Technical description and composition of the HYUNDAI H-LED19V1 TV, panel type and applicable modules. The composition of the modules.HYUNDAI LED
Model: H-LED19V1
Chassis / Version: T.VST26.7A
Panel: MT185GW01 V1
MainBoard: MT185GW01V1
IC MainBoard: TSUMV26KE-LF PCB, W25Q80BV, 24C32
Tuner: TDQ-ATF27WT-F
Technical Specifications H-LED19V16
HYUNDAI H-LED19V1
General repair guidelines for TV LCD LED
The HYUNDAI H-LED19V1 TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In cases when the HYUNDAI H-LED19V1 TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up and do not blink, and there are no sounds and no signs of operability at all, the power module is most likely faulty or there is no power processor on the motherboard (a typical defect of some HYUNDAI TVs). In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the HYUNDAI H-LED19V1 has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the circuit of the backlight LEDs of the MT185GW01V1 panel, or their power converter - LED drivers. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
In cases of attempts to repair the motherboard MT185GW01V1, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - TSUMV26KE-LF according to the schematic diagram, W25Q80BV, 24C32 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before replacing the TDQ-ATF27WT-F tuner, if there is no tuning for the channels, you must first check the supply voltage at its terminals, including the power supply of varicaps (30-33V).
Attention! For users and owners of H-LED19V1 TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against 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-LED19V1, Main T.MS6M181.7A 11203, CPU: MST6E181VS-LF-Z1, Panel: MT185GW01 V.4
In case of failures in Winbond's SPI FLASH software, sometimes they can temporarily restore their functionality after temperature exposure, for example, heating with a soldering station or a lighter. Often this is enough to be able to read the regular software content. After that, the chip should be replaced with a new one.
Main features of the HYUNDAI H-LED19V1 device:
Installed matrix (LED panel) MT185GW01 V1.
The required supply voltage for all nodes of the HYUNDAI H-LED19V1 TV provides a switching power supply.
MainBoard - the main board (motherboard) is an MT185GW01V1 module, using TSUMV26KE-LF microcircuits according to the circuit diagram, W25Q80BV, 24C32 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-LED19V16 TV with LM185WH2 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. Edge LED backlighting is realized 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 an analog system . Ah 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 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.
The power consumed by the TV in the operating mode from the network is 36 watts.
Overall dimensions: 463x349x170 mm.
Mass of the TV: 3 kg.
Attention! The panel of the LM185WH2 HYUNDAI H-LED19V16 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.