Technical description and composition of the SUPRA STV-LC4215DF TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC4215DF
Chassis / Version: CV182H-F
Panel: T420HW05 V.0
Lamp backlight: 22 Lamp CCFL
Inverter (backlight): integrated into PSU
Power Supply (PSU): HTX-OP4200-201
PWM Power: L6599D, FAN7530
MainBoard: CV182H-F
IC MainBoard: CPU: CAT6354CQ; SPI Flash: WINB25Q32; HDMI: CAT6354CQ, Audio: TPA3110LD2
Tuner: CDT-3SP5I2-37
STV-LC4215DF Specifications
SUPRA STV-LC4215DF
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- SUPRA STV-LC4215DF TV does not turn on and does not show any signs of turning on, does not respond to control buttons and to the remote control.
In such cases, the HTX-OP4200-201 power supply usually fails. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and less often the current sensor in the source of the key.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) L6599D, FAN7530 are usually checked by replacing them with new ones, or knowingly working.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
The defect can be caused by problems in the nodes or elements of the display backlight, or in the power supply of the lamps or the inverter.
If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the CV182H-F motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: CAT6354CQ; SPI Flash: WINB25Q32; HDMI: CAT6354CQ, Audio: TPA3110LD2 which may require replacement. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (indicated by warming up).
Before changing the CDT-3SP5I2-37 tuner, if it is not possible to tune to TV channels, you should make sure that there are supply voltages that must be measured at the corresponding tuner pins and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Users and owners of TVs need to remember that attempts to self-repair the SUPRA STV-LC4215DF TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SUPRA STV-LC4215DF - Main Board: T.MSD309.8B 10304, Panel: T420HW09 V.0.
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC4215DF, Main: T.MSD309, Panel: T420HW09
The appearance of the MainBoard CV182H-F is shown in the figure below:CV182H-F
The CV182H-F motherboard uses the MST6M182VG processor, combined with a scaler and installed using BGA technology.
It is advisable to start repairing this type of MainBoard with checking the voltage converters and linear stabilizers required to provide power to the processor units: 1.2V, 2.5V, 3.3V. Check the power supply of the LCD panel 5V or 12V, depending on the type of panel used, it is advisable directly on the LVDS connector. If, in the presence of the necessary supply voltages, the TV does not come out of Stand-by mode, does not respond to the remote control and control buttons, you should update the SPI Flash software.
CV182H-F can be used in TVs:
FUSION FLTV-32H18 (Panel T315CK07-BW2), FUSION FLTV-3218B (Panel T315CK06-PW1), SUPRA STV-LC3215W STV-LC3215WD (Panel LTA320AP29), SUPRA STV-LC4215DF (Panel T420HW05 V.0 ).
External view of the power supply
Main features of SUPRA STV-LC4215DF device:
Installed matrix (LCD panel) T420HW05 V.0.
A converter combined with a power supply is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC4215DF TV is carried out by the HTX-OP4200-201 power module, or its analogs using L6599D, FAN7530 microcircuits.
MainBoard - the main board (motherboard) is a CV182H-F module, using CPU chips: CAT6354CQ; SPI Flash: WINB25Q32; HDMI: CAT6354CQ, Audio: TPA3110LD2 and others.
The CDT-3SP5I2-37 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T420HW05 V0
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA3, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5.5 (G to G)
Frequency: 120Hz
Lamp Type: 22 pcs CCFL Without Driver
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V
SUPRA LCD TV STV-LC4215DF with LCD T420HW05, 42 "(107 cm) 16: 9 diagonal. Screen brightness of 500 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast is the ratio of maximum brightness to minimum 1450: 1 Dynamic contrast ratio of 29000: 1 is achieved by special control of backlighting The TV is capable of viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping is performed in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported media file formats: MP3, DivX, JPEG.
Speaker power of 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, audio x2, component, SCART, RGB, VGA, HDMI x4, USB. 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, 1280x1024, 1360x768. The digital tuner is capable of receiving TV channels in DVB-T MPEG4 standards.
The power consumed by the TV in operating mode from the network is 280 watts.
Overall dimensions: 1025x720x315 mm.
TV weight: 22.7 kg.
Attention! SUPRA STV-LC4215DF LCD TV panel T420HW05 V.0 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!
