Technical description and composition of the HYUNDAI H-LED24V5 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED24V5
Chassis / Version: 471-01A2-6E701G
Panel: LTM230HT05
T-CON: LTM230HT05S2LV0.3_HF
LED driver (backlight): integrated into PSU
PWM LED driver: MP3389EF (OB3362VP)
MOSFET LED driver: ME15N10-G, SPP9527
Power Supply (PSU): K-L-NM1 465-01A2-21402G
PWM Power: NCP1271, OB5269CP
MOSFET Power: SW8N60
MainBoard: 471-01A2-6E701G 471R1006
IC MainBoard: MST6M16JS-LF, W9412G, YD1517P
Tuner: F21CT-2BK-E
Technical Specifications H-LED24V5
HYUNDAI H-LED24V5
General repair guidelines for TV LCD LED
Possible malfunctions
- HYUNDAI H-LED24V5 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.
With such manifestations, the K-L-NM1 power module usually fails. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (SW8N60) and rectifier diodes in the converters for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits NCP1271, OB5269CP are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
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 health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 471-01A2-6E701G 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Testing or replacing elements MST6M16JS-LF, W9412G, YD1517P requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
If a tuner F21CT-2BK-E is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus on the corresponding tuner pins.
Attention to users! Self-repair of the HYUNDAI H-LED24V5 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
To reduce the backlight current in LED drivers with a PWM controller MP3389EF (MP3389), or its analogue OB3362VP (28 pin), it is necessary to proportionally increase the total resistance of the resistors from pin 9 (ISET) to the chassis. The maximum current in each of the 12 channels (in milliamps) for the resistance Rset (in kilo-ohms) is determined from the ratio 1000 * 1.22V / Rset. With a parallel connection of channels, currents are summed.
The appearance of MainBoard 471-01A2-6E701G is shown in the figure below:471-01A2-6E701G
The appearance of the power supply
Main features of the HYUNDAI H-LED24V5 device:
Installed matrix (LED-panel) LTM230HT05.
The matrix control uses the Timing Controller (T-CON) LTM230HT05S2LV0.3_HF.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PWM controller MP3389EF (OB3362VP). As the power elements of the LED driver, keys of the type ME15N10-G, SPP9527 are used.
The necessary supply voltages for all nodes of the HYUNDAI H-LED24V5 TV are generated by the K-L-NM1 power module or its analogs using NCP1271, OB5269CP microcircuits and power switches of the SW8N60 type.
MainBoard - the main board (motherboard) is a 471-01A2-6E701G module, using microcircuits MST6M16JS-LF, W9412G, YD1517P and others.
The F21CT-2BK-E tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTM230HT05-V
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 509.76x286.74 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: 17S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
HYUNDAI H-LED24V5 TV with LTM230HT05 LCD display, diagonal size 23 "(58 cm) in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED screen technology is implemented in the manufacturing technology of the screen of this TV model.The design and technical capabilities of the TV include watching programs and movies in high quality HD with a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). the input high-frequency or video signal can be processed in analog 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, 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), AV x2, audio x4, S-Video, component, VGA, HDMI x2, USB. An output for connecting headphones is provided. 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.
The power consumed by the TV in the operating mode from the network is 40 watts.
Overall dimensions: without stand 568x418x36 mm.
TV mass: without stand: 4 kg.
Attention! The panel of the LTM230HT05 HYUNDAI H-LED24V5 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.