Technical description and composition of the THOMSON T24E09DU-01B TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T24E09DU-01B
Chassis / Version: T.SIS231.T65
Panel: V236BJ1-P03 (C1)
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
Power Supply (PSU): CTN1034-L
PWM Power: OB2273 (PWM SOT23-6)
MainBoard: T.SIS231.T65
IC MainBoard: SPI Flash: 25Q64BSIG, NT5CB64M16FP, YD1517P
Tuner: SI2T6Q
Specifications T49D21SF-01B
THOMSON T24E09DU-01B
General recommendations for TV LCD LED repair
Possible manifestations of defects
- THOMSON T24E09DU-01B TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
Usually with similar manifestations, the defect is caused by faulty components in the main power module CTN1034-L. It is necessary to measure its output supply voltages, and if they are absent, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an 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 in the source of the key.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers OB2273 (PWM SOT23-6), in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and disappear immediately.
The most likely problem in these cases is a malfunction of the LED backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine an open circuit 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 you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the zener diode will either be cut off or broken into the K / Z.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the T.SIS231.T65 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - SPI Flash: 25Q64BSIG, NT5CB64M16FP, YD1517P. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
In cases where there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the SI2T6Q tuner outputs match. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.
If THOMSON T49D21SF-01B has no picture, but there is sound, often the display backlight simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image with a successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LCD panel - a process that requires experience and qualifications from the master. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV, light can be seen through the holes in the panel case.
In this case, the panel may also be faulty - damage to the strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within normal limits, it is necessary to trace the passage of LVDS signals from the MainBoard with an oscilloscope, as well as synchronizing signals to the loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
Users and owners of TVs should remember that attempts to self-repair a THOMSON T24E09DU-01B TV without appropriate qualifications and the necessary experience can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> THOMSON T24E09DU-01B, Main: T.SIS231.T65, Panel: V236BJ1-P03 (C1)
The appearance of the MainBoard T.SIS231.T65 is shown in the figure below:T.SIS231.T65
T.SIS231.T65 can be used in TVs:
DNS M24DM8 (Panel M236HGE-L20 ReV.C1), DNS 22AE7000 (Panel CX215LEDM), ERISSON 28LEP91 (Panel st2751a01-1), ROLSEN RL-19E1501T2C (Panel V185BJ1-PE1), RUBIN RB-22SE5FT2C (Panel LM215DA-T01), RUBIN RB-22SE9FT2C (Panel M215HTN01.1), SHIVAKI STV-24LEDGR9 (Panel M236HGE-L20 Rev.C1), SHIVAKI STV-24LEDGW9 (Panel M236H3-LA3), SHIVAKI STV-24LED12 (Panel M236HGE-P01), THOMSON T24E09DU-01B (Panel V236BJ1-P03 (C1)).
External view of the power supply
The main features of the THOMSON T24E09DU-01B device:
Installed matrix (LED-panel) V236BJ1-P03 (C1).
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the OB3350CP PWM controller.
The formation of the necessary supply voltages for all nodes of the THOMSON T24E09DU-01B TV is carried out by the CTN1034-L power module, or its analogs using OB2273 microcircuits (PWM SOT23-6).
MainBoard - the main board (motherboard) is a T.SIS231.T65 module, using SPI Flash chips: 25Q64BSIG, NT5CB64M16FP, YD1517P and others.
The SI2T6Q tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: INNOLUX
Model: V236BJ1-P03
Type: a-Si TFT-LCD, CELL
Diagonal size: 23.6 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 521.471x293.184 mm
Surface: Antiglare (Haze 1%)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 5.8% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
LED TV THOMSON T49D21SF-01B with LCD, diagonal size 49 "(124 cm) 16: 9 format. The declared brightness of the screen of 300 cd / m2 is provided by modern LED backlight LED. The ratio of maximum brightness to minimum (contrast) is not less 4000: 1 LCD panel uses Direct LED backlighting The design and technical capabilities of the TV allow viewing in high quality HD at a resolution of 1920x1080 pixels in graphics resolution in 1080p (Full HD). Supported media formats: MP3 , MPEG4, HEVC (H.265), Xvid, MKV, JPEG.
Speaker power of 10 W (2x5 W) is provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x3, USB x2. A headphone jack is provided. The digital tuner has the ability to receive television channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
Overall dimensions: 1106x701x274 mm.
TV weight: 10.7 kg.
Attention! The panel of the THOMSON T49D21SF-01B LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.
