Hacking an RS-170 tap into a B&W TV set?

--- On Mon, 5/31/10, Fred Cisin <cisin at xenosoft.com> wrote: Yeah. He's trying to hack video into a set based around an AN1515 chip. It contains pretty much most of the transistors in the set all in one chip. You can pipe video directly into the video output transistor, but you won't have any sync. It's a tricky problem that I actually sorted out a couple weeks ago myself. Basically, you cut off the the input from pins 1 and 28, then sever the video output at the base of the video output transistor and feed in your video signal there. Then detach the set's circuitry from the sync separator input (pin 6) and feed composite video into the chip there. I was only able to figure it out because I found the datasheet for the chip on the 'net. I was unable to find the schematic for the television. The set I've used was a 12" AC powered set, so I have to use an isolation transformer. -Ian