I have a Seiki SC-40FK700N TV with what appears to me to be dim backlighting along the top 1/3 of the screen. The lower portion of the screen appears as normal, but about 2 weeks ago the top suddenly went dim; it's still readable, but dim.
I don't know how many LED strips this TV has. I would appreciate any troubleshooting suggestions such as what nominal voltages I should see where. If it does turn out to be a bad LED strip, should they all be replaced while I'm in there?
While I do have plenty of experience dismantling, repairing and assembling medical devices and computers, I have never worked on a LED TV. After watching some backlight repair videos, it looks rather straight forward.
I think that I can find LED strips for ~$15/ea or so, so it may worth fixing this set. Thanks for any help.