Technical description and composition of the ERISSON 20LK15 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 20LK15
Chassis / Version: MST6M58-T6S
Panel: 720p HD, 1366x768
MainBoard: MST6M58-T6 S
IC MainBoard: MST6M58FQP-LF-Z1, EN25B64-100FIP, FM24C64, A3R12E4JFF, MP1482DS, SA7454
Tuner: CDT-3FP2I2-31
Specifications 20LK15
ERISSON 20LK15
General recommendations for repairing TV LCD
Repair and diagnostics of any electronic device, in particular ERISSON with the MST6M58-T6S chassis, it is advisable to start with a careful external examination of internal and external elements. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
If the ERISSON 20LK15 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. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
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 verified by replacing it with a known good one.
If the ERISSON 20LK15 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors. All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
The MST6M58-T6S motherboard is subject to verification if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. If it is not possible to replace the MB board (SSB), you need to check the health of its elements - SPI Flash: EN25B64; . Defective components should be replaced.
Attention to the owners! Attempts to repair the TV ERISSON 20LK15 on its own are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> ERISSON 20LK15 , Main: MST6M58-T6S, Panel: 720p HD, 1366x768
The appearance of the MainBoard MST6M58-T6 is shown in the figure below:MST6M58-T6
MST6M58-T6 can be used in TVs:
ERISSON 19LK20 (Panel 720p HD 1366x768), ERISSON 20LK15 (Panel 720p HD 1366x768), ERISSON 23LK20 (Panel LM230WF1 (TL)(F3)).
Main features of the ERISSON 20LK15 device:
Installed matrix (LCD panel) 720p HD, 1366x768.
The required supply voltage for all nodes of the TV ERISSON 20LK15 provides a switching power supply.
MainBoard - the main board (motherboard) is an MST6M58-T6 module, using chips MST6M58FQP-LF-Z1, EN25B64-100FIP, FM24C64, A3R12E4JFF, MP1482DS, SA7454 and others.
The tuner CDT-3FP2I2-31 provides the reception of television programs and tuning to channels.
Trademark: ERISSON, Model: 20LK15.
Shortly from the TV: LCD, 720p HD, diagonal of 20 "(51 cm), HDMI: 2, USB.
The composition uses MainBoard MST6M58-T6 S and an LCD panel (matrix) 720p HD, 1366x768.
ERISSON 20LK15 TV with an LCD display of 720p, diagonal size 20 "(51 cm) in 16: 9 format. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). Input high-frequency or video signal 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, MPEG4, MKV, JPEG. Stereo audio is implemented with two built-in speakers using a processing system Ki audio NICAM STEREO.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, audio x4, S-Video, component, VGA, HDMI x2, 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.
Overall dimensions: With a support of 605x465x210 mm, Without a support of 605x405x93 mm.
Attention! The 720p HD, 1366x768 panel of an ERISSON 20LK15 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!