Technical description and composition of the FUSION FLTV-32L40B TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-32L40B
Chassis / Version: V1M11
Panel: ST315A04-5
LED driver (backlight): integrated into MainBoard
PWM LED driver: UTC494
Power Supply (PSU): integrated into MainBoard
MainBoard: LAD.MV.D1
IC MainBoard: SPI FLASH: W25Q32
Control: Service Mode: MENU-1147
Technical Specifications FLTV-32L40B
FUSION FLTV-32L40B
General repair guidelines for TV LCD LED
The FUSION 32L40B TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Electrolytic capacitors of filters with a swollen body, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes prompt the repairman the causes of the malfunction and possible consequences.
Malfunctions of the power module can be expressed in different ways, for example, the FUSION 32L40B does not turn on at all and the control lights on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the secondary rectifiers of the converter. In the event of a fuse breaking, the cause should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
If there is no image when you turn on the FUSION 32L40B, 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 ST315A04-5 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 and contact connections in their power circuit, it is necessary to disassemble the panel.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
Diagnostics and repair of the LAD.MV.D1 motherboard is carried out by checking the operability of the stabilizers or power converters of the module chips. In some cases, a software update is required.
If there is no way to replace the MB (SSB) card, you need to check the health of its elements - SPI FLASH: W25Q32. Defective components should be replaced.
Attention to users! Self-repair of the FUSION 32L40B TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> FUSION 32LN40B V1M11, Main: LAD.MV.D1, Panel: ST315A04-5
The appearance of MainBoard LAD.MV.D1 is shown in the figure below:LAD.MV.D1
Main features of the FUSION FLTV-32L40B device:
Installed matrix (LED panel) ST315A04-5.
To power the backlight LEDs, a converter is used, combined with the main board LAD.MV.D1, controlled by the UTC494 PWM controller.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit.
MainBoard - the main board (motherboard) is a module LAD.MV.D1, using microchips SPI FLASH: W25Q32 and others.
The FUSION FLTV-32L40B TV with an ST315A04-5 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The required brightness of the screen is 320 cd / m² LED backlighting. The LED technology in the production technology of the screen of this TV model is LED It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of 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 standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound system 16 W (2x8 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), AV, VGA, HDMI x3, 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.
Attention! The F3ION FLTV-32L40B LED TV panel ST315A04-5 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.