My monitor powers on with a dark screen for first two minutes then comes on with no problem. when left off for more than 5 hrs. It repeats the same problem. the problem has esculated with screen remaining black for the first 2 to 4 hrs. of being turned on before showing. I was told by a monitor repairman that the problem is with the power module and it can be repaired with a estimate of 156.00.
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