Technical description and composition of the SUPRA STV-LC2285FL TV, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC2285FL
Chassis / Version: V3K11
Panel: V215H1-LE1
MainBoard: 5800-A8M260-0010 V0.32
IC MainBoard: FLASH: 25L3205D (U42)
Tuner: HFT2-8F / 115CW
Technical Specifications STV-LC2285FL
SUPRA STV-LC2285FL
General repair guidelines for TV LCD LED
It is advisable to start repairing electronic devices, including the SUPRA STV-LC2285FL TV, with an external examination of its external and internal elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain circuit elements even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Electrolytic capacitors of filters with a swollen body, as well as ring cracks or a layer of coal on burned-out resistors formed in soldered terminals of heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
If the STV-LC2285FL TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some SUPRA models. 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 mains rectifier filter.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If there is no image when you turn on the SUPRA STV-LC2285FL, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the V215H1-LE1 panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
An open in the LED lines connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.On the motherboard 5800-A8M260-0010 V0.32, in case of a malfunction, you should first check the operation of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Board repair and chip replacement FLASH: 25L3205D (U42) are made in the presence of the necessary equipment, and the corresponding element base. Malfunctions associated with the application of the soldering technology of the BGA processor can be localized by the heating method.
If you suspect a malfunction of the HFT2-8F / 115CW tuner, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
Once again, we remind TV users: 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 field of electronic equipment repair.
FIRMWARE FOR SPI FLASH -----------> Supra STV-LC2285FL (V3K11), Panel V215H1-LE1
The appearance of the MainBoard 5800-A8M260-0010 is shown in the figure below:5800-A8M260-0010
Main features of the SUPRA STV-LC2285FL device:
Installed matrix (LED-panel) V215H1-LE1.
The required supply voltage for all nodes of the TV SUPRA STV-LC2285FL provides a switching power supply.
MainBoard - the main board (motherboard) is a 5800-A8M260-0010 module, using FLASH chips: 25L3205D (U42) and others.
The HFT2-8F / 115CW tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V215H1-LE1
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: Antiglare (Haze 25%)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 70%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 13S6P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
LED TV SUPRA STV-LC2285FL with LCD V215H1-LE1, diagonal size 22 "(56 cm) 16: 9 format. The required brightness of the screen 250 cd / m² is provided by LED backlight LED. Contrast - the ratio of maximum brightness to minimum 1000: 1. Dynamic contrast ratio 4000: 1 is achieved by special control of the LEDs depending on the lighting in the plot.In this model, an LED panel with the end-face LEDs is used - Edge LED. Resolution 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 Supported media file formats: MP3, WMA, MPEG4, JPEG.
The power of the sound system 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 x2, audio x3, component, SCART, VGA, HDMI x3, USB. 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 35 watts.
Overall dimensions: 576x425x116 mm.
TV Weight: 4.8 kg.
Attention! The panel of the V215H1-LE1 SUPRA STV-LC2285FL LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
