The KSZ80_0B_S4LV0.2 acts as the bridge between the TV's main logic board and the LCD panel, managing the timing and voltage required for pixel display.
Often features chips like the RT6503A or BM81204. Ksz80 Ob S4lv0.2 Datasheet
Sony Kdl-40r450a Video Logic Board Ksz80 OB S4lv0. 2 for sale online | eBay. Placa V-com Tv Sony Kdl40r485a Ksz80-ob-s4lv0.2 The KSZ80_0B_S4LV0
For technicians looking to repair a "No Display" or "Blank Screen" issue where the backlight is functional, checking specific test points on the board is essential. 12V. Logic Voltage: 3.3V. 2 for sale online | eBay
Designed for 40-inch panels, such as the S400DH. Major Compatible Sony Models: KDL-40R470A KDL-40R450A KDL-40R473A KDL-40R485A Operational Voltages and Troubleshooting
This can sometimes be temporarily bypassed by "tape-off" methods or cutting specific signal tracks (CKV1, CKV2, CKVB1, CKVB2, and STVP) on the T-Con/Scaler board.