CHA- displayed on my D200?

Right, my Nikon D200 has started to display -CHA- on the top LCD screen. I have tried both my CF cards, 4GB and 1GB and it isn't having it. I've looked at the problem on various forums on Flickr and they say its a bent pin problem, none of the pins are bent? Anyone experienced this problem before or know what to do, many thanks Owen
P.S: i have formatted both cards and tried installing different firmware updates onto the camera and still nothing.

I haven't heard of CHA but certainly could be a bent pin. Looking down into the CF slot, even with extra light, you may not be able to see the bent pin but if that's what the camera is telling you then that's probably correct.

My advice would be to see a pro or call Nikon for assistance… You can't fix this.