Technical description and composition of the SUPRA STV-LC2602WD TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC2602WD
Chassis / Version: DV1303-ZC01-02 (A)
Panel: 26 inch
Inverter (backlight): integrated into PSU
PWM Inverter: SG3525AN
Power Supply (PSU): MIP260B-1
PWM Power: L656JD, F9222, KA3525A
MainBoard: TV3201-ZC01-02
IC MainBoard: AM5888, AOZ1014, SPHE8202L, DF3544, STA540S, MP1591, FSAV330; DVD: DV2602, DV1101-YL01-01
Tuner: JS-6H2 / 121
Technical Specifications STV-LC2602WD
SUPRA STV-LC2602WD
General recommendations for TV LCD repair
SUPRA TV made on the chassis DV1303-ZC01-02 (A) 200712 TV3201-ZC01-02 DV2602, DV1101-YL01-01, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
In cases when the SUPRA STV-LC2602WD TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up or blink, and there are no sounds and no signs of operability at all, the power module is most likely faulty or there is no power processor on the motherboard (typical defect of some SUPRA TV models). In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
In most cases, breakdowns of keys in switching power supplies (SMPS) do not occur without reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If, when the TV is turned on, the image appears and immediately disappears, or is absent initially when turned on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (backlight power converter). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
The repair of an inverter can often be somewhat complicated by the device of special protection circuits, which are designed to turn it off in emergency cases for the purpose of fire safety when lamps are depressurized, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - AM5888 AOZ1014 SPHE8202L DF3544 STA540S MP1591 FSAV330 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by heating.
Owners of the STV-LC2602WD TV are advised to contact only qualified specialists with experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Sсhematic diagram TV3201
The appearance of the MainBoard TV3201-ZC01-02 is shown in the figure below:TV3201-ZC01-02
TV3201-ZC01-02 can be used in TVs:
SUPRA STV-LC2601W (Panel V260B1-L02 REV.C1), SUPRA STV-LC2602WD (Panel 26 "), SUPRA STV-LC3201W (Panel V315B1-L01), SUPRA STV-LC3202W (Panel V315B1-L01).
External view of the power supply
Main features of SUPRA STV-LC2602WD device:
Installed matrix (LCD panel) 26 inches.
A converter combined with a power supply is used to power the backlight lamps, it is controlled by the SG3525AN PWM controller.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC2602WD TV is carried out by the MIP260B-1 power supply module, or its analogs using the L656JD, F9222, KA3525A microcircuits.
MainBoard - the main board (motherboard) is a TV3201-ZC01-02 module, using chips AM5888, AOZ1014, SPHE8202L, DF3544, STA540S, MP1591, FSAV330; DVD: DV2602, DV1101-YL01-01 and others.
The JS-6H2 / 121 tuner provides reception of television programs and tuning to channels.
LCD TV SUPRA STV-LC2602WD with 26 "(66 cm) diagonal LCD display, 16: 9 format. 400 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Contrast - the ratio of maximum brightness to minimum is 800: 1. 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 systems PAL, SECAM, NTSC. Graphic processing and generation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, VideoCD, SVCD, Picture CD, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, audio x4, S-Video x2, component, SCART x2, RGB, VGA, HDMI x2, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768. The digital tuner is capable of receiving TV channels in DVB-T standards.
The power consumed by the TV in operating mode from the mains is 100 watts.
Overall dimensions: 667x526x107 mm.
TV weight: 13.1 kg.
Attention! The SUPRA STV-LC2602WD LCD TV panel is its most expensive component.
Avoid hitting the glass and pressing on the screen surface to avoid irreversible damage to the LCD panel!