Technical description and composition of the FUSION FLTV-28K62 TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-28K62
Chassis / Version: TP.VST59.P8B / V1N08
Panel: ST2751A01-4
T-CON: MT3151A05-3-XC-1
LED driver (backlight): integrated into MainBoard
PWM LED driver: LD5850GS
MOSFET LED driver: ME15N10
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: 7N65L
MainBoard: TP.VST59.P8B
IC MainBoard: TSUMV59XE-Z1; SPI Flash: 25Q32, ATML 24C04 TPA3110LD2
Tuner: NoName
Technical Specifications FLTV-28K62
FUSION FLTV-28K62
General repair guidelines for TV LCD LED
Possible manifestations of defects
- FUSION FLTV-28K62 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
The malfunction in such cases should be sought in the elements of the power source - mains voltage converter (AC / DC), which is located on the MainBoard TP.VST59.P8B main board. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches (7N65L) of the converters and rectifier diodes for a short circuit probability.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse 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 SOT23-6 PWM chips are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
Failure in most such cases is detected in the nodes and backlight elements of the LED panel. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to identify a break in the LED lines, it should be borne in mind 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.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the TP.VST59.P8B 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). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its TSUMV59XE-Z1 chips; SPI Flash: 25Q32, ATML 24C04 TPA3110LD2 and other possible malfunctioning components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If a NoName tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding tuner pins.
It should be remembered! Attempts to independently repair the FUSION FLTV-28K62 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-28K62, Main: TP.VST59.P8B, Panel: ST2751A01-4
The appearance of MainBoard TP.VST59.P8B is shown in the figure below:TP.VST59.P8B
TP.VST59.P8B can be used in TVs:
FUSION FLTV-32K62 (Panel LC320DXJ (SF)(E1)), FUSION FLTV-28K62 (Panel ST2751A01-4), THOMSON T32ED07U-01B (Panel LC320DXE (SF)(R1) ).
Main features of the FUSION FLTV-28K62 device:
Installed matrix (LED panel) ST2751A01-4.
The matrix control uses the Timing Controller (T-CON) MT3151A05-3-XC-1.
To power the backlight LEDs, a converter is used, combined with the main board TP.VST59.P8B, controlled by the LD5850GS PWM controller. As the power elements of the LED driver, keys of the type ME15N10 are used.
The power module is combined with the MainBoard and is designed according to a flyback AC / DC voltage converter using PWM SOT23-6 microcircuits and power switches of the 7N65L type.
MainBoard - the main board (motherboard) is a TP.VST59.P8B module, using TSUMV59XE-Z1 chips; SPI Flash: 25Q32, ATML 24C04 TPA3110LD2 and others.
The NoName tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CSOT
Model: ST2751A01-4
Type: a-Si TFT-LCD, CELL
Diagonal size: 27.5 inch
Resolution: 1366x768, WXGA
Display Mode: HVA, Normally Black, Transmissive
Active Area: 607.528x345.024 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 7.2% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 62%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
The FUSION FLTV-28K62 TV with an ST2751A01-4 LCD display, a diagonal size of 28 "(71 cm) in 16: 9 format. Dynamic contrast ratio of 80,000: 1 is achieved by special control of the LEDs. The LED panel of this TV has LED backlighting - Edge LED: You can view images in high quality 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 standards 480i , 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system 10 W (2x5 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), SCART, 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, 1360x768.
Overall dimensions: 710x490x170 mm.
Attention! The ST2751A01-4 panel of the FUSION FLTV-28K62 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.