Friday, 26 June 2020

REPAIR / SERVICING TV FUSION FLTV-40C10

Technical description and composition of the FUSION FLTV-40C10 TV, panel type and applicable modules. The composition of the modules.
FUSION LED
Model: FLTV-40C10
Chassis / Version: 40-0MS82L-MAB2LG
Panel: T390XVN01.0 LVW390AUOT E2 V9
LED backlight: T0T-39B2600-8X5-5EA-L / R, NL5XE8 4C-LB390T-YHA L / R
T-CON: T390XVN01.0 31T11-C02 + 31T11-S00
LED driver (backlight): integrated into PSU
PWM LED driver: MP3394
MOSFET LED driver: AOD458
Power Supply (PSU): IPE06R41 IPE06R21B-1 81-PBE039-G01
PWM Power: TEA1733, MC34063
MOSFET Power: 7N65, AOD4185
MainBoard: 40-0MS82L-MAB2LG // 40-MS1306-MAB2LG
IC MainBoard: SPI Flash: 25Q32BSIG;
Tuner: 07-389SI3-NF4G XF-3SA-H
Technical Specifications FLTV-40C10
FUSION FLTV-40C10
General repair guidelines for TV LCD LED
Repair of electronic devices, including the FUSION FLTV-40C10 TV, it is advisable to start with an external examination of its external and internal elements. Based on visible external changes in the state of the components, it is often possible to determine the direction of the troubleshooting before making the necessary measurements. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the FUSION FLTV-40C10 does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or 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-40C10, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LVW390AUOT E2V9 panel, or in their power converter.
A malfunction in the backlight circuits often occurs due to a break in the power supply lines of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the soldering of their outputs, as well as the reliability of the connections in the connectors and the soldering of the conclusions of the connectors.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - SPI Flash: 25Q32BSIG; which may require replacement with new ones. If a 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).
Tuner malfunction 07-389SI3-NF4G XF-3SA-H is established after checking the software and all supply voltages at its terminals.
Attention! For users and owners of FLTV-40C10 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-40C10, Main: 40-0MS82L-MAB2LG, Panel: LVW390AUOT E2V9


To reduce the backlight current in LED drivers with the MP3394S (MP3394) controller, increase the resistance of the resistor from pin 6 (ISET) to the chassis. The maximum current in each channel (in milliamperes) for the Rset resistor (in kilo-ohms) is determined from the ratio 790 * 1.23V / (Rset + 0.4).



 The appearance of the MainBoard 40-0MS82L-MAB2LG is shown in the figure below:
40-0MS82L-MAB2LG
40-0MS82L-MAB2LG can be used in TVs:
ERISSON 39LET15 (Panel LVW390AUOT E2 V12), FUSION FLTV-40C10 (Panel T390XVN01.0 LVW390AUOT E2 V9).
The appearance of the power supply
Main features of the FUSION FLTV-40C10 device:
Installed matrix (LED panel) T390XVN01.0 LVW390AUOT E2 V9.
The matrix control uses the Timing Controller (T-CON) T390XVN01.0.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the MP3394 PWM controller. As power elements of the LED driver, keys of the AOD458 type are used.
The necessary supply voltages for all nodes of the FUSION FLTV-40C10 TV are generated by the IPE06R41 power supply module or its analogs using TEA1733, MC34063 microcircuits and power switches of the 7N65, AOD4185 type.
MainBoard - the main board (motherboard) is a 40-0MS82L-MAB2LG module using SPI Flash chips: 25Q32BSIG; and others.

Tuner 07-389SI3-NF4G XF-3SA-H provides the reception of television programs and tuning to channels.
FUSION FLTV-40C10 TV with a T390XVN01.0 LCD display, 40 "(102 cm) diagonal size in 16: 9 format. The LED-panel of this TV has LED backlighting - Edge LED. You can view images in high quality HD with Resolution 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 standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported media file formats: MP3, MPEG4, JPEG.

The power of the sound system 10 W (2x5 W) provides two speakers. It uses the NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI, USB. 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 T390XVN01.0 LVW390AUOT E2 V9 panel of the FUSION FLTV-40C10 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.