I have a cctv system with 8 cameras,dvr fed by hdmi cable to a digital modulator and to tvs around house,last week system started to drop out pictures on tvs are replaced withmulti coloured wave y blocks for one/two secs then pictures return a few mins later drop out again over ndd over mostly after8pm,fitted new dvr this afternoon, worked fine until about 8pm,then same fault,so retuned digital modulator to higher channel same fault,tried moving channel again a few times,no better,tried a few different hdmi leads,no better checked camera power supply and reduced voltage to 11 volts no better, still pulsing color mozaic black out every few mins, any ideas,seems to be some kink of high enery transmission or radar...?????????? now tried a different digital monitor,and same problem,also this clour blocking seames to be making some kind of vertical or diaganal paterns(alternating) ??/now camera multi screen,cams 1,3,4,5,6,7,8, show flashingcolour paterns but cam two showing a patern similar to a filled in ecg display.
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