Monday 27 April 2020

REPAIR / SERVICING TV HYUNDAI H-LED24V20

Technical description and composition of the HYUNDAI H-LED24V20 TV, panel type and applicable modules. The composition of the modules.
HYUNDAI LED
Model: H-LED24V20
Chassis / Version: CV59L-G
Panel: M236H1-P01
Power Supply (PSU): Adapter 12V
MainBoard: CV59L-G
IC MainBoard: CPU: TSUMV59XU-Z1, Spi Flash: 25Q32BV
Tuner: CDT-3NP5I1-10
Technical Specifications H-LED24V20
HYUNDAI H-LED24V20
General repair guidelines for TV LCD LED
Repair of electronic devices, including the HYUNDAI H-LED24V20 TV, it is advisable to start with an external examination of its external and internal elements. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered terminals of transformers or heating elements are detected, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
If the power supply module malfunctions, external manifestations may be different, for example, the HYUNDAI H-LED24V20 does not turn on at all and there is no indication of the control lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If the HYUNDAI H-LED24V20 does not have an image, but there is sound, the backlight LEDs of the M236H1-P01 panel or their power converter may malfunction. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
Repair or diagnostics of the CV59L-G motherboard should begin by checking the stabilizers or power converters of its chips. If necessary, you should update the software (software).
When repairing an MB board, you need to check its components Cpu: TSUMV59XU-Z1, Spi Flash: 25Q32BV. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
Attention! Users and owners of H-LED24V20 TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.


FIRMWARE FOR SPI FLASH  ----------->   HYUNDAI H-LED24V20, Main: CV59L-G, Panel: M236H1-P01

 The appearance of the MainBoard CV59L-G is shown in the figure below:
The MainBoard CV59L-G uses a multifunctional microprocessor type TSUMV59 with an integrated scaler and an external SPI Flash ROM type 25Q32 (4Mb).
It is advisable to begin repairing the motherboard by checking the + 5V voltage converters and the + 1.2V processor core power, as well as the + 3.3V linear voltage regulators and the 1.8V DDRAM processor internal RAM.
In the case of a working display backlight and the absence of an image, it is necessary to check the power of the panel (depending on the type, + 5V or + 12V), which can be measured directly on the LVDS connector. If, in the presence of all the supply voltages, the TV does not enter the operating mode, does not respond to the Remote Control and control buttons, the SPI Flash software should be updated.
CV59L-G can be used in TVs:
HYUNDAI H-LED19V20 (Panel M185BGE-L10 Rev. C1), HYUNDAI H-LED24V20 (Panel M236H1-P01), HYUNDAI H-LED15V27 (Panel B156XW04 V.5).
Main features of the HYUNDAI H-LED24V20 device:
Installed matrix (LED-panel) M236H1-P01.
To power all the internal components of the HYUNDAI H-LED24V20 TV, an external adapter 12V type source is used.
MainBoard - the main board (motherboard) is a CV59L-G module, using Cpu chips: TSUMV59XU-Z1, Spi Flash: 25Q32BV and others.
The tuner CDT-3NP5I1-10 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: M236H1-P01
Type: a-Si TFT-LCD, CELL
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Transmissivity: 5.25% (with Polarizer)
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
HYUNDAI H-LED24V20 TV with an M236H1-P01 LCD display, 24 "(61 cm) diagonal size in 16: 9 format. The required screen brightness of 200 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 800: 1. The LED panel of this TV has end-face LED illumination - 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 resolution of 1080p (Full HD) standard. Input high 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 sound system 4 W (2x2 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, audio x2, component, VGA, HDMI, 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, 1360x768.
Overall dimensions: 590x380x175 mm.
TV Weight: 3.6 kg.
Attention! The panel of the M236H1-P01 HYUNDAI H-LED24V20 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.