We installed a 5 series range a few months ago. It had blue lights shinning down on knobs. I flipped a switch the other day and it turned lights off. Now they're white? How do I get them back blue?

SOURCE: Once Standby mode shut down Monitor will not operate for a few days

Problem is maybe caused by electrolytic capacitors in PSU you can inspect them visualy if their top is blown then they are defective you can easily replace them.
Good luck.

SOURCE: TrekStor 160gb Harddrive wont turn on

Try to turn it off and quickly turn it on again in a split second.

And buy a second hard disk just in case.

SOURCE: T.V. TURNING OFF AFTER ABOUT 5 MINUTES.

Go to Samsung.com for solution. There is a switch that just needs to be repositioned behind access door on rear. Fixed my HL-S5086W ok.

SOURCE: Samsung LN-S4692D - Vertical lines (>15) & static on screen

this sounds like a scan board gone ,, if you check ebay youll see two things,
1, other tvs for sale with the same fault (It might give you a clue to the fault ie , which board )
2, the same tv as yours with a broken screen ,

i dont know how good you are with taking things to bits but i personally would buy the tv with the broken screen and start swapping over the internal boards ?

Have you checked your home insurance policy for broken tv,s
it may have fell of its stand when you were'nt looking?

SOURCE: Sylvania LD320SSX turns off by itself.

your powersupply is dying in the set.. have it checked..