Technical description and composition of the HYUNDAI H-LED19V3 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED19V3
Chassis / Version: T.VST26.7A
Panel: MT185GW01 V.1
MainBoard: T.VST26.7A
IC MainBoard: CPU: TSUMV26KE-LF, Flash: 25Q80BVSSIG, Eeprom: FT24C32A
Tuner: TDQ ATF27WT-F
Technical Specifications H-LED19V3
HYUNDAI H-LED19V3
General repair guidelines for TV LCD LED
Fault diagnosis and repair HYUNDAI H-LED19V3, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In the absence of any signs of operability, when the HYUNDAI H-LED19V3 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. 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.
The reasons for the breakdown of the power switch in switching power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If there is no image when you turn on the HYUNDAI H-LED19V3, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the MT185GW01 V.1 panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements Cpu: TSUMV26KE-LF, Flash: 25Q80BVSSIG, Eeprom: FT24C32A requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
Before changing the SQD-605 VER3.2 tuner, if it is not possible to tune to television channels, make sure that there are supply voltages, including varicap power (30-33V), which must be measured on the corresponding tuner pins.
Remember! Attempts to self-repair by users of the HYUNDAI H-LED19V3 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> HYUNDAI H-LED19V3, Main: T.VST26.7A, Panel: MT185GW01 V.1
In cases where there is a malfunction in the SPI FLASH software and a microcircuit manufacturer Winbond is installed, we recommend replacing it with a new one. Sometimes faulty SPI Winbond microcircuits can be restored for a while after being heated by a hairdryer or a lighter, which makes it possible to read the properly installed software.Repair MainBoard
The appearance of MainBoard T.VST26.7A is shown in the figure below:
T.VST26.7A
T.VST26.7A can be used on TVs:
AKAI LEA-19S02P (Panel MT185GW01 V.1), Akai LTA-24S01P (Panel M236H1 L01 Rev.C1), AKAI LTA-22S01P (Panel CLAA216WA01), AKAI LTA-19S01P (Panel M185B1-L02), HYUNDAI H-LED22V1 (Panel CLAA215FA04), HYUNDAI H-LED19V3 (Panel MT185GW01 V.1), IZUMI TLE15H500M (Panel 15 ").
Main features of the HYUNDAI H-LED19V3 device:
The matrix (LED panel) MT185GW01 V.1 is installed.
The required supply voltage for all nodes of the HYUNDAI H-LED19V3 TV provides a switching power supply.
MainBoard - the main board (motherboard) is a T.VST26.7A module, using Cpu: TSUMV26KE-LF, Flash: 25Q80BVSSIG, Eeprom: FT24C32A, and others.
The TDQ ATF27WT-F tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: INNOLUX
Model: MT185GW01 V.1
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 12S3Px2CN WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
HYUNDAI H-LED19V3 TV with MT185GW01 LCD display, 19 "(48 cm) diagonal size 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. LED TV backlighting is implemented in the technology of manufacturing the screen of this TV model. High quality HD images can be viewed at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in log systems PAL, SECAM, NTSC .. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p.
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, audio x2, component, SCART, VGA, HDMI. 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: 461x346x156 mm.
Mass of the TV: 3 kg.
Attention! The panel of the MT185GW01 V.1 LED-TV HYUNDAI H-LED19V3 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.