Technical description and composition of the SUPRA STV-LC3204WD TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC3204WD
Chassis / Version: ELT-01 Supra STV-LC2604W
Panel: LTA320AP02
T-CON: 320AP03C2LV0.1
Inverter (backlight): SSI320-4UA01
PWM Inverter: OZ9966SN
MOSFET Inverter: STU432S, KMB054N40DB
Trans Inverter: LT-U3208
Power Supply (PSU): MLT868
PWM Power: L6562D (PFC), SG3525AN
MainBoard: JUG7.820.265-2
IC MainBoard: TDA9886TS, SGM330A, KMA6D5P, D1216AJTA-4B-E, CAT6353CQ, TDA7266SA
Tuner: AFT7 / W103 T7W103G
Control: TVD34-M2-1
SUPRA
Model: STV-LC3204WD
Chassis / Version: LS02 (AX32 / AX68)
Panel: 32 inch
MainBoard: LS02 (AX32 / AX68)
IC MainBoard: SVP-AX NJW1142 DS2411 TMI8-C22I1VH TDA4791P AOZ1010 MPS1411 PI5V330S
Tuner: TMI8-C22I1VH
STV-LC3204WD Specifications
SUPRA STV-LC3204WD
General recommendations for TV LCD repair
Repair of a SUPRA TV with LS02 chassis (AX32 / AX68) should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. Based on visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before taking the necessary measurements. If ring cracks are found in the soldering of the element terminals or broken connecting tracks, swollen capacitors or charred resistors - all this may be characteristic signs of the causes or consequences of an already known typical malfunction.
If the STV-LC3204WD TV does not turn on, does not emit any sounds when turned on, as well as no indicators on the front panel are lit or blinking, there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some SUPRA models. It is advisable to start diagnostics 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 a breakdown state in such situations.
It should be borne in mind that in the practice of repair, it is extremely rare for key transistors in switching power supplies (SMPS) to fail without reasons that should be looked for by checking other components, for example, a key breakdown can provoke faulty elements of damper circuits, or dried electrolytic capacitors or broken primary resistors power supply circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator microcircuit are subject to verification, which it is desirable to check by replacement.
If SUPRA STV-LC3204WD does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight lamps or their power converter - inverter. Sometimes, when turned 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 power supply unit.
The operation of the power circuits of the inverter and the backlight lamps in the normal mode is controlled by special protection, which is organized for fire safety purposes, for example, to disconnect when short circuits or breaks in high-voltage connections or when lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
In cases of attempts to repair the TMI8-C22I1VH motherboard, it is necessary to check the performance of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating. In some cases, it is necessary to check or replace (if necessary) elements of the MB (SSB) board - SVP-AX NJW1142 DS2411 TMI8-C22I1VH TDA4791P AOZ1010 MPS1411 PI5V330S. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
Owners and users of the SUPRA STV-LC3204WD TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to the complete non-repairability of the device!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------> CHASSIS LS02 AKAI
The same chassis for TVs SUPRA STV-LC3211W , STV-LC3211WD STV-LC4211W , STV-LC4204W , STV-LC3204WAdditional MainBoard Repair
The appearance of the MainBoard LS02 is shown in the figure below:
LS02
Main features of SUPRA STV-LC3204WD device:
Installed matrix (LCD panel) 32 inches.
The necessary supply voltages for all nodes of the SUPRA STV-LC3204WD TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is an LS02 module, using SVP-AX NJW1142 DS2411 TMI8-C22I1VH TDA4791P AOZ1010 MPS1411 PI5V330S chips and others.
The TMI8-C22I1VH tuner provides reception of television programs and tuning to channels.
Information from an alternative source:
Supra STV-LC3204WD chassis ELT-01 / Supra STV-LC2604W Clones: Changhong LT26GH01E / Hyundai H-LCD3200
Panel type (matrix): LTA320AP02
Motherboard: JUG7.820.265-2, 24LC64B, 24LC02B x3, 25X80AVSIG, TDA7266SA, 74HC4052D, 74LVC14AD, CAT6353CQ, D1216AJTA-4B-E, KMA6D5P, SGM330A, TDA9886TS, SAW3FT
T-con: 320AP03C2LV0.1
Invertor: SSI320-4UA01
PSU: MLT868, SG3525AN
Remote control: TVD34-M2-1
LCD TV SUPRA STV-LC3204WD with LCD, 32 "(81 cm) diagonal, 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lighting. Dynamic contrast ratio 2000: 1 is achieved by special control work of backlight It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, MPEG4, VideoCD, SVCD, 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, S-Video, component, SCART x2, RGB, VGA, HDMI x2. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Dimensions: With stand 876x653x180 mm, Without stand 1054x791x120 mm.
TV weight: 18 kg.
Attention! The SUPRA STV-LC3204WD LCD TV panel is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!