Samsung forum


screen flickers is USB is NOT plugged in. LN46b630

by tyrexden / May 12, 2012 6:46 AM PDT

on the The screen, no matter what input is being watch, will flicker if i don't have a USB drive plugged to the HD USB port.... If i remove a particular drive, or even plug in an alternate drive, the screen starts to flicker... I can hear a faint high pitch whir in the black when this is happening, But as soon as i plug in the good drive, the flickering and pitch noise go away. Its almost as if the board 'remembers' the particular drive, and no requires it to be plugged in.

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All Answers

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by tyrexden / May 12, 2012 8:02 PM PDT

so i've opened a service request under 4114811886. With the registering of the product, i got an additional 3 month warranty, but i'm getting conflicting information about if the service will be covered. How do i ensure Samsung does the repair for free? Thank you. i'm uploading a video of the problem and will post the link here shortly.

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by tyrexden / May 13, 2012 2:56 AM PDT

I've also filled out the support form on the Facebook page. Video of the issue can be seen at

Will Samsung honor the additional 3 month warranty after registering the product. I really love Samsung, having other products as well, but this set should work more than a couple of years.

I have seen other multiple threads, including where people have had success on a similar model, the LN46C630, (rather than the B630), by cutting a simple jumper (JP852) on the board which instantly solves the problem, a known bulletin that Samsung sent out to reps, however, i checked, and my board looks different from the C630 so i decided not to hold off and wait to hear from Samsung first.

Any other recommendations to escalate with Samsung would be appreciated.

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by tyrexden / May 16, 2012 1:55 PM PDT

Well, Samsung wouldn't do the fix, and the authorized service center offered to fix for $175. I figured that was a cheap price, and thus most of it would probably be going to his labor cost.... Hence, i figured the part he was going to replace would be relatively cheap... I opened the set, and saw 3 capicators on the power board that looked faulty... They hadn't burst, but they were bulging at the top....

Armed with less than $10 of new capicators, and a soldering iron, i did the fix myself.
Everythings perfect now... In fact, i'm glad Samsung turned me down, because it allowed me to research and learn a new skill.

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