I have had video/signal issues during the past 2 cold spells. With temperatures as low as zero at night and up to 27 right now I lose the signal to half my tv's. I have a swm 16 switch going to two 8 tuner splitters. I have lost the signal on the same 8 tuner splitter during each cold spell. All tv's working off of this splitter are gone. The tv's working off the other splitter come in good. Any ideas? Thanks in advance.