Features an on-chip LDO regulator that generates the 1.2V core voltage.
You can find these boards at specialized retailers such as Great Bharat Spares or Harry Electronics . Sony Kdl-40r450a Video Logic Board Ksz80 OB S4lv0.2 - eBay
The backlight is on, and sound works, but there is no image. Vertical Lines: Flickering or static colored lines across the display.