Technical description and composition of the FUSION FLTV-22T9 TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-22T9
Chassis / Version: V2L02
Panel: TB215WU3
PWM LED driver: HQ-LED31 REV2.1
Power Supply (PSU): Adapter
MainBoard: CV182L-B
IC MainBoard: 25Q32BVSIG, YD1517P
Tuner: CDT-3SP5I2-37
Control: RC-35
Technical Specifications FLTV-22T9D
FUSION FLTV-22T9
General repair guidelines for TV LCD LED
Repair of the FUSION FLTV-22T9 TV should begin with a careful external examination of all its components and modules. Based on visible external changes in the state of the components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before making the necessary measurements. 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 soldering will help the master to guess the causes and possible consequences of the malfunction.
In the absence of any signs of operability, when the FUSION FLTV-22T9 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard 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.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells 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 wiring.
If there is no image when you turn on the FUSION FLTV-22T9, 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 TB215WU3 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.
In most cases of lack of illumination, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
When trying to identify a break in the LED lines, it should be taken into account 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.
Diagnostics and repair of the CV182L_B 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.
In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - 25Q32BVSIG, YD1517P with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If you suspect a malfunction of the tuner CDT-3SP5I2-37, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
Remember! Attempts to self-repair by users of the FUSION FLTV-22T9 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-22T9 V2L02, Main: CV182L_B, Panel: TB215WU3
In case of failures in the software of SPI FLASH microcircuits made by Winbond, they can for some time restore their working capacity after temperature exposure - heating by a hairdryer of a soldering station or even a lighter. Usually this is enough to read the regular contents of the software. In such cases, the chip must be replaced with a new one.
Repair MainBoardThe appearance of the MainBoard CV182L-B is shown in the figure below:
The CV182L-B motherboard uses the MST6M182VG processor, combined with a scaler and installed using BGA technology.
It is advisable to start this type of MainBoard repair by checking the voltage converters and linear stabilizers necessary to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. Check the power of the 5V or 12V LCD panel, depending on the type of panel used, it is advisable directly on the LVDS connector. If, in the presence of the necessary supply voltage, the TV does not exit Stand-by mode, does not respond to the remote control and control buttons, the SPI Flash software should be updated.
CV182L-B can be used in TVs:
FUSION FLTV-22T9 (Panel TB215WU3), SUPRA STV-LC1925WL (Panel MT185GW01 V.1), SUPRA STV-LC19810WL (Panel TB190B300-A), SUPRA STV-LC1625WLD (Panel B156HW02), SUPRA STV-LC1937WL (Panel LM185WH2-TLA1).
Main features of the FUSION FLTV-22T9 device:
Installed matrix (LED panel) TB215WU3.
A converter controlled by the HQ-LED31 REV2.1 PWM controller is used to power the backlight LEDs.
To power all internal nodes of the FUSION FLTV-22T9 TV, an external adapter type source is used.
MainBoard - the main board (motherboard) is a CV182L-B module, using 25Q32BVSIG, YD1517P and other chips.
The tuner CDT-3SP5I2-37 provides the reception of television programs and tuning to channels.