Monday, 4 May 2020

REPAIR / SERVICING TV HYUNDAI H-LEDVD24V2

Technical description and composition of the HYUNDAI H-LEDVD24V2 TV, panel type and applicable modules. The composition of the modules.
HYUNDAI LED
Model: H-LEDVD24V2
Panel: M236MWF1 // TC236F101
T-CON: PWB Ver1.2 M236
LED driver (backlight): AYD230354 3BS0013014 Rev 1.0
Power Supply (PSU): adapter 12v
MainBoard: CVMV26L-B-20 MS-1E198407, B011-0014-070E DVD, B.SPDM5D
IC MainBoard: CPU: TSUMV26KE-LF; SPI Flash: 25F40, EEPROM: 24C32, Audio: TDA1517P
Tuner: F21WT-3BAR-E
Technical Specifications H-LEDVD24V2
HYUNDAI H-LEDVD24V2
General repair guidelines for TV LCD LED
Fault diagnosis and repair HYUNDAI H-LEDVD24V2, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. 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 the case when the H-LEDVD24V2 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink lights and does not show any signs of operability, the adapter 12v power supply module is probably faulty in this case. If it is serviceable with such manifestations, it is necessary to check the stabilizer (converter) of the processor power supply on the motherboard. In general, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
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, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but the sound is there and other functions work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the M236MWF1 panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
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.
Repair of the motherboard MS-1E198407, B011-0014-070E DVD, B.SPDM5D should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Once again, remind users! Attempts to self-repair a HYUNDAI H-LEDVD24V2 TV without the appropriate qualifications and experience can lead to its complete non-repairability!




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-LEDVD24V2 device:
Installed matrix (LED panel) M236MWF1 or TC236F101.
The matrix control uses the PWB Timing Controller (T-CON).
The LED driver AYD230354 is used to power the backlight LEDs.
To power all the internal components of the HYUNDAI H-LEDVD24V2 TV, an external adapter 12v source is used.
MainBoard - the main board (motherboard) is a CVMV26L-B-20 module, using CPU chips: TSUMV26KE-LF; SPI Flash: 25F40, EEPROM: 24C32, Audio: TDA1517P and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: IVO
Model: M236MWF1 R0
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
HYUNDAI H-LEDVD24V2 TV with M236MWF1 LCD, 24 "(61 cm) diagonal size of 16: 9 format. The required brightness of the screen is 250 cd / m² LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. The LED screen technology is implemented in the manufacturing technology of the screen of this TV model.The design and technical capabilities of the TV include watching programs and movies in high quality HD with a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). the input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, VideoCD, SVCD, Picture CD, JPEG.
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, component, VGA, 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.
The mass of the TV: 5.45 kg.
Attention! The panel of the M236MWF1 HYUNDAI H-LEDVD24V2 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.