Troubleshooting And Repairing Dim Display Problem In BenQ FP71G+ 17" LCD Monitor

Normally for this BenQ FP71G+ LCD Monitor with the model of Q7T4 the major complaint was display appears for a while and then shutdown (cut off) but for this unit the complaint was dim display! That means you don't have the chance to see the bright BenQ logo the moment power is "On". If you look at the screen closely you could actually see the picture except that the display is very dark.