I have 60 inch mitsubishi hd DLP flat panel projection screen model is wb60735.i unplugged it from the wall then i plugged it back in the wall the next day.it came on but the screen was all black but still can hear the sound can you tell whats wrong

If you see absolutely nothing on the screen then you may have a problem with the Lamp unit. If you can see around the back of the TV look to see if there is a vented opening with a noise of a fan and a rather bright light. If you see there is no light then try a reset (hold power button for at least 10 seconds). Turn the TV back on and the green LED should flash for a bit. If you still have no picture or video of any type (completely black screen) and have sound only you probably have a bad lamp. These lamps are around $125 or so and can be bought on Amazon or other sites that sell these parts. It's fairly simple to replace but make sure that the tv is unplugged and securely re-install the access door. Hope this helped.