Technical description and composition of the TV SUPRA STV-LC2417F, type of panel and applicable modules. The composition of the modules.SUPRA
Model: STV-LC2417F STV-LC2417FD
Chassis / Version: V1K12
Panel: M236H1-P01
MainBoard: CVMV26L-A-20 // CVMV26L-G (STV-LC2417FD)
IC MainBoard: CPU: TSUMV26KE-LF, FLASH: 25F40-100, EEPROM: 24C32
Tuner: F21WT-3BAR-E
Technical Specifications STV-LC2417F
SUPRA STV-LC2417F
General repair guidelines for TV LCD
Repair of the SUPRA TV with the V1K12 chassis should begin with a fault diagnosis, which involves a careful inspection of the external and internal elements of the device. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. Electrolytic capacitors of filters with a swollen body, as well as ring cracks or a layer of coal on burned-out resistors formed in soldered terminals of heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
If the power supply module malfunctions, external manifestations may be different, for example, the SUPRA STV-LC2417F does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the condition of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of 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 for no reason 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).
Sometimes the SUPRA STV-LC2417F TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the converter of the backlight lamps, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the inverter itself, including the power supply unit (power supply unit). If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
If the motherboard CVMV26L-A 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. In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: TSUMV26KE-LF, FLASH: 25F40-100, EEPROM: 24C32 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
We recommend the owners of the STV-LC2417F TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> Supra STV-LC2417F (V1K12) Panel M236H1-P01
The appearance of the MainBoard CVMV26L-A-20 is shown in the figure below:CVMV26L-A-20
The CVMV26L-A-20 motherboard uses the TSUMV26KE-LF processor (TSUMV36KE-LF), combined with a scaler, SPI FLASH 520Kb ROM and EEPROM 24C02C.
It is advisable to start the MainBoard repair by checking the voltage converters and linear stabilizers necessary to provide power in the operating and standby modes. Check the power supply of the 5V or 12V LCD panel, depending on the type of panel used, it is necessary to measure directly on the LVDS connector. If, in the presence of the necessary supply voltage, the TV does not exit Stand-by mode, does not respond to the remote control and control buttons, update SPI Flash software.CVMV26L-A-20 can be used in TVs:
SUPRA STV-LC1926WD (Panel M185XW01 V0), SUPRA STV-LC1922WD (Panel MT185GW01 V.0), SUPRA STV-LC2222WD (Panel CLAA215FA), SUPRA STV-LC2622WD (Panel MT215DW01), SUPRA STV-LC1626WD (Panel 720p HD 1600x900), SUPRA STV-LC2417F STV-LC2417FD (Panel M236H1-P01), SUPRA STV-LC1515WD (Panel 720p HD 1366x768), SUPRA STV-LC2422W (Panel M236M1-L01), SUPRA STV-LC2422WD (Panel Panel), THOMSON T24C99H CVMV26L-A (Panel M236H1-L01 Rev.C2).
Main features of the SUPRA STV-LC2417F device:
Installed matrix (LCD panel) M236H1-P01.
The required supply voltage for all nodes of the TV SUPRA STV-LC2417F provides a switching power supply.
MainBoard - the main board (motherboard) is a CVMV26L-A-20 module, using CPU chips: TSUMV26KE-LF, FLASH: 25F40-100, EEPROM: 24C32 and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: M236H1-P01
Type: a-Si TFT-LCD, CELL
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Transmissivity: 5.25% (with Polarizer)
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
LCD TV SUPRA STV-LC2417F with LCD M236H1-P01, diagonal size 24 "(61 cm) 16: 9 format. The brightness of the screen 250 cd / m² is provided by fluorescent lights CCFL (EEFL). Dynamic contrast 4000: 1 The TV features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and generation digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
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, S-Video, 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, 1360x768, 1920x1080.
The power consumed by the TV in the operating mode from the network is 50 watts.
Overall dimensions: With stand 580x451x240 mm, Without stand 580x402x84 mm.
TV Weight: 5.8 kg.
Attention! The M236H1-P01 panel of a SUPRA STV-LC2417F 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!