Technical description and composition of the TOSHIBA 39P2300D TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 39P2300D
Chassis / Version: PE1128
Panel: TL390FS31-0
LED backlight: SVT390A12_R_REV1.0_130314, SVT390A12_L_REV1.0_130314
T-CON: V390HJ1-P02
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): V71A00028400 PSLF960401A
MainBoard: PE1128 V28A001473B1
IC MainBoard: RTD2648SG, 25Q128, TPA3110D
Tuner: TDSS-G232D
Specifications 39P2300
TOSHIBA 39P2300D
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The TOSHIBA 39P2300D does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
Usually, with such manifestations, the defect is caused by faulty elements in the main power supply module V71A00028400. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of a short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often 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 (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, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
The most likely in these cases is a malfunction of the LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine the break in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a failure, the zener diode PN junction will either be cut off or broken into short-circuit.
- The indicator on the front panel blinks, the TV does not turn on in 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, TPA3110D 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
Owners of the 39P2300D TV are advised to contact qualified personnel with the necessary work experience for repairs! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
FIRMWARE FOR SPI FLASH -----------> TOSHIBA 39P2300D, Main: PE1128 V28A001473B1, Panel: TL390FS31-0
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
Key Features of the TOSHIBA 39P2300D:
Installed matrix (LED-panel) TL390FS31-0.
The matrix control uses the Timing Controller (T-CON) V390HJ1-P02.
To power the backlight LEDs, a converter is used, combined with the main board PE1128.
The formation of the necessary supply voltages for all nodes of the TOSHIBA 39P2300D 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, TPA3110D and other chips.
The TDSS-G232D tuner provides TV reception and channel tuning.
Trademark: TOSHIBA, Model: 39P2300.
Briefly from the TV: LCD, LED backlight, 39 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 2.
The composition uses MainBoard PE1128 V28A001473B1 and an LCD panel (matrix) TL390FS31-0.
Power Supply Unit (PSU) PSLF960401A V71A00028400 Power Supply.
TOSHIBA 39P2300 LED TV with TL390FS31-0 LCD, 39 "(99 cm) diagonal size 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 Direct LED backlighting is used in the LCD panel.The TV's design and technical capabilities provide for watching broadcasts and films in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). Input high-frequency or video the signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, Xvid, DivX , MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides 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, 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.
Overall dimensions: with stand 889x629x200 mm, without stand 889x565x65 mm.
TV Weight: with stand: 7 kg, without stand: 6.2 kg.
Attention! The TL390FS31-0 panel of a TOSHIBA 39P2300 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.