Question about Mitsubishi HC1600 Projector
Typically this problem is caused by line noise or interference, such as an appliance such as a fan, AC unit, or other motorized device on the same electrical circuit or electrical ground that your projector is connected to.
In a worse case scenario,like what happened to me, is that it may be that your neighbor has some device like an air conditioning unit that is poorly grounded and it sends a rolling line through the round and through to the cable tv's coax cable and back to the junction box. If this is the case, your neighbors probably have similar problems. For this type of problem, you can report it to the cable company for line quality problems, they can send a tech out and try to isolate the problem and where it is originating from. In my case, the third cable tech that came out traced it to a grounding problem on my neighbors house, but the cable company can't fix the problem unless the home owner grants them access to their property to investigate further.
Posted on Sep 28, 2009
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Posted on Jan 02, 2017
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