Technical description and composition of the TV SUPRA STV-LC2222W, type of panel and applicable modules. The composition of the modules.SUPRA
Model: STV-LC2222W
Panel: CLAA215FA01 (M)
Power Supply (PSU): Adapter 12V
MainBoard: SP208ESA
IC MainBoard: SPV7050P, 24C32, EN25F80, TDA1517P,
Tuner: TNF931D-BFR1
Technical Specifications STV-LC2222W
SUPRA STV-LC2222W
General repair guidelines for TV LCD
The SUPRA TV made on the HK-7050A-V2.08-E (SP208ESA) chassis, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Often, according to the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. 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 power supply module malfunctions, the external manifestations may be different, for example, the SUPRA STV-LC2222WD 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. 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.
In cases where the SUPRA STV-LC2222WD TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the inverter (converter for powering the backlight). When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
In most cases, the diagnosis and repair of the inverter is difficult due to the organization of protection, which turns it off in emergency cases to avoid fires during short circuits or breaks in high-voltage circuits and during depressurization of lamps. Often, repairmen block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software). Board repair and replacement of SPV7050, CT3257A, EN25T80, AT24C32, TDA9885TS, YD1517P microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the use of BGA processor soldering technologies can be localized by the heating method.
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 repair of electronic equipment ..................
SCHEMATIC DIAGRAM / SERVICE MANUAL ----------------> SP208ESA, CPU: SPV7050
SCHEMATIC DIAGRAM / SERVICE MANUAL ----------------> SUPRA STV-LC2222WD. Мain CVMV26L-A-20
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2222W, EN25T80, Main: SP208ESA HK-7050A-V2.08-E
The appearance of the MainBoard SP208ESA is shown in the figure below:SP208ESA
SP208ESA can be used in TVs:
SUPRA STV-LC1522WD (Panel 15 "), SUPRA STV-LC1922WD (Panel MP185GW01 V.2), SUPRA STV-LC2222W (Panel CLAA215FA01 (M)), SUPRA STV-LC2222WD (Panel CLAA215FA01).
Main features of the SUPRA STV-LC2222W device:
Installed matrix (LCD panel) CLAA215FA01 (M).
To power all internal nodes of the SUPRA STV-LC2222W TV, an external adapter 12V type source is used.
MainBoard - the main board (motherboard) is an SP208ESA module, using chips SPV7050P, 24C32, EN25F80, TDA1517P, and others.
The TNF931D-BFR1 tuner provides TV reception and channel tuning.
Information from an alternative source:
SUPRA STV-LC2222W Version V2J08
Panel Type (Matrix): MT215DW01 V.0
Motherboard: CVMV26L-A-20, TSUMV26KE-LF, Tuner: F21WT-3BAR-E, IR: TS096-185 / 216
PSU & Invertor: LK-PI220417-039E
Additional technical information about the panel:
Brand: CPT
Model: CLAA215FA01A
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Glare (Haze 0%)
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
LCD TV SUPRA STV-LC2222W with LCD CLAA215FA01, diagonal size 22 "(55 cm) 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 of 2000: 1 is achieved by special control of the backlight. 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, RGB, 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.
The power consumed by the TV in the operating mode from the network is 60 watts.
Overall dimensions: 540x398x180 mm.
The mass of the TV: 8.2 kg.
Attention! The CLAA215FA01 LCD panel of a SUPRA STV-LC2222W 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!