Monday, 6 July 2020

REPAIR / SERVICING TV FUSION FLTV-22T9D

Technical description and composition of the FUSION FLTV-22T9D TV, panel type and applicable modules. The composition of the modules.
FUSION LED
Model: FLTV-22T9D
Chassis / Version: V1L01
Panel: HM215WU1-500
MainBoard: CV181L-A
IC MainBoard: CPU: MST6M181 / 182, main DVD AL10-M-64, CPU DVD MT1389DE, SPI Flash DVD EN25F80, laser HOP-120X
Technical Specifications FLTV-22T9D
FUSION FLTV-22T9D
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the FUSION FLTV-22T9D TV, as well as the external elements of the case. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In the absence of any signs of operability, when the FUSION FLTV-22T9D does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
If the FUSION FLTV-22T9D has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the HM215WU1-500 panel, or their power converter - LED driver. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
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.
If the motherboard CV181L-A is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Board repair and replacement of CPU chips: MST6M181 / 182, main DVD AL10-M-64, CPU DVD MT1389DE, SPI Flash DVD EN25F80, laser HOP-120X are made with the necessary equipment, and the corresponding element base. Malfunctions associated with the application of the soldering technology of the BGA processor can be localized by the heating method.
Attention to users! Self-repair of the FUSION FLTV-22T9D TV without the appropriate qualifications and experience can lead to its complete non-repairability!


FIRMWARE FOR SPI FLASH  ----------->   FUSION FLTV-22T9 V2L02, Main: CV182L_B, Panel: TB215WU3

 FIRMWARE FOR SPI FLASH  ----------->   FUSION FLTV-22T9D V1L01, Main: CV181L-A, Panel: HM215WU1-500

 The appearance of the MainBoard CV181L-A is shown in the figure below:
CV181L-A
As part of the CV181L-A motherboard, a multifunctional processor MST6M181VS is used, combined with a scaler (video controller-scaler). It is advisable to start the MainBoard repair by checking the power supply of the Stand-by mode, which is implemented using a separate 3.3V linear stabilizer. In the operating mode, it is necessary to check the operability of linear stabilizers or voltage converters necessary to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. A voltage of 2.5 V is required to power the DDR W9425G6JH-4 random access memory. If there is no image, but the display backlight is working properly, it is advisable to measure the power of the 5V or 12V LCD panel, depending on the type of panel used, directly on the LVDS connector. If the TV does not exit Stand-by mode, does not respond to the remote control and control buttons, you should check the 3.3V power at pin 8 of the SPI FLASH chip, it may be necessary to update its software.
CV181L-A can be used in TVs:
FUSION FLTV-19T9D (Panel TB190B1Z1), FUSION FLTV-22T9D (Panel HM215WU1-500), HYUNDAI H-LED22V16 (Panel M215HW01 V.B), HYUNDAI H-LED15V6 (Panel LP156WD1 (TL)(A1)), SUPRA STV-LC2277FLD (Panel HK215LEDM-BH 1H), SUPRA STV-LC2425WL (Panel M240HW02 V.1), SUPRA STV-LC1677WL (Panel 720p HD 1366x768).
Main features of the FUSION FLTV-22T9D device:
Installed matrix (LED-panel) HM215WU1-500.
The required supply voltage for all nodes of the TV FUSION FLTV-22T9D provides a switching power supply.
MainBoard - the main board (motherboard) is a CV181L-A module using CPU chips: MST6M181 / 182, main DVD AL10-M-64, CPU DVD MT1389DE, SPI Flash DVD EN25F80, laser HOP-120X and others.
Additional technical information about the panel:
Brand: BOE
Model: HM215WU1-500
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 200 cd / m²
Contrast Ratio: 600: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 16S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
FUSION FLTV-22T9D TV with HM215WU1-500 LCD, 22 "(56 cm) diagonal size of 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. Dynamic contrast ratio of 20,000: 1 is achieved by special control of the LEDs. The LED-panel of this TV is equipped with an end LED backlight - 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 graphic decomposition 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 formats multimedia files: MP3, WMA, MPEG4, VideoCD, SVCD, JPEG.
The power of the acoustic system of sound 6 W (2x3 W) provide 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, SCART, VGA, 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.
The power consumed by the TV working in the network mode is 40 watts.
Overall dimensions: without stand 533x402x55 mm.
Mass of the TV: without stand: 4.8 kg.
Attention! The HM215WU1-500 panel of the FUSION FLTV-22T9D 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.