Technical description and composition of the FUSION FLTV-28L32B TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-28L32B
Chassis / Version: V1M11
Panel: M280X13-E1-H
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: NCP1251 (PWM SOT23-6)
MOSFET Power: MDF7N65B
MainBoard: JUC7.820.00081373
IC MainBoard: SPI FLASH: Q32B-14HIP
Tuner: R620D
Technical Specifications FLTV-28L32B
FUSION FLTV-28L32B
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs of the FUSION FLTV-28L32B, as well as other electronic devices, is recommended to begin with an external examination of the external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
If the FLTV-28L32B TV does not turn on, does not make any sounds when turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be malfunctioning, which is typical for some FUSION models. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), the mains fuse must first be checked. When it is broken, the power elements of the transistors and diodes of the rectifier bridge should be checked for avalanche (thermal) breakdown.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If there is no image when you turn on the FUSION FLTV-28L32B, 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 M280X13-E1-H 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.
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the rations of their terminals, as well as the reliability of the connections in the connectors and rations of the terminals.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
On the JUC7.820.00081373 motherboard, in case of a malfunction, you should first check the performance of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SPI FLASH Q32B-14HIP and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
The malfunction of the R620D tuner is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
Once again, remind users! Attempts to independently repair the FUSION FLTV-28L32B TV without the appropriate qualifications and experience can lead to its complete failure to repair!
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-28L32B V1M11, Main: JUC7.820.00081373, Panel: M280X13-E1-H
The appearance of the MainBoard JUC7.820.00081373 is shown in the figure below:JUC7.820.00081373
JUC7.820.00081373 can be used in TVs:
AKAI LEA-32C25M (Panel M320X13-E1-H), ERISSON 32LEC2300 (Panel M320X13-E1-L), FUSION FLTV-28L32B (Panel M280X13-E1-H).
Main features of the FUSION FLTV-28L32B device:
Installed matrix (LED panel) M280X13-E1-H.
To power the backlight LEDs, a converter is used, combined with the main board JUC7.820.00081373.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter using NCP1251 microcircuits (PWM SOT23-6) and power switches of the MDF7N65B type.
MainBoard - the main board (motherboard) is a JUC7.820.00081373 module, using SPI FLASH chips: Q32B-14HIP and others.
The R620D tuner provides television reception and channel tuning.
FUSION FLTV-28L32B TV with M280X13-E1-H LCD, 28 "(71 cm) diagonal size in 16: 9 format. The LED-panel of this TV has LED backlighting - Edge LED. You can view high quality images 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 the standards 480i, 480p, 576i, 576p, 720p, 1080i Stereo audio is provided by two built-in speakers using the NICAM STEREO audio processing system.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF),. 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.
Overall dimensions: 710x490x170 mm.
Attention! The M280X13-E1-H panel of a FUSION FLTV-28L32B 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.