VIP211 black screen / rebooting

[86turbodsl]

Hi, I just got a used VIP211 today, after hooking everything up and subbing the box, watched HD for a couple of hours then the box started going black screen and rebooting itself every few minutes. Found some old postings on this, did anyone ever figure out a fix for it?

Config right now is:
Dish 500 110/119, DP311, VIP211 SW21's