| http://www.w3.org/ns/prov#value | - Most LCDs have a refresh tolerance of 60hz, please make sure the refresh rate is also 60hz.If this is a AV device such as a DVD player or cable box, then signal is not valid, try changing a new set of cables or changing out the DVD player or cable box to see if those are the problem.If you have checked all of those options and your unit is still giving you the over range message, you will need to
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