I'm answering this old question because I stumbled on this page with a Google search for "nexus one repair manual". So, for anyone finding this page looking for info about their broken power button on a Nexus One, here is my input... I have the same issue. I priced out the replacement parts, and the best price I found was 40 dollars. Today I shipped my Nexus to an HTC repair shop. The customer service tech I spoke with stated that HTC usually charges about $55 for a broken power button, subject to rise if there are other issues, of course. For 15 bucks it was worth it to me to have them do it. The part is called a "flex cable". There are different flex cables, for trackball, simcard, mobo, and I think others. Here are some links for parts sellers selling the part I believe we need: http://www.globaldirectparts.com/Google-Nexus-One-Motherboard-Flex-Cable-p/htc736510.htm http://www.lingosbox.com/product_info.ph...