Technical description and composition of the TV SUPRA STV-LC2217F, type of panel and applicable modules. The composition of the modules.SUPRA
Model: STV-LC2217F STV-LC2217FD
Chassis / Version: CVMV26L
Panel: HM215WU3-100
Inverter (backlight): LK-IN220201A
Power Supply (PSU): LK1060-005C
PWM Power: LD7575PS
MOSFET Power: FQPF8N60C
MainBoard: CVMV26L-A-20 // CVMV26L-G DVD DL-08HJ-00-043 811101506
IC MainBoard: Flash F40-100BCP
Control: IR: 22A22_IR_V2.0
Technical Specifications STV-LC2217F
SUPRA STV-LC2217F
General repair guidelines for TV LCD
Repair and diagnostics of any electronic device, in particular SUPRA with the CVMV26L-A chassis, it is advisable to start with a careful external examination of the internal and external elements. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. 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.
In the absence of any signs of operability, when the SUPRA STV-LC2217F does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the rectifier bridge diodes and the electrolytic capacitor of the power rectifier filter.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
If there is no image when you turn on the SUPRA STV-LC2217F, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit. If, when 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.
Repair or diagnostics of the CVMV26L-A motherboard should begin by checking the stabilizers or power converters of its chips. If necessary, update the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - Flash F40-100BCP which may require replacement with new ones. If the 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).
Owners and users of the SUPRA STV-LC2217F TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2217F, Main: CVMV26L-A, Panel: 1080p Full HD, 1920x1080
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).
The appearance of the power supply
Main features of the SUPRA STV-LC2217F device:
Installed matrix (LCD panel) HM215WU3-100.
The inverter LK-IN220201A is used to power the backlight.
The necessary supply voltages for all nodes of the TV SUPRA STV-LC2217F are formed by the power module LK1060-005C, or its analogs using microcircuits LD7575PS and power switches of the type FQPF8N60C.
MainBoard - the main board (motherboard) is a CVMV26L-A-20 module, using Flash F40-100BCP chips and others.
Additional technical information about the panel:
Brand: BOE
Model: HM215WU3-100
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 5.8% (with Polarizer)
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
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-LC2217F with LCD HM215WU3-100, diagonal size 22 "(56 cm) 16: 9 format. The brightness of the screen is 250 cd / m² with fluorescent lights CCFL (EEFL). Contrast - the ratio of maximum brightness to a minimum of 4000: 1. TV 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). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and Digital signal generation 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 a support 529x382x210 mm, Without a support 529x332x71 mm.
Attention! The HM215WU3-100 panel of a SUPRA STV-LC2217F 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!