Technical description and composition of the FUSION FLTV-42T25 TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-42T25
Chassis / Version: V1N07
Panel: LFV420CMOT E18 V2
MainBoard: MT31LB 40T-31TOT-MAD2HG
IC MainBoard: TPA3110D2, W25Q64FVSIG, ATBM7811B
Tuner: 07-600CI3-SA2G ST34WN-2T-E
Technical Specifications FLTV-42T25
FUSION FLTV-42T25
General repair guidelines for TV LCD LED
Repair of the FUSION FLTV-42T25 TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. Visible damage to elements can sometimes indicate the direction of a defect search even before the necessary measurements are taken. 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-42T25 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 the transistors and diodes of the rectifier bridge should be checked for avalanche (thermal) breakdown.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If the FUSION FLTV-42T25 TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the LFV420CMOT E18 V2 panel is likely. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for excessive ESR.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the lines and connectors.
An open in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.
The motherboard 40T-31TOT-MAD2HG = MT31LB must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power stabilizers of the microcircuit are working, a software update may be necessary.
In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - 25Q64BV with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
It should be remembered! Attempts to repair the FUSION FLTV-42T25 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-42T25 V1N07, Main: 40T-31TOT-MAD2HG = MT31LB, Panel: LFV420CMOT E18 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-42T25 device:
Installed matrix (LED-panel) LFV420CMOT E18 V2.
The required supply voltage for all nodes of the TV FUSION FLTV-42T25 provides a switching power supply.
MainBoard - the main board (motherboard) is an MT31LB module, using TPA3110D2, W25Q64FVSIG, ATBM7811B and other chips.
Tuner 07-600CI3-SA2G ST34WN-2T-E provides the reception of television programs and tuning to channels.
FUSION FLTV-42T25 TV with LFV420CMOT LCD, 42 "(107 cm) diagonal size in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by special control of the LEDs. V The LED panels of this TV are equipped with edge LED backlighting - Edge LED.The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). 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 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, audio x2, component, SCART, VGA, 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, 1280x1024, 1360x768, 1920x1080.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: 1070x696x192 mm.
Attention! The LFV420CMOT E18 V2 panel of the FUSION FLTV-42T25 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.