Stupid thing for Mini guys to check, b&w rolling picture sounds like what happens when a device is in 576/50 PAL (Europe) mode. If it is only on this channel, disregard the suggestion as it would be your entire picture on any channel and in menus if this were the case.
Unfortunately Jen & I are leaving out of town early tomorrow so I don't have time to setup C-band small dish to check this and get a sample for the engineers. I'll try to get someone else to check this and get me the proper sample to get it fixed.
Also, Mini HD SE guys, we just released new 2.0.38 firmware several hours ago at
www.namini.tk Obviously it isn't meant for this possible/probable issue but it is worth a try. Adds some new features anyway.