Technical description and composition of the THOMSON T32E53DU TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T32E53DU
Chassis / Version: MT10T
Panel: LVW320NEAL CJUW01 V2
LED driver (backlight): 40-RT3210-DRF2XG
PWM LED driver: MAP3204
MOSFET LED driver: TK8P25DA
Power Supply (PSU): 40-E081C5-PWI1XG
PWM Power: OB2273A
MOSFET Power: 13A650
MainBoard: 40-MT10T2-MAB2HG
IC MainBoard: MT5310CDOU, MT5135AE, H5T02G63DFR, MX25L12845EMI-10G, CXD2820R
Tuner: DT21WN
Specifications T32E53DU
THOMSON T32E53DU
General recommendations for TV LCD LED repair
Possible malfunctions
- The THOMSON T32E53DU TV does not turn on, does not respond to the remote control and control panel buttons, does not light or blink indicators.
Usually with similar manifestations, the defect is caused by faulty elements in the main power module 40-E081C5-PWI1XG. It is necessary to measure its output voltages, and in case of their absence (full or partial), the serviceability of the power switches (13A650) of the converters and rectifier diodes should be checked for a possible short circuit.
In the event of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
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. OB2273A PWM controllers, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working.
- 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.
Usually, in such cases, a malfunction is detected in the LED panel backlight nodes. The reason may 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 test the LED strips, in order to open all the transitions of the LEDs, several tens of volts or more are needed; it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED junctions in forward bias, you can sometimes detect the presence of a protective zener diode PN junction by connecting the probes in the opposite direction. If the zener diode is cut off or broken in K / Z, then the LED is faulty and needs to be replaced.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
If THOMSON T32E53DU has no image, but there is sound, often the display backlight LVW320NEAL CJUW01 V2 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 LVW320NEAL 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 you can see light 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 the main board MainBoard 40-MT10T2-MAB2HG often turns out to be faulty, a software failure is also possible.
Then, first of all, it is necessary to check the panel supply voltage, 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 the normal range, it is necessary to trace the passage of LVDS signals from MainBoard 40-MT10T2-MAB2HG with an oscilloscope, as well as synchronization signals to 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.
Repair or diagnostics of the 40-MT10T2-MAB2HG 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). Complicated MB (SSB) repair is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements MT5310CDOU, MT5135AE, H5T02G63DFR, MX25L12845EMI-10G, CXD2820R requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Attention to TV owners! Attempts to repair THOMSON T32E53DU on your own are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> 40-E081C5-PWF1XG Power supply
The appearance of the MainBoard 40-MT10T2-MAB2HG is shown in the figure below:40-MT10T2-MAB2HG
40-MT10T2-MAB2HG can be used in TVs:
MYSTERY MTV-3225LT2 (Panel 720p HD 1366x768), THOMSON T32E53DU (Panel LVW320NEAL CJUW01 V2), THOMSON T40E53DHU (Panel LVF400NE2L SJUW00).
External view of the power supply
The main features of the THOMSON T32E53DU device:
Installed matrix (LED panel) LVW320NEAL CJUW01 V2.
The LED driver 40-RT3210-DRF2XG is used to power the backlight LEDs, it is controlled by the PWM controller MAP3204. TK8P25DA keys are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the THOMSON T32E53DU TV is carried out by the 40-E081C5-PWI1XG power module, or its analogs using OB2273A microcircuits and 13A650 power switches.
MainBoard - the main board (motherboard) is a 40-MT10T2-MAB2HG module, using MT5310CDOU, MT5135AE, H5T02G63DFR, MX25L12845EMI-10G, CXD2820R and others.
The DT21WN tuner provides reception of television programs and tuning to channels.
LED TV THOMSON T32E53DU with LCD LVW320NEAL, diagonal size 32 "(81 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 than 4000 : 1. The LCD panel uses Edge LED backlighting. You can view in high quality HD at a resolution of 1366x768 pixels in 720p standard (HD Ready). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. The digital signal (graphic format) is formed in the 480i, 480p, 576i, 576p, 720p, 1080i standards, and the multimedia formats are supported: MP3, WMA, MPEG4, JPEG.
Speaker power of 10 W (2x5 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), component, SCART, VGA, HDMI x3, USB. A headphone jack is provided. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768. The digital tuner has the ability to receive television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV from the network in the operating mode is not more than 60 W.
Dimensions: with stand 730x494x183 mm, without stand 730x439x60 mm.
TV weight: 8.3 kg.
Attention! The LVW320NEAL CJUW01 V2 panel of the THOMSON T32E53DU 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.