Monday, 4 May 2020

REPAIR / SERVICING TV FUSION FLTV-22W7

Technical description and composition of the FUSION FLTV-22W7 TV, panel type and applicable modules. The composition of the modules.
Fusion
Model: FLTV-22W7
Chassis / Version: CVMV26L-B
Panel: 1080p Full HD, 1920x1080
MainBoard: CVMV26L-B
IC MainBoard: CPU: TSUMV26KE-LF; EEPROM: 25F40;
Tuner: F21WT-3BAR-E
Technical Specifications FLTV-22W7
FUSION FLTV-22W7
General recommendations for repairing TV LCD
Diagnostics of malfunctions and repairs of the FUSION FLTV-22W7, as well as other electronic devices, is recommended to begin with an external examination of the external and internal elements. Many visible changes in the state of the elements make it possible to determine the future direction of the troubleshooting. Experienced repairmen are well aware of how ring cracks in soldered terminals look, swollen capacitors, and other causes of problems in electronic devices.
If the FUSION FLTV-22W7 does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator 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 cut off 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.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If there is no image when you turn on the FUSION FLTV-22W7, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit. It should be remembered that when the protection is turned off in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repair, it is necessary to restore all standard converter protection circuits.
On the CVMV26L-B motherboard, in case of a malfunction, you should first check the operation of all the stabilizers and power converters of the microcircuits, and also, if necessary, update the software (software). In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - CPU: TSUMV26KE-LF; EEPROM: 25F40; which may require replacement with new ones. If a 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).

Attention! For users and owners of FLTV-22W7 TVs who do not have the appropriate qualifications, knowledge and experience, we strongly do not recommend attempts to self-repair in order to avoid negative consequences that can lead to complete non-repairability of the device.


FIRMWARE FOR SPI FLASH  ----------->   FUSION FLTV-22W7, Main: CVMV26L-B, Panel: 1080p Full HD, 1920x1080

 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).
Main features of the FUSION FLTV-22W7 device:
Installed matrix (LCD panel) 1080p Full HD, 1920x1080.
The required supply voltage for all nodes of the FUSION FLTV-22W7 TV provides a switching power supply.
MainBoard - the main board (motherboard) is a CVMV26L-B module, using CPU chips: TSUMV26KE-LF; EEPROM: 25F40; and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
FUSION FLTV-22W7 TV with a 1080p LCD display, 22 "(56 cm) diagonal size in 16: 9 format. 250 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. 3200: 1 dynamic contrast is provided by special control of operation 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 decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be It is processed in the analog PAL, SECAM system, NTSC. Graphic processing and formation takes place in the digital signal standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
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, audio x2, component, SCART, RGB, VGA, HDMI. 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, 1280x1024, 1360x768, 1920x1080.
The power consumed by the TV working in the network mode is 65 watts.
Overall dimensions: with stand 530x388x200 mm, without stand 530x340x49 mm.
The mass of the TV: 3.9 kg.
Attention! The 1080p Full HD, 1920x1080 panel of the FUSION FLTV-22W7 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!