Technical description and composition of the HYUNDAI H-LED15V8 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED15V8
Chassis / Version: 40-MS82VG-MAD2LG
Panel: N156BGE-L21
T-CON: N156BG-L0A
LED driver (backlight): integrated into T-CON
MainBoard: 40-MS82VG-MAD2LG
IC MainBoard: Flash: W25Q32BV
Tuner: TDQ-3CB
Technical Specifications H-LED15V8
HYUNDAI H-LED15V8
General repair guidelines for TV LCD LED
Fault diagnosis and repair HYUNDAI H-LED15V8, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Sometimes the HYUNDAI H-LED15V8 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
The reasons for the breakdown of the power switch in switching power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If the HYUNDAI H-LED15V8 has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the N156BGE-L21 panel, or their power converter - LED driver. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
The 40-MS82VG-MAD2LG motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - Flash: W25Q32BV and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
Remember! Attempts to self-repair by users of the HYUNDAI H-LED15V8 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> HYUNDAI H-LED15V8, Main: 40-MS82VG-MAD2LG, Panel: N156BGE-L21
In the event of a failure in the software of the SPI FLASH chip from Winbond, we recommend that you replace it with a new one. Sometimes faulty SPI Winbond microcircuits can be restored for a while after a soldering station is heated by a hairdryer. Usually this is enough to read its contents.
Repair MainBoard
The appearance of the MainBoard 40-MS82VG-MAD2LG is shown in the figure below:
40-MS82VG-MAD2LG
Main features of the HYUNDAI H-LED15V8 device:
Installed matrix (LED-panel) N156BGE-L21.
The matrix control uses the Timing Controller (T-CON) N156BG-L0A.
An integrated LED driver is used to power the backlight LEDs.
The required supply voltage for all nodes of the HYUNDAI H-LED15V8 TV provides a switching power supply.
MainBoard - the main board (motherboard) is a 40-MS82VG-MAD2LG module, using Flash chips: W25Q32BV and others.
The TDQ-3CB tuner provides television reception and channel tuning.
In the event of a failure in the software of the SPI FLASH chip from Winbond, we recommend that you replace it with a new one. Sometimes faulty SPI Winbond microcircuits can be restored for a while after a soldering station is heated by a hairdryer. Usually this is enough to read its contents.
Repair MainBoard
The appearance of the MainBoard 40-MS82VG-MAD2LG is shown in the figure below:
40-MS82VG-MAD2LG
Main features of the HYUNDAI H-LED15V8 device:
Installed matrix (LED-panel) N156BGE-L21.
The matrix control uses the Timing Controller (T-CON) N156BG-L0A.
An integrated LED driver is used to power the backlight LEDs.
The required supply voltage for all nodes of the HYUNDAI H-LED15V8 TV provides a switching power supply.
MainBoard - the main board (motherboard) is a 40-MS82VG-MAD2LG module, using Flash chips: W25Q32BV and others.
The TDQ-3CB tuner provides television reception and channel tuning.
HYUNDAI H-LED15V8 TV with N156BGE-L21 LCD, 15 "(38 cm) diagonal size of 16: 9 format. The required screen brightness of 200 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 500: 1. Edge LED backlighting is implemented in the LED-panel of this TV - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in an analog system max PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the speaker system of sound 5 W (2x2.5 W) provide 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 x2, audio x3, component, VGA, HDMI, USB. 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 20 watts.
Overall dimensions: with stand 401x291x105 mm, without stand 401x271x43 mm.
TV Weight: with stand: 2.5 kg, without stand: 1.85 kg.
Attention! The panel N156BGE-L21 of an HYUNDAI H-LED15V8 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.