1128 V28A001473B1, Panel: V390HJ1 - P02
The appearance of MainBoard PE1128 is shown in the figure below:PE1128
PE1128 can be used in TVs:
TOSHIBA 32P2306EV (Panel LC320DXE (SF)(R1)), TOSHIBA 39P2300D (Panel TL390FS31-0), TOSHIBA 39P2306EV (Panel TL390FS2B-0).
The appearance of the power supply
Main features of the TOSHIBA 39P2306EV device:
Installed matrix (LED panel) TL390FS2B-0.
The matrix control uses the Timing Controller (T-CON) V390HJ1-XC01 ;.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the TOSHIBA 39P2306EV TV is carried out by the power supply module V71A00028400, or its analogues.
MainBoard - the main board (motherboard) is a PE1128 module, using RTD2648SG, 25Q128, TPA3110D2 and other chips.
The TDSS-G232D tuner provides TV reception and channel tuning.
Briefly from the TV: LCD, LED backlight, 39 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 2.
TOSHIBA 39P2306 LED TV with a 39 "(99 cm) diagonal LCD display in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 30000: 1 is achieved by special control of the LEDs. In this The models use lateral LED backlighting from Edge LEDs.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). Input high-frequency or video signal may be processed in analog PAL, SECAM system, NTSC Image processing and generation of the digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:.. MP3, JPEG.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, component, VGA, HDMI x2, 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, 1360x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
Overall dimensions: with stand 889x629x200 mm, without stand 889x565x65 mm.
TV Weight: with stand: 7 kg, without stand: 6.2 kg.
Attention! The panel of the TOSHIBA 39P2306 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.
