I took a meter to those pads and it had 75 ohms resistance. It looks like the board is populated at the factory with all the discreet components but the more expensive components are missing.
This is what I discovered about TV out on my NIC1. This is mostly educated guesses from my own research on my model
The board has 'V3.1A' in the corner
CN2 is for composite video out
My BIOS has TV OUT settings
JP8 is for SVIDEO out 1=GND 2=GND 3=Y(LUMINENCE) 4=C(CHROMA) most likely a header. This goes to a 4 pin mini DIN chassis mount (like Digi-key 275-1101-ND or CP2640-ND) screwed to the modem board bracket empty hole. The 'rabbit ears' icon/knockout on the back is for this.
U402 padwork is for a Chrontel 7002 VGA to TV ASIC (Again, I assume this because it is the only TV chip that fits the pad pins for GND's, Power, etc. JP8 pinouts are derived from here.
U401 is unknown at this time. I think it is for sync, I don't remember right now. I think the only 74 or 4000 series chip that would conform to the pad wiring is a hex buffer or hex inverter but the resulting circuit doesn't really make sense.
I stumbled on this message board while looking for stylistic info. When I looked on the net before I couldn't find much but I was looking for motherboard docs. Thanks, hopefully I can find some useful info here.
If someone has a NIC model with the actual factory installed TV out system I would like to have the numbers off of their U401 & U402 IC's
Mr Moor
