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Samsung ln46a750r1fxza tv cuts on and off, something with main board

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Posted on Jan 02, 2017

SOURCE: Samsung LCD TV Model LN46A550P3FXZA sound is cutting in & out 1-2 second intervals

Your video and audio (sound) signals are generated on the main board. However, for those circuits to work properly, they have to have clean and accurate power from the power supply board. The power supply boards are notorious for bad capacitors. Has your power supply been recapped? Do you see any bulging tops of any of the capacitors? If you are not familiar with capacitors, just google bulging capacitors. There are plenty of pictures on the web to show you what they look like. It is possible that the main you have has a problem. I assume you order the same exact part #?

Posted on Nov 12, 2013

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