Technical description and composition of the SUPRA STV-LC2611W TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC2611W
Chassis / Version: V1L06
Panel: T260XW02
Inverter (backlight): VIT1866.50 rev1
Power Supply (PSU): MLT868 REV: 1.2
PWM Power: L6562D (PFC), SG3525AN
MainBoard: JUG7.820.265-2
IC MainBoard: SVP-AX_256 NJW1142 TDA9885T / TDA9886T TDA7266 MPS1411 PI5V330S
Tuner: AFT7 / W003
STV-LC2611W Specifications
SUPRA STV-LC2611W
General recommendations for TV LCD repair
SUPRA with a chassis, like other TVs, it is advisable to start repairing with a careful examination of the external and internal elements and modules. It often happens that visible damage to elements or connections helps determine the direction of troubleshooting. Swollen electrolytic or metal-ceramic capacitors, charred resistors, ring cracks in the soldering of the element terminals - all this can significantly help the master to determine the causes and consequences of the malfunctions in the TV.
Sometimes the SUPRA STV-LC2611W TV just won't turn on. No control lamps on the front panel are on or blinking, the TV does not respond to the remote control and does not emit any sounds or any signs of life when turned on. The most likely cause of a malfunction is the failure of the common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If the SUPRA STV-LC2611W does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn 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 PSU.
Inverter diagnostics can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency situations, for example, when short circuits or breaks in the lamp supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the SVP-AX_256 NJW1142 TDA9885T / TDA9886T TDA7266 MPS1411 PI5V330S elements. Malfunctions in BGA chips are usually easy to detect by warm-up.
Remember! Attempts to self-repair by users of the SUPRA STV-LC2611W TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of the MainBoard JUG7.820.265-2 is shown in the figure below:JUG7.820.265-2
JUG7.820.265-2 can be used on TVs:
AKAI LTA-26C904 (Panel V260B1-L02 ), SUPRA STV-LC2611W (Panel T260XW02), SUPRA STV-LC3204WD (Panel LTA320AP02).
External view of the power supply
Main features of SUPRA STV-LC2611W device:
Installed matrix (LCD-panel) T260XW02.
The VIT1866.50 inverter is used to power the backlight lamps.
The necessary supply voltages for all nodes of the SUPRA STV-LC2611W TV are generated by the MLT868 power module or its analogs using L6562D (PFC), SG3525AN microcircuits.
MainBoard - the main board (motherboard) is a JUG7.820.265-2 module, using SVP-AX_256 NJW1142 TDA9885T / TDA9886T TDA7266 MPS1411 PI5V330S chips and others.
The AFT7 / W003 tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: AUO
Model: T260XW02 V6
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 15/5 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 6 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
SUPRA LCD TV STV-LC2611W with LCD T260XW02, 26 "(66 cm) 16: 9 diagonal. You can watch TV programs and movies and images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Stereo sound is realized by two built-in speakers. The audio processing system NICAM STEREO is used.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, VGA. An output for connecting headphones 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.
Overall dimensions: With a support 1125x812x204 mm, Without a support 1054x791x120 mm.
Attention! SUPRA STV-LC2611W LCD TV panel T260XW02 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to avoid permanent damage to the LCD panel!