https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-Canon-5d-mark2-is-noisy-after-replacing-circuit-board/m-p/12035#M1392 After having the circuit board replace from canon repair that was to fix the USB port. Now when I shoot tethered there is a lot of noise in the image . It looks like geometric squares when enlarged to 100 % +. I photograph a lot of fabric and this pattern shows up and the image. And is not usable. Has any one had this problem? Mon, 21 Jan 2013 01:27:11 GMT prpich 2013-01-21T01:27:11Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-Canon-5d-mark2-is-noisy-after-replacing-circuit-board/m-p/12035#M1392 After having the circuit board replace from canon repair that was to fix the USB port. Now when I shoot tethered there is a lot of noise in the image . It looks like geometric squares when enlarged to 100 % +. I photograph a lot of fabric and this pattern shows up and the image. And is not usable. Has any one had this problem? Mon, 21 Jan 2013 01:27:11 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-Canon-5d-mark2-is-noisy-after-replacing-circuit-board/m-p/12035#M1392 prpich 2013-01-21T01:27:11Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-Canon-5d-mark2-is-noisy-after-replacing-circuit-board/m-p/12061#M1393 <P>Sounds like there's a bad connection between a socket &amp; the plug on one new circuit . I'd send it back with a very detailed description of the problem &amp; how to replicate it.</P> Mon, 21 Jan 2013 03:51:36 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-Canon-5d-mark2-is-noisy-after-replacing-circuit-board/m-p/12061#M1393 cicopo 2013-01-21T03:51:36Z