Technical description and composition of the HYUNDAI H-LED32R402BS2 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED32R402BS2
Chassis / Version: JUC7.820.00188290
Panel: C320X16-E22-B
LED backlight: JL.D32061330-002TS-M LB-C320X17-E65-B-G01-JF1
T-CON: JUC7.820.00199371
LED driver (backlight): integrated into MainBoard
PWM LED driver: SOT23-6
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: 70R900P
MainBoard: JUC7.820.00188290 HLS80JS 2017-7-4
IC MainBoard: CPU: MSD3663LSA-005N, SPI Flash: GD24Q64
Tuner: ST18WM-2K-E & 11670FN11VB
Control: Service Mode: SOURCE 2580
Technical Specifications H-LED32R402BS2
HYUNDAI H-LED32R402BS2
General repair guidelines for TV LCD LED
Possible manifestations of defects
- HYUNDAI H-LED32R402BS2 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
The malfunction in such cases should be sought in the elements of the power source - the network voltage converter (AC / DC), which is located on the MainBoard JUC7.820.00188290 main board. It is necessary to measure its output voltages and, if they are absent, check the power switches (70R900P) and rectifier diodes for the probability of short circuit in the converters.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in 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 at 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 put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM SOT23-6 PWM controllers, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and all other functions work. Sometimes when you turn on the image for a second appears and disappears.
In such cases, the most likely malfunction of the LED backlight elements. The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power (LED-driver).
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the JUC7.820.00188290 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its components SPI Flash: GD24Q64. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
The malfunction of the ST18WM-2K-E tuner is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Owners and users of the HYUNDAI H-LED32R402BS2 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences, which can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> HYUNDAI H-LED32R402BS2, Main: JUC7.820.00188290 HLS80JS 2017-7-4, Panel: C320X16-E22-B
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> MainBoard JUC7.820.00188290
The appearance of the MainBoard JUC7.820.00188290 is shown in the figure below:JUC7.820.00188290
Main features of the HYUNDAI H-LED32R402BS2 device:
Installed matrix (LED-panel) C320X16-E22-B.
The matrix control uses the Timing Controller (T-CON) JUC7.820.00199371.
To power the backlight LEDs, a converter is used, combined with the main board JUC7.820.00188290, controlled by the SOT23-6 PWM controller. As power elements of the LED driver, keys of the TO-252 type are used.
The power module is combined with the MainBoard and is made according to the scheme of a flyback AC / DC voltage converter using PWM SOT23-6 microcircuits and power switches of the type 70R900P.
MainBoard - the main board (motherboard) is a JUC7.820.00188290 module, using CPU chips: MSD3663LSA-005N, SPI Flash: GD24Q64 and others.
The ST18WM-2K-E & 11670FN11VB tuner provides television reception and channel tuning.
HYUNDAI H-LED32R402BS2 TV with C320X16-E22-B LCD, 32 "(81 cm) diagonal of 16: 9 format. The required brightness of the screen is 250 cd / m² by LED backlighting. Contrast as the ratio of maximum brightness to minimum , it is 3500: 1. Direct LED backlighting with direct LEDs is realized on the LCD TV panel. Direct HD images can be viewed in high quality with a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), DivX, MK V, JPEG.
The power of the sound system 10 W (2x5 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, VGA, HDMI x3, USB. An output for connecting headphones is provided.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
Overall dimensions: with stand 731x482x202 mm, without stand 731x435x86 mm.
TV Weight: 3.5 kg.
Attention! The panel C320X16-E22-B of an HYUNDAI H-LED32R402BS2 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.