Technical description and composition of the HYUNDAI H-LED39V19 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED39V19
Chassis / Version: MS82L 40-OMS82L-MAB2LG
Panel: LVF39OCMOT E6 V11
LED driver (backlight): integrated into PSU
PWM LED driver: MP3394S
MOSFET LED driver: APM1105N, AOD442
Power Supply (PSU): SHG3206A-101H
PWM Power: LD7750RGR, MC34063A
MainBoard: MS82L 40-OMS82L-MAB2LG
IC MainBoard: CPU: MC82L 40-OMS82L-MAB2LG, FLASH: W25Q32FVSIG
Tuner: XF-3SA-H
Technical Specifications H-LED39V19
HYUNDAI H-LED39V19
General repair guidelines for TV LCD LED
Repair of the HYUNDAI H-LED39V19 TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
Malfunctions of the power module can be expressed in different ways, for example, the HYUNDAI H-LED39V19 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the LVF39OCMOT E6 V11 panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with 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.
On the MC82L 40-OMS82L-MAB2LG motherboard, in case of a malfunction, you should first check the operation of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: MC82L 40-OMS82L-MAB2LG, FLASH: W25Q32FVSIG and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If there is no reception of television channels, but the TV works properly from external devices, first of all it is necessary to check the voltage of the XF-3SA-H tuner varicaps, which is usually within 30-33V, as well as other supply voltages at the tuner terminals.
Remember! Attempts to self-repair by users of the HYUNDAI H-LED39V19 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> HYUNDAI H-LED39V19, Main: MC82L 40-OMS82L-MAB2LG, Panel: LVF39OCMOT E6 V11
In case of failures in the software of SPI FLASH microcircuits made by Winbond, they can for some time restore their working capacity after temperature exposure - heating by a hairdryer of a soldering station or even a lighter. Usually this is enough to read the regular contents of the software. In such cases, the chip must be replaced with a new one.
To reduce the backlight current in LED drivers with the MP3394S (MP3394) controller, increase the resistance of the resistor from pin 6 (ISET) to the chassis. The maximum current in each channel (in milliamperes) for the Rset resistor (in kilo-ohms) is determined from the ratio 790 * 1.23V / (Rset + 0.4).Repair MainBoard
The appearance of the MainBoard MS82L is shown in the figure below:
MS82L
The appearance of the power supply
Main features of the HYUNDAI H-LED39V19 device:
Installed matrix (LED-panel) LVF39OCMOT E6 V11.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the MP3394S PWM controller. As power elements of the LED driver, keys of the type APM1105N, AOD442 are used.
The necessary supply voltages are generated for all nodes of the HYUNDAI H-LED39V19 TV by the SHG3206A-101H power supply module or its analogs using LD7750RGR, MC34063A microcircuits.
MainBoard - the main board (motherboard) is an MS82L module using CPU chips: MC82L 40-OMS82L-MAB2LG, FLASH: W25Q32FVSIG and others.
The XF-3SA-H tuner provides TV reception and channel tuning.
HYUNDAI H-LED39V19 TV with LVF39OCMOT LCD display, diagonal size 39 "(99 cm) in 16: 9 format. The required brightness of the screen is 350 cd / m² LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 3000: 1. The LED panel of this TV has an end LED backlight - Edge LED.The TV design and technical features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD) standard. frequency or video 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 10 W (2x5 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, audio x2, component, VGA. 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: 888x586x226 mm.
TV mass: 12 kg.
Attention! The panel of the LVF39OCMOT E6 V11 HYUNDAI H-LED39V19 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.