Samsung C300 LCD screen is going off and on?
Sometimes the screen goes off and sometimes it has lines across.
Repair guides and teardowns for many Samsung older cell phones. This category is for phones not using an Android or Windows operating system.
there are a few possible problems that can cause this.
most likely it's the flex cable that connects the 2 phone parts
but i had a samsung with similar problems - the glass of the front housing was becoming loose and that caused some flickering and on/off problems