Technical description and composition of the TV SUPRA STV-LC2615W, type of panel and applicable modules. The composition of the modules.SUPRA
Model: STV-LC2615W
Chassis / Version: Ver: V2K03
Panel: TC260B301
Inverter (backlight): integrated into PSU
PWM Inverter: UBA2071AT
Power Supply (PSU): HKLIPS2604-3A
PWM Power: FAN7530 (PFC), OB2269CP (PWM Flayback)
MainBoard: T.MS6M48.1C
IC MainBoard: CPU: MST6M48RHS, DDRAM: NT5TU32M16CG, SPI Flash 25L3206E
Tuner: ET-6T1E-LF-108W-A
Technical Specifications STV-LC2615W
SUPRA STV-LC2615W
General recommendations for TV LCD repair
Repair and diagnostics of any electronic device, in particular SUPRA with T.MS6M48.1C chassis, it is advisable to begin with a careful external examination of the internal and external elements. In some cases, visible external damage to the elements can indicate the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of electronic circuit nodes. Electrolytic capacitors of filters with a swollen case, as well as ring cracks formed in the soldering of the leads of heating elements or a layer of coal on burned out resistors sometimes prompt the repairman about the causes of the malfunction and the possible consequences.
Malfunctions of the power module can be expressed in different ways, for example, SUPRA STV-LC2615W does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
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 the SUPRA STV-LC2615W TV does not have a picture, but there is sound, the malfunction should be sought in the backlight power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overestimated ESR. All necessary precautions must be taken when disabling the inverter protection during diagnostics and do not leave it disabled after repair is completed.
If the motherboard T.MS6M48.1C is faulty, first of all it is necessary to check all linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes it is possible to check the health of the MB only by replacing it. If it is not possible to replace the MB (SSB) board, you must check the health of its elements - CPU: MST6M48RHS, DDRAM: NT5TU32M16CG, SPI Flash 25L3206E. Defective components should be replaced.
Attention! Users and owners of STV-LC2615W TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2615W, Main: T.MS6M48.1C, Panel: TC260B301
The appearance of the MainBoard T.MS6M48.1C is shown in the figure below:T.MS6M48.1C
The motherboard T.MS6M48.1C is manufactured using the MST6M48RHS microprocessor, which includes a graphic scaler controller. For organization of the processor, an external RAM NT5TU32M16CG DDR2 SDRAM in BGA version and SPI FLASH 25Q32 (25L32) (4Mb) are used as read-only memory (ROM). A DC / DC converter with an output voltage of 1.2V is used to supply power to the processor core. Other processor nodes are powered by linear voltage stabilizers 2.5V, 3.3V. DDR RAM is powered by 1.8V, SPI FLASH ROM needs 3.3V.
It is advisable to start the MainBoard repair by checking the supply voltage in Stand-by mode 3.3V, it can be measured on pin 8 of the SPI chip. In operating mode, check the operability of all linear stabilizers and DC / DC converters. If there is a backlight and there is no image, you need to check the power of the 5V or 12V panel (depending on the type of LCD panel), which should be present directly on the LVDS connector.
If the indicator signals Stand-by mode and does not respond to the remote control and control buttons, it is recommended to update the SPI Flash software. Taking into account the glitchiness of Winbond's SPI microcircuits, it is advisable to replace them with new ones in case of software failures.
T.MS6M48.1C can be used in TVs:
FUSION FLTV-32W4 (Panel DTW0315CK01-B), SUPRA STV-LC2615W (Panel TC260B301), SUPRA STV-LC2615F (Panel TC260F103 HD), SUPRA STV-LC3215FD (Panel V315H1-L02 Rev C1).
Main features of the SUPRA STV-LC2615W device:
Installed matrix (LCD panel) TC260B301.
A converter combined with a power supply is used to power the backlight lamps, it is controlled by the UBA2071AT PWM controller.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC2615W TV is carried out by the HKLIPS2604-3A power supply module, or its analogs using FAN7530 (PFC), OB2269CP (PWM Flayback) microcircuits.
MainBoard - the main board (motherboard) is a T.MS6M48.1C module, using CPU: MST6M48RHS, DDRAM: NT5TU32M16CG, SPI Flash 25L3206E and others.
Tuner ET-6T1E-LF-108W-A provides reception of television programs and tuning to channels.
LCD TV SUPRA STV-LC2615W with LCD TC260B301, 26 "(66 cm) 16: 9. Brightness of the screen of 300 cd / m2 is provided by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio 2000: 1 is achieved by a special control of the 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, 1080p.
The power of the sound system 16 W (2x8 W) provides 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, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x2. 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.
The power consumed by the TV in operating mode from the network is 160 watts.
Overall dimensions: 615x495x215 mm.
TV weight: 14 kg.
Attention! SUPRA STV-LC2615W LCD TV panel TC260B301 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to avoid permanent damage to the LCD panel!