Technical description and composition of the THOMSON T39ED33HU TV, panel type and modules used. The composition of the modules.THOMSON LED
Model: T39ED33HU
Chassis / Version: 40-MS82S0-MAD2XG
Panel: LVF390CMTME15V2
LED backlight: 40-LB3910-LBA2XG
LED driver (backlight): 40-RL4010-DRG1XG
Power Supply (PSU): 40-E371C4-PWG1XG 08-PE371C4-PW200AA
PWM Power: FAN7930C, FSFR1700XS, VIPER17L
MOSFET Power: K12A50D (PFC)
MainBoard: 40-MS82S0-MAD2XG
IC MainBoard: MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2
Tuner: F35WT-3-E 07-380FI5-NK4G
Control: RC3000M13, IR: 40-3300EU-IRB2XG
Specifications T39ED33HU
THOMSON T39ED33HU
General recommendations for TV LCD LED repair
Possible malfunctions
- The THOMSON T39ED33HU TV does not turn on, does not respond to the remote control and control panel buttons, the indicators do not light up or flash.
Most often, with similar manifestations, the main power module 40-E371C4-PWG1XG is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (K12A50D (PFC)) and rectifier diodes in the converters for a short circuit.
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 FAN7930C, FSFR1700XS, VIPER17L, 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 in good working order.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and immediately disappears
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.
To check the LED strips for breakage 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 the standby mode.
Repair or diagnostics of the 40-MS82S0-MAD2XG 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). When repairing the MB board, you need to check its components MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2. Defective elements should be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
If THOMSON T39ED33HU has no image, but there is sound, often the LVF390CMTME15V2 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 LVF390CMTME15V2 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-MS82S0-MAD2XG 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-MS82S0-MAD2XG with an oscilloscope, as well as synchronizing 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.
Before replacing the F35WT-3-E 07-380FI5-NK4G tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. You also need to make sure that the tuner and processor can exchange data via the I2C bus
Attention to users! Self-repair of the THOMSON T39ED33HU TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> 440-E371C4-PWA1XG Power supply
The appearance of the MainBoard 40-MS82S0-MAD2XG is shown in the figure below:40-MS82S0-MAD2XG
40-MS82S0-MAD2XG can be used in TVs:
ERISSON 23LET70 (Panel LTA230AP01), GOLDSTAR 32A340R (Panel LVW320SSTM E1), GoldStar LT-42A320F (Panel LVF420AUBK), MYSTERY MTV-3225LW (Panel LVM320CSTME13V4), MYSTERY MTV-4019LW (Panel LVF390CMTM E13 V5), MYSTERY MTV-3219LW (Panel LVW320CSTME18 V2), TCL 40D3200 (Panel LTA400HM13 ), TCL 39D3320 39D3320F (Panel LVF390CMTM E13 V2), TCL 39E5000F3D (Panel V390HK1-LS5), THOMSON T39ED33HU (Panel LVF390CMTME15V2), THOMSON T32ED33U (Panel LSC320AN01-C06), THOMSON T32E32U (Panel LVW320SSTT E1).
External view of the power supply
The main features of the THOMSON T39ED33HU device:
Installed matrix (LED panel) LVF390CMTME15V2.
The 40-RL4010-DRG1XG LED driver is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the THOMSON T39ED33HU TV is carried out by the 40-E371C4-PWG1XG power module, or its analogs using FAN7930C, FSFR1700XS, VIPER17L microcircuits and K12A50D (PFC) power switches.
MainBoard - the main board (motherboard) is a 40-MS82S0-MAD2XG module, using microcircuits MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2 and others.
Tuner F35WT-3-E 07-380FI5-NK4G provides reception of television programs and tuning to channels.
LED TV THOMSON T39ED33HU with LCD LVF390CMTME15V2, diagonal size 39 "(99 cm) 16: 9 format. The declared brightness of the screen of 300 cd / m2 is provided by modern LED backlighting. : 1. The LCD panel adopts Direct LED backlighting with backlighting The design and technical capabilities of the TV allow viewing in high quality HD at a resolution of 1920x1080 pixels in graphic resolution in 1080p (Full HD). Input high-frequency or video signal is decoded into analog systems PAL, SECAM, NTSC Formation of digital signal (graphic format) is performed in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported multimedia formats: MP3, JPEG.
Speaker power 16 W (2x8 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), AV x2, audio x4, component, 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, 1280x1024, 1360x768, 1920x1080.
The power consumed by the TV from the network in the operating mode is not more than 70 W.
Dimensions: with stand 964x694x187 mm, without stand 964x642x61 mm.
TV weight: 12.2 kg.
Attention! The LVF390CMTME15V2 panel of the THOMSON T39ED33HU 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.
