Technical description and composition of the FUSION FLTV-15W7 TV, type of panel and applicable modules. The composition of the modules.
FUSION LED
Model: FLTV-15W7
Chassis / Version: CVMV26L-B-20
Panel: LTN156AT05
LED backlight: MB6_WLED_FPCV5.0 1607J
T-CON: LTN156MB6WLEDV1.2 HF
Power Supply (PSU): KPA-060F Adapter 12V 5A
MainBoard: CVMV26L-B-20
IC MainBoard: CPU: TSUMV26KE-LF; SPI Flash: 25F40, EEPROM: 24C32, Audio: TDA1517P
Tuner: F21WT-3BAR-E
Technical Specifications FLTV-15W7
FUSION FLTV-15W7
General repair guidelines for TV LCD LED
Possible malfunctions
- The FUSION FLTV-15W7 TV does not turn on and does not show any signs of turning on, does not respond to the control buttons or to the remote control.
Usually with such manifestations, the defect is caused by faulty elements in the main power module KPA-060F.
The owner of a TV can purchase an external power supply unit such as KPA-060F and repairing it is not always advisable. In any case, the simplest typical defects characteristic of most IIP schemes can be easily detected and eliminated after opening. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits are usually checked by replacement with new ones, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
As a rule, in such cases there is no display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the CVMV26L-B-20 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). If it is not possible to replace the MB (SSB) card, you must check the health of its elements - CPU: TSUMV26KE-LF; SPI Flash: 25F40, EEPROM: 24C32, Audio: TDA1517P. Defective components should be replaced.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the F21WT-3BAR-E tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Owners of the FLTV-15W7 TV are recommended for repairing contact only qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
FIRMWARE FOR SPI FLASH -----------> EEPROM FUSION FLTV-15W7, Main: CVMV26L-B-20, Panel: LTN156AT05
The appearance of the MainBoard CVMV26L-B-20 is shown in the figure below:
CVMV26L-B-20
CVMV26L-B-20 can be used in TVs:
ERISSON 19LEJ02 (Panel LM185WH2 (TL)(A1)), ERISSON 19LEJ10 (Panel 720p HD 1366x768), FUSION FLTV-15W7 (Panel LTN156AT05), HYUNDAI H-LEDVD24V2 (Panel M236MWF1), HYUNDAI H-LEDVD22V2 (Panel M215H1-L01), SUPRA STV-LC2225WL (Panel MT215DW01 V.1), SUPRA STV-LC2425WL STV-LC2225WL (Panel M236MWF1 M216H1-L01), SUPRA STV-LC1925WL (Panel MT185GW01 V.1), SUPRA STV-LC1925W (Panel MT185GW01 V.1), SUPRA STV-LC22390FD (Panel HM215WU1-300), SUPRA STV-LC2244FL (Panel MT215DW02 V.0).
The appearance of the power supply
Main features of the FUSION FLTV-15W7 device:
Installed matrix (LED-panel) LTN156AT05.
The matrix control uses the Timing Controller (T-CON).
To power all the internal nodes of the FUSION FLTV-15W7 TV, an external source of the KPA-060F Adapter 12V 5A type is used.
MainBoard - the main board (motherboard) is a CVMV26L-B-20 module, using CPU chips: TSUMV26KE-LF; SPI Flash: 25F40, EEPROM: 24C32, Audio: TDA1517P and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTN156AT05-J08
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Display Colors: 262K (6-bit)
Frequency: 60Hz
Lamp Type: WLED
Signal Interface: LVDS (1 ch, 6-bit)