Hello, my openbox just started having this switch problem and I though it was my 4-port diseqc switch, changed it out and worked great for a few hours and now is acting up again. I have openbox going to 4-port, port #1 to G-box and on to c-band lnbf, port #2 to ku-band side of lnbf, and port #3 to sg-2100 and on to spitfire elite. Worked great all summer, any ideas? If I switch between spitfire and back to 741U is usually corrects problem till I flip H/V a few times on the 741U and then it quits switching again till I go back to spitfire and back again to 741U. Strange.