Technical description and composition of the ERISSON 19LEJ10 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 19LEJ10
Chassis / Version: CVMV26L-B-20
Panel: 720p HD, 1366x768
MainBoard: CVMV26L-B-20
IC MainBoard: CPU: TSUMV26KE-LF; SPI Flash: 25F40;
Tuner: F21WT-3BAR-E
Specifications 19LEJ10
ERISSON 19LEJ10
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 inspect all the internal elements of the CVMV26L-B-20 chassis, as well as the external chassis. In some cases, visible external damage to the elements can indicate the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of electronic circuit nodes. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Malfunctions of the power module can be expressed in different ways, for example, ERISSON 19LEJ10 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If there is no image when ERISSON 19LEJ10 is turned on, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (LED driver) 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 disabling protection in order to diagnose a malfunction, there is always a risk of failure of the power elements of the LED driver. After repair, it is necessary to restore all standard converter protection circuits.
In cases of attempts to repair the CVMV26L-B-20 motherboard, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating. Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: TSUMV26KE-LF; SPI Flash: 25F40; and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
It should be remembered! Attempts to repair the ERISSON 19LEJ10 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 -----------> ERISSON 19LEJ10, Main: CVMV26L-B-20
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 ERISSON 19LEJ10 device:
Installed matrix (LED-panel) 720p HD, 1366x768.
The required supply voltage for all nodes of the TV ERISSON 19LEJ10 provides a switching power supply.
MainBoard - the main board (motherboard) is a CVMV26L-B-20 module, using CPU chips: TSUMV26KE-LF; SPI Flash: 25F40; and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
ERISSON 19LEJ10 TV with an LCD display of 720p, 19 "(48 cm) diagonal size in 16: 9 format. 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 standard 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 the standards 480i, 480p, 576i, 576p, 720p, 1080i. Stereo sound is realized by two built-in speakers. zuetsya NICAM STEREO audio processing system.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), S-Video, VGA. 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.
The power consumed by the TV in the operating mode from the network is 30 watts.
Overall dimensions: With a support of 605x465x210 mm, Without a support of 605x405x93 mm.
Attention! The 720p HD, 1366x768 panel of an ERISSON 19LEJ10 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.