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I have a Samsung PS63C7000YF, with no Va voltage and 15v on

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the Vs. The screen does...
I have a Samsung PS63C7000YF, with no Va voltage and 15v on the Vs. The screen does not work but the sound works. Also the led on logic board is not flashing. Any ideas?
Submitted: 2 years ago.Category: TV
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Answered in 2 hours by:
7/11/2015
TV Technician: TV Tech1, Technician replied 2 years ago
TV Tech1
TV Tech1, Technician
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Experience: 30 Years experience. Authorized Warranty servicer.
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Unplug the boards on the left and right sides from the power supply board and see if the Logic board flashes once a second. Usually that light is supposed to do that, but the power supply and X or Y main boards may be sending a shutdown command to the logic board. Removing power may get that light to start flashing IMPORTANT!<a href="http://imgur.com/ZmTAPr8"><img src="http://i.imgur.com/ZmTAPr8.jpg" title="source: imgur.com" /></a> <a href="http://imgur.com/ZmTAPr8"><img src="http://i.imgur.com/ZmTAPr8.jpg" title="source: imgur.com" /></a>
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Customer reply replied 2 years ago
I have removed power cable and ribbon cables, together and seperatly to X and Y boards and still the same, voltages do not change even for a split second at the start. I tried disconnecting logic board and the TV would not fire up at all. As in no sound or clicks.
TV Technician: TV Tech1, Technician replied 2 years ago
Yeah the Logic and Main board require power and communication at all times. If not, there's no communication to the X and Y main, which is NOT a necessity. What we're testing is the POWER board, seeing if Vs comes alive -That tells us the power supply did not die on us. THEN we check the Vs pins on the X and Ymains for shorts next. Also we want that logic board blinking.So...right now it sounds like your meter isn't reading ANY dc voltage on the power supply board, right? You should have that with the main and logic board connected, you should see the logic board blink and you should hear any power relay click on and off.If it doesn't...we need to check the main board's PS-ON line and the VS-on lines -- see picture. <a href="http://imgur.com/dMjAI7L"><img src="http://i.imgur.com/dMjAI7L.jpg" title="source: imgur.com" /></a>
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Customer reply replied 2 years ago
Ok will check and get back to you
TV Technician: TV Tech1, Technician replied 2 years ago
OK I'll wait for your response back
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