I installed a three room DTV system a few weeks ago and the customer is having some weird signal loss issues. The system consists of a SWM 5 slimline dish, HR24, H24, and a D12 (of which was not hooked up till yesterday due to it being a Christmas present). The customer contacted me about 3 or 4 days after her install to say that her H24 did not have programming and was telling her to contact DTV to purchase channels. I had her check the signal and when she went back to the channel she was on the programming came back up. Then a few more days go by and she's having the same problem. At first she says it's sfss and then it goes to channel not purchased. Because of scheduling issues with the holidays we set a service appt for Dec 27. I spoke with her again on the 26th and she said that now the HR24 is having the same problems at the same time and occasionally the receivers will pixilate as well. I went back out on the 27th and of course nothing was screwing up while I was there. I figured since the problem started with one rec and then eventually went to both ( that were hooked up at the time) it was probably a splitter. Just to be safe I went ahead and changed out the splitter, 21v pwr supply and the lnb. Today she called me back again with the same problem again just on the H24. Could this be a bad piece of cable between the splitter and lnb or a bad ground block? I did use an existing line from the ground block to the splitter. Anyone seen this type of issue before with a swm or mrv system? Any help would be greatly appreciated as I am going back out tomorrow afternoon to try to resolve this issue. The power supply is on the H24 and the lines split from that room to the other two rooms (if it helps). And also the splitter is a 4way swm with one port left empty.