@nalutorr to bad you already took the boards out :-). Anyhow this "there is no standby light" is the power board. No matter what, if you do not have the power LED indicate that you have standby voltage, it's your power board. Samsung had a run of bad IC's and MOSFETS on these boards. If it would be my TV I'd start with that.
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The blinking and flickering it did before could be the backlight strips but it could also have been the power board all along.
@nalutorr to bad you already took the boards out :-). Anyhow this "there is no standby light" is the power board. No matter what, if you do not have the power LED indicate that you have standby voltage, it's your power board. Samsung had a run of bad IC's and MOSFETS on these boards. If it would be my TV I'd start with that.