The screen blacks out for 1 second then comes back and then the sound comes back a second later. This continues to happen. Sometime it's a few minutes apart then 10 minutes. No real sequence. Coincidentally this started happening right after I hooked up my brand new LG TV. I switched to my IPTV box and it didn't do it. I also confirmed by hooking up my second T5 and no blacking out. The power to the box doesn't shut off so my thought it's the HD module overheating. The box is only a year and a half old and has had a cooling fan since the beginning. The second box is 3 years old and no issues. Any input would be appreciated.