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I have a Samsung SP53J5HFX/VW TV. After having a problem with turning ON the TV (when I tried to turn ON, the green light blinked once, there was a click of relay, but nothing happened and the screen remained black), two of your experts suggested replacement of the two STK's. I have ordered and received them. I have today replaced these STK's, and the situation now is as follows: When I try to turn ON the TV, the LED at the front panel turns on red, instead of green as it should be in a normal situation. There is no response whatsoever from pressing of the buttons at the front panel. I carefully checked all the fuses, and resistors, and all of them look OK. Any idea how to solve the problem?

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  • zadokf Feb 05, 2010

    I have a Samsung SP53J5HFX/VW TV. After having a problem with turning ON the TV (when I tried to turn ON, the green light blinked once, there was a click of relay, but nothing happened and the screen remained black), two of your experts suggested replacement of the two STK's. I have ordered and received them. I have today replaced these STK's, and the situation now is as follows: When I try to turn ON the TV, the LED at the front panel turns on red, instead of green as it should be in a normal situation. There is no response whatsoever from pressing of the buttons at the front panel. I carefully checked all the fuses, and resistors, and all of them look OK. Any idea how to solve the problem?

  • zadokf Feb 05, 2010

    Dear Whecomjee:

    I have the schematics. Please note that there is no "click" from the relay, and the "standby" does not turn ON, as normally in standby the led at the front is GREEN (while now it lights in RED upon turning ON the main ON-OFF button). Is it correct that you suggest checking whether there is a 120V DC at the output of the power supply? Does this 120V voltage appear even in standby? Please note that it seems very hard to check this voltage, as the access is very hard, and there is no specific test point....

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Hi,
Please check power supply section and make sure 120V are coming from main power supply.
Relay clicks on pressing power button shows standby power supply is working but main power supply does not turn on for some reason.
Do you have schematics of this TV to test power supply output volts?
Thanks.


Posted on Feb 05, 2010

  • Shahid Electronics
    Shahid Electronics Feb 05, 2010

    At least you should reply questions about power supply output and service manual as that would help me to solve your problem.
    Any way, good luck.



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