Technical description and composition of the FUSION FLTV-40T21 TV, type of panel and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-40T21
Chassis / Version: V1P10
Panel: LVF400CMOT
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: SI512P TP.S512.PB771
IC MainBoard: Spi FLASH: 25Q64, Sound: RT9108NB
Technical Specifications FLTV-40T21
FUSION FLTV-40T21
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the FUSION FLTV-40T21 TV, as well as the external elements of the housing. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before carrying out the necessary measurements at control points. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldering of the outputs of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In case of a power supply module malfunction, external manifestations may be different, for example, the FUSION FLTV-40T21 does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be malfunctioning. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the filters of the secondary rectifiers (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be found by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
Sometimes the FUSION FLTV-40T21 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the LVF400CMOT backlight LED converter, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including the power supply unit (power supply).
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
In cases of attempts to repair the motherboard SI512P / TP.S512.PB771, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
Board repair and replacement of Spi FLASH: 25Q64 microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the use of BGA processor soldering technologies can be localized by the heating method.
Attention to users! Self-repair of a FUSION FLTV-40T21 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-40T21 V1P10, Main: SI512P / TP.S512.PB771, Panel: LVF400CMOT
The appearance of the MainBoard SI512P is shown in the figure below:SI512P
Main features of the FUSION FLTV-40T21 device:
Installed matrix (LED-panel) LVF400CMOT.
To power the backlight LEDs, a converter is used, combined with the SI512P main board.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a SI512P module, using Spi FLASH: 25Q64, Sound: RT9108NB and others.
The FUSION FLTV-40T21 TV with an LVF400CMOT LCD display, 40 "(102 cm) diagonal size in 16: 9 format. The required brightness of the screen is 350 cd / m² LED backlight LED. Dynamic contrast ratio of 100,000: 1 is achieved by special control of the LEDs. In The LED panels of this TV are equipped with edge LED backlighting - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed 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, MKV, JPEG.
The power of the sound system 10 W (2x5 W) provides 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), component, VGA, HDMI x2, USB. 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, 1360x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: 1120x655x144 mm.
Attention! The panel of the LVF400CMOT FUSION FLTV-40T21 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.