Technical description and composition of the FUSION FLTV-32T25 TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-32T25
Chassis / Version: V1N05
Panel: LVW320CSOT E134 V2
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
MainBoard: MT31LB 40T-31TOT-MAD2HG
IC MainBoard: SPI FLASH: 25Q64
Tuner: 07-600CI3-SA2G ST34WN-2T-E
Technical Specifications FLTV-32T25
FUSION FLTV-32T25
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-32T25 TV, as well as the external elements of the housing. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
Sometimes the FUSION FLTV-32T25 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is cut off, then it is necessary to check the diodes of the rectifier bridge and the key transistor of the converter for a breakdown of the PN junctions, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself for no reason that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the FUSION FLTV-32T25 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the LVW320CSOT E134 V2 panel, or their power converter - LED drivers. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as the contact connections in the connectors and soldering.
When trying to identify a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Diagnosis and repair of the motherboard MT31LB is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In cases of attempts to repair the MB board (SSB), it is necessary to check the serviceability of its elements - SPI FLASH: 25Q64 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If the TV works normally from external devices, but does not tune into television channels, the tuner 07-600CI3-SA2G ST34WN-2T-E may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the power supply of varicaps (30-33V).
Attention! For users and owners of FLTV-32T25 TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-32T25 V1N05, Main: MT31LB, Panel: LVW320CSOT E134 V2
If a failure occurs in the SPI FLASH Winbond software, we recommend that you replace the chip with a new one. In addition, faulty Winbond microcircuits can sometimes recover for a while after being heated by a soldering station or even a lighter, which is enough to read its regular contents.
Repair MainBoardThe appearance of the MainBoard MT31LB is shown in the figure below:
MT31LB
Main features of the FUSION FLTV-32T25 device:
Installed matrix (LED-panel) LVW320CSOT E134 V2.
To power the backlight LEDs, a converter is used, combined with the MT31LB main board.
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 an MT31LB module, using SPI FLASH chips: 25Q64 and others.
Tuner 07-600CI3-SA2G ST34WN-2T-E provides the reception of television programs and tuning to channels.
FUSION FLTV-32T25 TV with LVW320CSOT LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 280 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 60,000: 1 is achieved by special control of the LEDs. 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 Supported media file formats: MP3, 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), SCART, HDMI, 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, 1360x768.
A digital tuner is capable of receiving television channels in the DVB-T, DVB-T2 standards.
Attention! The LVW320CSOT E134 V2 panel of the FUSION FLTV-32T25 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.