Technical description and composition of the FUSION FLTV-24LF31B TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-24LF31B
Chassis / Version: T.VST59.11
Panel: HK236WLEDM-BH56H
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
Power Supply (PSU): HKL-240101
PWM Power: OB2273 (PWM SOT23-6)
MainBoard: T.VST59.11
IC MainBoard: CPU: TSUMV59XE-Z1; SPI Flash: GD25Q32;
Technical Specifications FLTV-24LF31B
FUSION FLTV-24LF31B
General repair guidelines for TV LCD LED
An external examination of the external and internal elements should be carried out in a timely manner before the start of dismantling operations. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, there is not the slightest sign of operability - the most likely malfunction is in the power module. 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.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If the FUSION FLTV-24LF31B lacks an image but has sound, the HK236WLEDM-BH56H panel backlight LEDs or their power converter may malfunction.
In most cases of lack of backlight, there is a need 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.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the LED will light up slightly.
The motherboard T.VST59.11 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power stabilizers of the microcircuit are working, a software update may be necessary.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - CPU: TSUMV59XE-Z1; SPI Flash: GD25Q32; which may require replacement with new ones. If the 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).
Once again, remind users! Attempts to independently repair the FUSION FLTV-24LF31B TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> FUSION FLTV-24LF31B, Main: T.VST59.11, Panel: HK236WLEDM-BH56H
The appearance of MainBoard T.VST59.11 is shown in the figure below:T.VST59.11
It is advisable to start the repair of the T.VST59.11 motherboard, made on the basis of the TSUMV59Xxx multifunction processor, by checking the operability of the linear voltage stabilizers or converters necessary to provide power to the processor nodes - 1.2V core power, DDR 1.8V memory and Stand-by 3.3V mode . If there is no image, but if the display backlight is working properly, you should check the power supply voltage of the LCD panel 5V or 12V, depending on the type of panel used.
T.VST59.11 can be used on TVs:
SUPRA STV-LC19500WL (Panel HK185WLDEM-HH76H), FUSION FLTV-19L31B (Panel HK185WLEDM-HH75H), FUSION FLTV-22L31B (Panel LC215DT5A), SUPRA STV-LC24500FL (Panel 1080p Full HD 1920x1080), FUSION FLTV-24LF31B (Panel HK236WLEDM-BH56H).
The appearance of the power supply
Main features of the FUSION FLTV-24LF31B device:
The matrix (LED panel) HK236WLEDM-BH56H is installed.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OB3350CP PWM controller.
The necessary supply voltages for all nodes of the FUSION FLTV-24LF31B TV are generated by the HKL-240101 power module or its analogs using OB2273 microcircuits (PWM SOT23-6).
MainBoard - the main board (motherboard) is a T.VST59.11 module, using CPU chips: TSUMV59XE-Z1; SPI Flash: GD25Q32; and others.
FUSION FLTV-24LF31B TV with HK236WLEDM-BH56H LCD, 24 "(61 cm) diagonal size of 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 60,000: 1 is achieved by special control of the LEDs The LED-panel of this TV has end-face LED backlighting - Edge LED.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal may can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, JPEG.
The power of the acoustic system of sound 6 W (2x3 W) provide 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), AV, SCART, RGB, 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, 1920x1080.
The power consumed by the TV working in the network mode is 40 watts.
Dimensions: with stand 562x394x160 mm, without stand 562x347x74 mm.
TV Weight: with stand: 2.97 kg, without stand: 2.37 kg.
Attention! The HK236WLEDM-BH56H panel of the FUSION FLTV-24LF31B 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.