Technical description and composition of the HYUNDAI H-LED29V15 TV, type of panel and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED29V15
Chassis / Version: 868M
Panel: ECG290MA-LZ1 (RP)
T-CON: V290BJ1-XC01; HX8872-C, CM501, CM601
LED driver (backlight): integrated into PSU
PWM LED driver: BIT3251
MOSFET LED driver: AOD478
Power Supply (PSU): MP022-50 MEGMEET
PWM Power: MDF7N60B
MainBoard: JUG7.820.1221
IC MainBoard: EN25Q32B-104HIP, TPA3110D2
Tuner: DWE-7053DW-PLL3
Technical Specifications H-LED29V15
HYUNDAI H-LED29V15
General repair guidelines for TV LCD LED
Possible malfunctions
- The HYUNDAI H-LED29V15 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.
Most often, with such manifestations, the MP022-50 main power module is found to be faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) MDF7N60B, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- 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 such cases, the most likely malfunction of the LED backlight elements. The reason can be both in the power of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the JUG7.820.1221 motherboard should be started by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - EN25Q32B-104HIP, TPA3110D2 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If you suspect a malfunction of the DWE-7053DW-PLL3 tuner, first of all, you need 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 at the corresponding terminals of the tuner.
Once again, remind users! Attempts to self-repair a HYUNDAI H-LED29V15 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
FLASH HYUNDAI H-LED29V15 868M, Main: JUG7.820.1221, Panel: ECG290MA-LZ1 (RP)
The appearance of the MainBoard JUG7.820.1221 is shown in the figure below:JUG7.820.1221
JUG7.820.1221 can be used on TVs:
AKAI LEA29C16M (Panel ECG290MA-LZ1 (RP)), HYUNDAI H-LED29V15 (Panel ECG290MA-LZ1 (RP)).
Main features of the HYUNDAI H-LED29V15 device:
Installed matrix (LED-panel) ECG290MA-LZ1 (RP).
The matrix control uses the Timing Controller (T-CON) V290BJ1-XC01 ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a BIT3251 PWM controller. As the power elements of the LED driver, keys of the AOD478 type are used.
The necessary supply voltages for all nodes of the HYUNDAI H-LED29V15 TV are generated by the MP022-50 power module or its analogs using MDF7N60B microcircuits.
MainBoard - the main board (motherboard) is a JUG7.820.1221 module, using chips EN25Q32B-104HIP, TPA3110D2 and others.
The tuner DWE-7053DW-PLL3 provides the reception of television programs and tuning to channels.
HYUNDAI H-LED29V15 TV with ECG290MA-LZ1 LCD display, diagonal size 29 "(74 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 2500: 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 of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems . Emah PAL, SECAM, NTSC Image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats:. MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by 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 x2. 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.
The power consumed by the TV in the operating mode from the network is 35 watts.
Overall dimensions: with stand 654x457x165 mm, without stand 654x412x68 mm.
TV Weight: 5 kg.
Attention! The HYUNDAI H-LED29V15 LED TV panel ECG290MA-LZ1 (RP) 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.