Hi,
I was trying to find some mega Radio Shack type place online... (Powerline doesn't seem to maintain a website.)
I'm hoping the techies here will know where I should look for a replacement tip/plug (it's a removable star w/4 sizes) for a "Powerline 1000mA Universal AC Adapter 3-12 Volts DC" model# 0900-33. I spent too long trying to find this with Google. It drives me nuts to throw away a $25 item for a $3 part that was mass produced - just wastefull, for me and the environment. (The end of the cord has a reversable piece (for polarity - 2 prong plug) which has a thin metal tube with a yellow plastic piece on the end - the adapter star plugs into that.)