Technical description and composition of the HYUNDAI H-LED24R403BT2 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED24R403BT2
Chassis / Version: CV512L-U24
Panel: 24inch 1366x768
LED driver (backlight): integrated into MainBoard
PWM LED driver: BIT3367A
MOSFET LED driver: MMBT3904
Power Supply (PSU): integrated into MainBoard
PWM Power: LD5535
MOSFET Power: 70R900P
MainBoard: CV512L-U24 - 11
IC MainBoard: CPU: S2T512, SPI Flash: GD25Q64C, Audio: TDA3118E28
Tuner: CDT-9NT372-RD60 (RDA5160), CDT-9NS13J-RD41 (RDA5815)
Technical Specifications H-LED24R403BT2
HYUNDAI H-LED24R403BT2
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The HYUNDAI H-LED24R403BT2 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
The malfunction in such cases should be sought in the elements of the power source - mains voltage converter (AC / DC), which is located on the MainBoard CV512L-U24 main board. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches (70R900P) of the converters and rectifier diodes for a short circuit probability.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM) LD5535, if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED lines for breaks 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, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the CV512L-U24 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sometimes they require checking or replacing (if necessary) the elements of the MainBoard - CPU: S2T512, SPI Flash: GD25Q64C, Audio: RDA3118E. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before replacing the tuner CDT-9NT372-RD60 (RDA5160), CDT-9NS13J-RD41 (RDA5815), if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention! For users and owners of H-LED24R403BT2 TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> HYUNDAI H-LED24R403BT2 Chassis CV512L-U24
The appearance of the MainBoard CV512L-U24 is shown in the figure below:Cultraview CV512L-U24
Main features of the HYUNDAI H-LED24R403BT2 device:
Installed matrix (LED-panel) 24inch 1366x768.
To power the backlight LEDs, a converter is used, combined with the main board CV512L-U24, controlled by the BIT3367A PWM controller. As power elements of the LED driver, keys of the type MMBT3904 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 LD5535 microcircuits and power switches of the type 70R900P.
MainBoard - the main board (motherboard) is a CV512L-U24 module, using CPU chips: S2T512, SPI Flash: GD25Q64C, Audio: TDA3118E28 and others.
The tuner CDT-9NT372-RD60 (RDA5160), CDT-9NS13J-RD41 (RDA5815) provides the reception of television programs and tuning to channels.
HYUNDAI H-LED24R403BT2 TV with 24inch LCD, 24 "(61 cm) diagonal size in 16: 9 format. The required screen brightness of 220 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 3000: 1. Direct LED backlighting with direct LEDs is realized on the LCD panel of the TV, you can view HD images in high resolution at 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Supported media file formats: MP3, MPEG4, MKV, Jpeg.
The power of the acoustic system of sound 6 W (2x3 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), component, HDMI, USB.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: without stand 515x313x67 mm.
TV mass: without stand: 2.4 kg.
Attention! The 24inch 1366x768 panel of the HYUNDAI H-LED24R403BT2 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.