Technical description and composition of the FUSION FLTV-24T25 TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-24T25
Chassis / Version: MT31LB
Panel: LVW240CMOT E12 V6
Power Supply (PSU): SHG1904A-101H
MainBoard: MT31LB (40-T31TOT-MAB2HG)
IC MainBoard: SPI Flash: 25Q64;
Tuner: RE221ZN V4A07AA
Technical Specifications FLTV-24T25
FUSION FLTV-24T25
General repair guidelines for TV LCD LED
Repair of the FUSION FLTV-24T25 TV should begin with a careful external examination of all its components and modules. In some cases, visible external damage to the elements can indicate the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of electronic circuit nodes. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered terminals of transformers or heating elements are detected, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
If the FUSION FLTV-24T25 does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a failure of the SHG1904A-101H power supply module. In some cases, only the processor power regulator may be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the network rectifier, as well as the large electrolytic capacitor of the filter of the network rectifier.
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).
In cases where the FUSION FLTV-24T25 TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the LVW240CMOT E12 V6 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
To check the health of the LEDs, as well as contact connections in the ruler 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.
In cases of attempts to repair the motherboard MT31LB (40-T31TOT-MAB2HG), it is necessary to check the operation of linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed by local heating.
If it is not possible to replace the MB board (SSB), you need to check the health of its elements - SPI Flash: 25Q64; . Defective components should be replaced.
In the absence of tuning to local television channels, you should make sure that the software is correct, as well as the presence of supply voltages at the terminals of the tuner RE221ZN V4A07AA.
Attention to the owners! Attempts to self-repair the FUSION FLTV-24T25 TV are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-24T25, Main: MT31LB, Panel: LVW240CMOT E12 V6
The appearance of the MainBoard MT31LB is shown in the figure below:MT31LB
Main features of the FUSION FLTV-24T25 device:
Installed matrix (LED-panel) LVW240CMOT E12 V6.
The formation of the necessary supply voltages for all nodes of the FUSION FLTV-24T25 TV is carried out by the SHG1904A-101H power module, or its analogues.
MainBoard - the main board (motherboard) is an MT31LB module, using SPI Flash chips: 25Q64; and others.
The tuner RE221ZN V4A07AA provides the reception of television programs and tuning to channels.
FUSION FLTV-24T25 TV with LVW240CMOT LCD display, 24 "(61 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.
Attention! The LVW240CMOT E12 V6 panel of the FUSION FLTV-24T25 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.