Technical description and composition of the TV SUPRA STV-LC2214WD, type of panel and applicable modules. The composition of the modules.SUPRA
Model: STV-LC2214WD
Chassis / Version: V2K12
Panel: LTA216AT01
T-CON: 216AT01S2LV0.3
Inverter (backlight): IV0190415
PWM Inverter: TL494C
MOSFET Inverter: ME4542
Trans Inverter: IVTEL 1900033 1036
Power Supply (PSU): AYP160001
PWM Power: PWM SOT23-6
MOSFET Power: 6N60
MainBoard: JUG7.820.699-4
IC MainBoard: CPU: TSUMV26KE-LF, FLASH: 25D40, EEPROM: 24C32
Tuner: TAF6-C2I21VH
Technical Specifications STV-LC2214WD
SUPRA STV-LC2214WD
General repair guidelines for TV LCD
It is advisable to start repairing all electronic devices, including the SUPRA TV, based on the V2K12 chassis, with an external examination of its external and internal elements. From the visible changes in the state of the components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are made. In some cases, faulty elements can be seen with the naked eye, for example, carbonized resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldering of the terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain probability that the power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain SUPRA models. 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.
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 SUPRA STV-LC2214WD does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. 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 inverter itself, including in the secondary rectifier of the main PSU. All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: TSUMV26KE-LF, FLASH: 25D40, EEPROM: 24C32 and replace failed chips with new ones. Some malfunctions may be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Once again, we remind users of TV: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
FIRMWARE FOR SPI FLASH -----------> Supra STV-LC2214WD (V2K12) Panel LTA216AT01
The appearance of the MainBoard JUG7.820.699-4 is shown in the figure below:JUG7.820.699-4
JUG7.820.699-4 can be used on TVs:
HYUNDAI H-LCD2418 (Panel M236MWF1), HYUNDAI H-LCD2218 (Panel M216H1-L01 Rev.C1), SUPRA STV-LC2214W (Panel LTA216AT01), SUPRA STV-LC1914WD (Panel HT185WX1-501), SUPRA STV-LC2214WD (Panel LTA216AT01), SUPRA STV-LC2414F (Panel M236MWF1), SUPRA STV-LC2414FD (Panel M236MWF1).
The appearance of the power supply
Main features of the SUPRA STV-LC2214WD device:
Installed matrix (LCD-panel) LTA216AT01.
The matrix control uses the Timing Controller (T-CON) 216AT01S2LV0.3.
An IV0190415 inverter is used to power the backlight, controlled by a TL494C PWM controller. An IVTEL 1900033 1036 transformer is installed in the inverter converter. Keys of type ME4542 are used as power elements of the inverter.
The necessary supply voltages for all nodes of the SUPRA STV-LC2214WD TV are generated by the AYP160001 power module or its analogs using PWM SOT23-6 microcircuits and 6N60 type power switches.
MainBoard - the main board (motherboard) is a JUG7.820.699-4 module, using CPU chips: TSUMV26KE-LF, FLASH: 25D40, EEPROM: 24C32 and others.
The TAF6-C2I21VH tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA216AT01
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 477.417x268.416 mm
Surface: Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
LCD TV SUPRA STV-LC2214WD with LCD display LTA216AT01, diagonal size 22 "(56 cm) in 16: 9 format. The brightness of the screen is 300 cd / m² with fluorescent lights CCFL (EEFL). Contrast - the ratio of maximum brightness to minimum is 1000: 1. Dynamic contrast ratio 4000: 1 is achieved by special control of the backlight.You can watch broadcasts and movies and 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 is decoded in analog PAL systems , SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, VideoCD, SVCD, JPEG.
The power of the speaker system of sound 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 x3, 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.
The power consumed by the TV in the operating mode from the network is 60 watts.
Overall dimensions: 594x470x137 mm.
Mass of the TV: 6.6 kg.
Attention! The LTRA216AT01 LCD panel of a SUPRA STV-LC2214WD LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to avoid permanent damage to the LCD panel!