Technical description and composition of the LG 49UH610V TV, panel type and modules used. The composition of the modules.
LG LED
Model: 49UH610V
Chassis / Version: UD65S
Panel: LC490DGE (FJ) (M2)
T-CON: 6870C-0584B
LED driver (backlight): integrated into PSU
PWM LED driver: SO-8 StepDown
MOSFET LED driver: TO-252
Power Supply (PSU): EAX66923201 (1.4) LGP49LIU-16CH1
PWM Power: PFC, PWM
MOSFET Power: TO-220, TO252
MainBoard: EAX66943504 (1.0) EBT64272502
IC MainBoard: CPU: LGE6551-DA, EMMC: THGBMBG5D1KBAIL, EEPROM: 24C256
Tuner: TDJN-G301D
Control: IR: YW-F01LD V1.4 EBR80772103, Wi-Fi: TWFM-B006D
49UH610V Specifications
LG 49UH610V
General recommendations for TV LCD LED repair
Possible manifestations of defects
- LG 49UH610V TV does not turn on, does not respond to the remote control and control panel buttons, does not light or blink indicators.
With such manifestations, a malfunction is most likely found in the EAX66923201 power supply module. Its output voltages should be measured and, in their absence, the serviceability of the power switches (TO-220, TO252) and rectifier diodes in the converters should be checked for possible breakdown.
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency mode in a short-circuit mode, and in case of a short circuit in the power elements of the primary circuit, the mains fuse is usually cut off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM) PFC, PWM, if they have no visible damage to the case and an open short circuit between the pins, are usually checked by replacing.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
As a rule, in this case, the backlight of the LED panel is faulty. The reason can sometimes be in the power supply of the LEDs, but more often in their malfunction (breakdown or breakage), sometimes in the violation of the contact connections of the LED strips.
It is impossible to check the line of series-connected LEDs without a special current source, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Usually, Chinese multimeters with 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, and the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or pierced in the K / Z.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the EAX66943504 motherboard should start with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements CPU: LGE6551-DA, EMMC: THGBMBG5D1KBAIL, EEPROM: 24C256 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Before replacing the TDJN-G301D tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
If the LG 49UH610V has no picture, but there is sound, the LC490DGE-FJM2 display backlight often 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 when the ambient light hits the screen successfully.
Replacing the LEDs requires disassembling the LC490DGE-FJM2 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 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 EAX66943504 often turns out to be faulty, a software failure is also possible.
Then, first of all, you need 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 normal limits, it is necessary to trace the passage of LVDS signals from the MainBoard EAX66943504 with an oscilloscope, as well as synchronization 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 the LG 49UH610V TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Chassis: UD65S FOR MODELS 43UH6107, 43UH610V, 43UH619V, 43UH6207, 43UH620V, 49UH6107, 49UH610V, 49UH619V, 49UH6207, 49UH620V -ZA/ZB/ZC.
The appearance of the MainBoard EAX66943504 is shown in the figure below:
EAX66943504
EAX66943504 can be used in TVs:
LG 43UH619V (Panel HC430DGN-SLNXG-211X), LG 49UH603V (Panel LC490DGE (FJ)(M2)), LG 43UH603V (Panel LC430DGE (FJ)(M2)), LG 43UH610V (Panel HC430DGN-SLNX5-5112).
External view of the power supply
Main features of LG 49UH610V device:
Installed matrix (LED panel) LC490DGE (FJ) (M2).
Matrix control uses Timing Controller (T-CON) 6870C-0584B.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the SO-8 StepDown PWM controller. TO-252 switches are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the LG 49UH610V TV is carried out by the EAX66923201 power module, or its analogs using PFC, PWM microcircuits and power switches of the TO-220, TO252 type.
MainBoard - the main board (motherboard) is an EAX66943504 module using CPU chips: LGE6551-DA, EMMC: THGBMBG5D1KBAIL, EEPROM: 24C256 and others.
Tuner TDJN-G301D provides reception of television programs and tuning to channels.
Instructions and updates
There are files to download for the 49UH610V model from the manufacturer:
Files with updates and instructions:
File Description File Name Type Date Size
SW File (Version 05.31.00). Firmware (USB) Software_File (Version_05.31.00) .zip ZIP 10.08.2020 810611K
Compatible with 43UH603V-ZE, 43UH6107-ZB, 43UH6109-ZB, 43UH610V-ZB, 43UH619V-ZC, 43UH6207-ZA, 43UH620V-ZA, 49UH603V-ZE, 49UH6107-ZB, 49UH6109-ZB, 49UH610V-ZB, 49UH619V-ZC, 49UH6207-ZA, 49UH620V-ZA, 55UH605V-ZC, 55UH6157-ZB, 55UH6159-ZB, 55UH615V-ZB, 55UH620V-ZA, 55UH6257-ZA, 55UH625V-ZA, 60UH605V-ZC, 60UH6157-ZB, 60UH615V-ZB, 60UH620V-ZA, 60UH6257-ZA, 60UH625V-ZA, 65UH6157-ZB, 65UH6159-ZB, 65UH615V-ZB, 65UH620V-ZA, 65UH6257-ZA, 65UH625V-ZA.
SW File (Version 05.31.00). Update instructions TV_Software_Update_Guide_v3.pdf PDF 10.08.2020 2014K
SW File (Version 05.30.50). Firmware (USB) Software_File (Version_05.30.50) .zip ZIP 01.02.2019 819656K
User Manuals and Instructions:
Document Language Date Size
Quick Start Guide English - English, Estonian, Latvian, Lettish, Lithuanian, Russian 07/01/2020 59 747K
Quick Start Guide English - English, Estonian, Latvian, Lettish, Lithuanian, Russian 07/01/2020 No data
Quick start instructions English - English 11.27.2017 5034K
The files can be downloaded from the manufacturer's website for the 49UH610V model
LG 49UH610V TV with LCD display LC490DGE-FJM2, diagonal size 49 "(124 cm) 16: 9 format. The LCD-panel implements the principle of direct display backlighting with rear-mounted LEDs - Direct LED.
The LC490DGE-FJM2 sensor and MainBoard EAX66943504 software are capable of realizing the highest UHD quality image at 3840x2160 resolution in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
The 49UH610V TV model has built-in SMART software and webOS operating system installed. The connection to the network can be carried out via Wi-Fi wireless connection. The input analog video signal is decoded in PAL, SECAM, NTSC systems. Graphic processing of a digital signal is carried out in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 20 W (2x10 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
Communication with other devices via an external interface is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x3, USB, Ethernet (RJ-45), Wi-Fi 802.11n, WiDi, Miracast. A headphone jack is provided. A VGA (D-Sub 15) connector is provided to connect a computer or laptop to this TV model. This interface supports standard resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080, 3840x2160. The digital tuner is capable of receiving TV channels in the DVB-T, DVB-T2, DVB-C, DVB-S2 standards.
The TV uses an EAX66923201 power supply.
Dimensions: With stand 1108x707x218 mm, Without stand 1108x657x82 mm.
Attention! The LC490DGE-FJM2 panel of the LG 49UH610V 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.