Technical description and composition of the SUPRA STV-LC3277FL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC3277FL
Chassis / Version: V1K03
Panel: T315HW07
LED backlight: Edge LED
T-CON: T370HW04 V4 CTRL BD (RM5101, AUO-12401)
LED driver (backlight): 37T06-D04
PWM LED driver: HV9982, G1564
MOSFET LED driver: 19NF20
Power Supply (PSU): AYP380001
PWM Power: L6599D, L6562D
MainBoard: T.MS6M48.3B 10423 & PL.MS6M20S.2B
IC MainBoard: CPU: MST6E48RHS, AUDIO: R2A15122, SPI Flash: 25Q32BVSIG DDR: H5PS5162FFR
Tuner: TDQ-ATF27WT-F
STV-LC3277FL Specifications
SUPRA STV-LC3277FL
General recommendations for TV LCD LED repair
Possible manifestations of defects
- SUPRA STV-LC3277FL TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
In some of these cases, the main switching power supply, the AYP380001 module, turns out to be faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM) L6599D, L6562D, if they do not have visible damage to the case and an open short circuit between the terminals, are usually checked by replacing.
- There is no picture, but there is sound and reaction to commands from the remote control. Or the image appears immediately after switching on and disappears.
The malfunction in most of these cases is found in the nodes and elements of the LED panel backlighting. The reason may be in the breakage of the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings connectors,
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source. By opening the panel, you can check each LED separately. Typically, Chinese multimeters light up one 3-volt LED slightly if the probes are connected to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the T.MS6M48.3B motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - CPU: MST6E48RHS, AUDIO: R2A15122, SPI Flash: 25Q32BVSIG DDR: H5PS5162FFR. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
If you suspect a malfunction of the TDQ-ATF27WT-F tuner, first of all, you need to make sure that the software is correct, as well as the presence of the required levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.
We remind users again! Attempts to repair the SUPRA STV-LC3277FL TV on your own without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC3277FL V1K03, Main: T.MS6M48.3B 10423, Panel: T315HW07
The appearance of the MainBoard T.MS6M48.3B is shown in the figure below:T.MS6M48.3B
T.MS6M48.3B can be used in TVs:
SUPRA STV-LC3277WL (Panel CH315BT-A02 rev.01 ROHS), SUPRA STV-LC2677WL (Panel HT260WX2-101).
Main features of SUPRA STV-LC3277FL device:
Installed matrix (LED panel) T315HW07.
Matrix control uses the T370HW04 Timing Controller (T-CON).
The LED driver 37T06-D04 is used to power the backlight LEDs, it is controlled by the PWM controller HV9982, G1564. The keys of the 19NF20 type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC3277FL TV is carried out by the AYP380001 power module, or its analogs using the L6599D, L6562D microcircuits.
MainBoard - the main board (motherboard) is a T.MS6M48.3B module, using CPU chips: MST6E48RHS, AUDIO: R2A15122, SPI Flash: 25Q32BVSIG DDR: H5PS5162FFR and others.
The TDQ-ATF27WT-F tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315HW07 V9 CELL
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Contrast Ratio: 4000: 1
Display Colors: 1.07B (10-bit), CIE1931 72%
Response Time: 5.5 (G to G)
Frequency: 120Hz
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V
SUPRA LED TV STV-LC3277FL with LCD T315HW07, 32 "(81 cm) in 16: 9 format. The required screen brightness of 450 cd / m² is provided by LED backlighting. Contrast - the ratio of maximum brightness to minimum is 3000: 1. Dynamic contrast ratio of 60,000: 1 is achieved by special control of the LEDs depending on the illumination of areas in the scene. The display technology of the model uses LED LED backlighting. The TV's capabilities provide for viewing programs and films 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 occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 12 W (2x6 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, VGA, HDMI x2, USB x2. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768, 1920x1080.
The power consumed by the TV in operating mode from the network is 110 watts.
Overall dimensions: 784x547x202 mm.
TV weight: 8.2 kg.
Attention! SUPRA STV-LC3277FL LED TV panel T315HW07 is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.
