The term "KSZ80" in this context is part of the board’s silk-screen assembly number, and it should not be confused with the Microchip KSZ8081 series of Ethernet PHYs, which share a similar prefix but serve entirely different functions. Overview of the KSZ80 OB S4LV0.2 T-CON Board
Using a multimeter, technicians check for VGH (typically +20V to +30V) and VGL (typically -5V to -10V). If these are missing, the screen will likely remain blank or display a slowly fading image. Where to Source Parts
Typically includes a Samsung or Sony proprietary timing controller chip 12V (VCC), VGH, VGL, and AVDD (Analog Supply) Status Indicators ksz80 ob s4lv02 datasheet
This board is the first suspect when a TV has sound but no picture, or shows vertical/horizontal lines and distorted colors. Technical Specifications and Connectivity
Distorted or "washed out" colors are often caused by a failing Gamma IC (AS15-F or similar) which manages the reference voltages for color accuracy. The term "KSZ80" in this context is part
Surface-mount LEDs (on some revisions) to indicate power-good status Troubleshooting Common Faults
The keyword does not refer to a standalone semiconductor component like a typical Ethernet transceiver. Instead, it is the identifying marking for a T-CON (Timing Controller) board typically used in Sony BRAVIA LCD televisions, most notably the Sony KDL-40R470A Where to Source Parts Typically includes a Samsung
If you are searching for this board's datasheet to repair a faulty television, look for these common failure points:
The T-CON board acts as the "brain" of the display panel. It receives video data from the television's main logic board (via LVDS cables) and translates it into the specific timing signals required by the Source and Gate drivers to activate the individual pixels on the LCD. Used extensively in the Sony KDL-40R470A and related 40-inch LED/LCD models.
KSZ80 OB, S4LV0.2, and often secondary identifiers like LJ94-25257D LJ94-25482B