Technika 40" LED TV standby led 7 times flashing

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  • bolob
    New Member
    • Mar 2019
    • 5
    • Hungary
    #1

    Technika 40" LED TV standby led 7 times flashing

    Hi Guys,

    I have a 40" Technika LED TV (Tesco brand) using the 17IPS20 -R6 PSU. Few days ago the problem started with the TV, no picture, but sound still it had. (I haven't seen this condition my wife told me) so I am not sure the backlight went off, or there was no video as well that time). She tried to power off and on, but after sound also disappeared. The current condition , after connecting the plug to the main, the red standby led flashing 7 times and after going to be off. It didn't try to switch on the backlight, also no electrical sounds coming form any transformers/coils. I was checking all the diodes, and transistors, I couldn't find any shorted or broken one. Any advice with this would be highly appreciated. In the above described condition, should the board supply any voltage for the LED strips ? Is there any sense to check the voltage in the connector of the backlight ? Or what is the easiest way to identify, the problem with the board or with the backlight itself ?

    Thanks in advance,
    Br,
    /bolob
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