Monday, 4 May 2020

REPAIR / SERVICING TV HYUNDAI H-LEDVD22V6

Technical description and composition of the HYUNDAI H-LEDVD22V6 TV, panel type and applicable modules. The composition of the modules.
HYUNDAI LED
Model: H-LEDVD22V6
Panel: ECG215B3-L01
MainBoard: MS6M181.7A
IC MainBoard: MST6E181VS-LF-Z1, 25Q32, W9425G5JH-4
Tuner: AFT7 / W130G
Technical Specifications H-LEDVD22V6
HYUNDAI H-LEDVD22V6
General repair guidelines for TV LCD LED
Repair of all electronic devices, including the HYUNDAI H-LEDVD22V6 TV, it is advisable to start with an external examination of its 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. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Malfunctions of the power module can be expressed in different ways, for example, the HYUNDAI H-LEDVD22V6 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
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-LEDVD22V6 has no image, the sound is there and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the ECG215B3-L01 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.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
If the motherboard MS6M181.7A is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements MST6E181VS-LF-Z1, 25Q32, W9425G5JH-4. BGA chip malfunctions are usually easy to detect by warming up.
Before changing the AFT7 / W130G 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 at the corresponding tuner pins.
Attention to the owners! Attempts at self-repair of the HYUNDAI H-LEDVD22V6 TV are not recommended by the manufacturer and can lead to serious negative consequences!



The appearance of the MainBoard MS6M181.7A is shown in the figure below:
MS6M181.7A
MS6M181.7A can be used in TVs:
AKAI LEA-19V07P (Panel M185B3-LC1), AKAI LEA-22V07P (Panel M215HGE-L10 Rev.C1), ERISSON 22LEE01 (Panel CLAA215FA04), ERISSON 16LEE01 (Panel 720p HD 1366x768), FUSION FLTV-D22H11 (Panel LQ215M1LGN2), HYUNDAI H-LED19V13 (Panel CX185LEDM ), HYUNDAI H-LEDVD22V6 (Panel ECG215B3-L01), HYUNDAI H-LED15V7 (Panel N156B6-L0B Rev. C1 / Rev. C2), HYUNDAI H-LEDVD24V10 (Panel M236H3-LA2), RUBIN RB-19S2U (Panel HT185WX1-100), RUBIN RB-22S2UF (Panel LE2360A-V02), RUBIN RB-22S2UFD (Panel 22 "), RUBIN RB-24S2UFD (Panel V236H1-P01), SUPRA STV-LC1944WL (Panel V185B1-LE1 Rev.C1).
Main features of the HYUNDAI H-LEDVD22V6 device:
Installed matrix (LED-panel) ECG215B3-L01.
The required supply voltage for all nodes of the HYUNDAI H-LEDVD22V6 TV is provided by a switching power supply.
MainBoard - the main board (motherboard) is an MS6M181.7A module, using microchips MST6E181VS-LF-Z1, 25Q32, W9425G5JH-4 and others.
The AFT7 / W130G tuner provides TV reception and channel tuning.
Information from an alternative source:
Hyundai H-LEDVD22V6
Panel Type (Matrix): ECG215B3-L01
Motherboard: MS6M181.7A, MST6E181VS-LF-Z1, 25Q32, W9425G5JH-4, Tuner: AFT7 / W130G Schematic,
HYUNDAI H-LEDVD22V6 TV with ECG215B3-L01 LCD display, diagonal size 22 "(56 cm) in 16: 9 format. The required brightness of the screen is 250 cd / m² by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED-panel of this TV has end-face LED illumination - Edge LED.The TV’s design and technical features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). frequency 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, VideoCD, SVCD, Picture CD, 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 40 watts.
Overall dimensions: 536x385x185 mm.
Mass of the TV: 3.3 kg.
Attention! The panel of the ECG215B3-L01 LED-TV HYUNDAI H-LEDVD22V6 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.