Technical description and composition of the FUSION FLTV-22LF31B TV, panel type and applicable modules. The composition of the modules.FUSION LED
Model: FLTV-22LF31B
Chassis / Version: V2N02
Panel: LC215DT5A
LED backlight: RF-HK215B14-1504S-04
T-CON: RUNTK0001ZEP2
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
Power Supply (PSU): HKL-240101
PWM Power: OB2273 (PWM SOT23-6)
MOSFET Power: 7N65FB
MainBoard: CV59L-E
IC MainBoard: CPU: TSUMV59XU-Z1 EEPROM: 24Q32
Tuner: CDT-3NP5I1-10
Technical Specifications FLTV-22LF31B
FUSION FLTV-22LF31B
General repair guidelines for TV LCD LED
Possible manifestations of defects
- FUSION FLTV-22LF31B 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.
In such cases, the HKL-240101 power supply is usually faulty. It is necessary to measure its output supply voltages, and in case of their absence, check the operability of the power switches (7N65FB) of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) OB2273 (PWM SOT23-6), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
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 detect a break in the line of LEDs without disassembling the panel with a simple multimeter. LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED if you connect probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The indicator blinks or lights up constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the CV59L-E 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). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - CPU: TSUMV59XU-Z1 EEPROM: 24Q32. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If you suspect a malfunction of the CDT-3NP5I1-10 tuner, first of all, you need 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 terminals of the tuner.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
FLASH FUSION FLTV-22LF31B V2N02, Main: CV59L-E, Panel: HK215WLEDM // LC215DT5A
The appearance of the MainBoard CV59L-E is shown in the figure below:The MainBoard CV59L-E uses a multifunctional microprocessor type TSUMV59 with an integrated scaler and an external SPI Flash ROM type 25Q32 (4Mb).
It is advisable to start the repair of the motherboard by checking the + 5V voltage converters and the + 1.2V processor core power, as well as the + 3.3V linear voltage regulators and the 1.8V DDRAM processor internal RAM.
In the case of a working display backlight and no image, it is necessary to check the power of the panel (depending on the type, + 5V or + 12V), which can be measured directly on the LVDS connector. If, in the presence of all the supply voltages, the TV does not enter the operating mode, does not respond to the Remote Control and control buttons, the SPI Flash software should be updated.
CV59L-E can be used in TVs:
FUSION FLTV-24L31B (Panel V236BK1-LE1 REV.C5), FUSION FLTV-22L31B (Panel LC215DT5A), SUPRA STV-LC24500WL (Panel V236BJ1-LE1 Rev.C2), SUPRA STV-LC22500FL (Panel LC215DT5A / HK215WLEDM-DH67H).
The appearance of the power supply
Main features of the FUSION FLTV-22LF31B device:
Installed matrix (LED panel) LC215DT5A.
The matrix control uses the Timing Controller (T-CON) RUNTK0001ZEP2.
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-22LF31B TV are generated by the HKL-240101 power supply module or its analogs using OB2273 microcircuits (PWM SOT23-6) and 7N65FB type power switches.
MainBoard - the main board (motherboard) is a CV59L-E module using CPU chips: TSUMV59XU-Z1 EEPROM: 24Q32 and others.
The tuner CDT-3NP5I1-10 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: PANDA
Model: LC215DT5A
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 600: 1
Display Colors: 16.7M (8-bit)
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
FUSION FLTV-22LF31B TV with LC215DT5A LCD display, diagonal size 22 "(56 cm) in 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. V The LED panels of this TV are equipped with edge LED backlighting - Edge LED.The design and technical capabilities of the TV include viewing 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 can be processed in analog 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 30 watts.
Overall dimensions: with stand 518x369x160 mm, without stand 518x321x74 mm.
TV Weight: with stand: 2.68 kg, without stand: 2.08 kg.
Attention! The LC215DT5A panel of the FUSION FLTV-22LF31B 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.