You could always start by letting us know what the problem actually IS!!!!!!!
You could search Google for - say - make model and two or three words to describe the symptoms.
Say "Technika LCD 40-270 Flickering screen and no audio" or maybe "Technika LCD 40-270 no sound"
You should see results fairly quickly. Maybe stuff like:
https://www.youtube.com/watch?v=QXFWKjNZu2U
http://www.badcaps.net/forum/showthread.php?t=43810
XXX
December 2015