I did and found this: http://www.howtomendit.com/answers.php?id=91281
Now, that may or may not be the cause of your particular problem, but its a good place to start looking.
Maplins is a pretty good high street supplier or there's always ebay
XXX
February 2016
A component - probably in the power supply - is failing with a heat-related fault.
As for what you can do about it - you probably do not have the confidence or experience to repair it yourself so you can ask a third-party or else abandon the set for a new one.
Good Luck...
February 2016
I can answer this question...
How do i fix my Sylvania LCD color TV Model #SSL2006?