Technical description and composition of the HYUNDAI H-LED24V11 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED24V11
Chassis / Version: MST6M182VG-T7S
Panel: LM230WF5 (TL) (D1)
LED driver (backlight): integrated into PSU
PWM LED driver: MP3389EF (OB3362VP)
Power Supply (PSU): K-40L1 (465-01A2-B5269G)
PWM Power: OB5269CP (8)
MainBoard: MST6M182VG-T7S
IC MainBoard: IT6633F-P, TE330C, MP14820S, YD1517P, 25Q32
Tuner: KTDANW-14-09
Technical Specifications H-LED24V11
HYUNDAI H-LED24V11
General repair guidelines for TV LCD LED
Possible malfunctions
- The HYUNDAI H-LED24V11 TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
Typically, with such manifestations, the defect is caused by faulty elements in the K-40L1 main power module. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
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 controllers OB5269CP (8), in the absence of visible damage or frank fault between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
The most likely in these cases is a malfunction of the LED backlight. 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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the MST6M182VG-T7S 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). Board repair and replacement of IT6633F-P, TE330C, MP14820S, YD1517P, 25Q32 microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the tuner tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Once again, remind users! Attempts to self-repair a HYUNDAI H-LED24V11 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 the MainBoard MST6M182VG-T7S is shown in the figure below:MST6M182VG-T7S can be used in TVs:
DAEWOO DSL-24L31E (Panel K236WL), ERISSON 23LEK14 (Panel 1080p Full HD 1920x1080), ERISSON 19LEK14 (Panel M185BGE-L22 Rev.C1), HYUNDAI H-LED22V5 (Panel LM215WF4), HYUNDAI H-LED24V11 (Panel LM230WF5 (TL)(D1) ), ROLSEN RL-17L1002U (Panel LTN173KT02 ), RUBIN RB-19SL1U WH (Panel 19 ").
The appearance of the power supply
Main features of the HYUNDAI H-LED24V11 device:
Installed matrix (LED-panel) LM230WF5 (TL) (D1).
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PWM controller MP3389EF (OB3362VP).
The necessary supply voltages for all nodes of the HYUNDAI H-LED24V11 TV are generated by the K-40L1 power module, or its analogs using OB5269CP microcircuits (8).
MainBoard - the main board (motherboard) is an MST6M182VG-T7S module, using IT6633F-P, TE330C, MP14820S, YD1517P, 25Q32, and others.
The KTDANW-14-09 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LM230WF5-TLD1
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 509.184x286.416 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 strings WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
HYUNDAI H-LED24V11 TV with LM230WF5 LCD display, diagonal size 23 "(58 cm) in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED-panel of this TV has an end LED backlight - Edge LED.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic layout according to the standard 1080p (Full HD). Audio 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 speaker system 5 W (2x2.5 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 x2, audio x4, component, VGA, HDMI x3, USB x2. 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, 1280x1024, 1360x768, 1920x1080.
Overall dimensions: without stand 559x382x39 mm.
TV mass: without stand: 4 kg.
Attention! The panel of the LM230WF5 (TL) (D1) HYUNDAI H-LED24V11 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.
