thank you peter.Yes i have seen the supplies you mention on ebay. I will try your solution, even though i am not the sharpest tool in the box when it comes to power i can work out how your solution is supposed to work. There is another thread concerning this problem on flickr, some guys have listed the polarity, though there is some confusion over the correct numbers so i may message tokam.I have actually brought another scanner[8400] which is working fine, would still like to get a 'win' on the 8800f.If it all works out i will post your fix to flickr as well.