Technical description and composition of the HYUNDAI H-LED22V14 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED22V14
Chassis / Version: JUG7.820.1287
Panel: ECG215BH-LC7 (RP)
Power Supply (PSU): PW52057
MainBoard: JUG7.820.1287
IC MainBoard: FLASH: Q32-104HIP, CPU: under the radiator.
Tuner: R620D RAFAEL MICRO
Technical Specifications H-LED22V14
HYUNDAI H-LED22V14
General repair guidelines for TV LCD LED
It is advisable to start the repair of the HYUNDAI H-LED22V14 TV with a careful external examination of both internal and external 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. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In cases when the HYUNDAI H-LED22V14 TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up or blink, and there are no sounds and no signs of operability at all, the PW52057 power supply module is most likely faulty or missing processor power on the motherboard (a typical defect of some HYUNDAI TVs). First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If the HYUNDAI H-LED22V14 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the ECG215BH-LC7 (RP) panel is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs are not lit in one line, therefore, they are broken and should be replaced.
A break in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.
Repair or diagnostics of the JUG7.820.1287 motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software) with the replacement of the chip SPI Flash Q32-104HIP. Firmware included.
Attention to users! Self-repair of the HYUNDAI H-LED22V14 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> HYUNDAI H-LED22V14 main: JUG7.820.1287
The appearance of the MainBoard JUG7.820.1287 is shown in the figure below:JUG7.820.1287
JUG7.820.1287 can be used on TVs:
HYUNDAI H-LED22V14 (Panel ECG215BH-LC7 (RP)), HYUNDAI H-LED24V14 (Panel ECG236MB-LC1 (RP)).
The appearance of the power supply
Main features of the HYUNDAI H-LED22V14 device:
Installed matrix (LED-panel) ECG215BH-LC7 (RP).
The formation of the necessary supply voltages for all nodes of the HYUNDAI H-LED22V14 TV is carried out by the PW52057 power module, or its analogues.
MainBoard - the main board (motherboard) is a JUG7.820.1287 module, using the FLASH chips: Q32-104HIP, CPU: under the radiator. and others.
The R620D RAFAEL MICRO tuner provides TV reception and channel tuning.
