No Picture on the LCD screen or view finder (by 17 users)

The Sanyo HD1-PVC Black Screen problem can be corrected by cleaning the iris blades. The lubrication on the blades has set, and caused the blades to close and stay shut. The onboard motor is not strong enough to overcome this setting of the grease. 
Have them cleaned and leave them ungreased. 

I think the image sensing IC is defective if the lens block is functional.
We can support you for service manuals and original sony spares.

Stay in touch and refer the camera to experienced service professionals.

PC BOARD, FP-217 Sony Part #: 165640013
Order this part from
http://www.nexttronics.com/catalog/sony/1/165640013.htm

i had the same problem recently and i got my viewfinder working again

FOLLOW THESE INSTRUCTIONS
http://www.skateperception.com/instructional/instructional.php?id=ribbon

I Have Problem with DCR-HC30E Mini DV- There is no picure in LCD screen as i can see all my menu items and pre-recorded videos. when I try and record the screen is pitch black even though audio is recording.

Is anybody can help me to solve this problem

I can only speak for the Canon zr60, but if you call the toll free Customer Service number and describe the problem (which is a bad CCD) they will not only replace it at no cost, but will email you a shipping label, so it costs you nada. I use these in my classroom and have had at least a dozen repaired in the past couple of years. Also, the tech suggests that you run a head cleaner thru for 10 seconds, every few hours of use and always use the same brand of tape, as each company uses a different lubricant in their tapes and it can cause a gummy substance to build up that can cause tape transport problems (tapes getting stuck). The Video teacher

I had this with my Panasonic NV-DS60. I thought it would be the ribbon cables not making good connections from the camera lens electronics because I had a similar problem with another camera. So I took the whole thing apart and disconnected and reconnected the ribbon cables - unfortuantely this didn't work! So I thought there may be another connection I couldn't see so I tapped around the lens area with a hard object (tip of a screwdriver) and it worked! It may be well worth you tapping the case in this way (without pulling the camcorder to bits) on the top, about an inch back from the front of the lens a couple of times. I'm not an expert, but it worked for me! Obviously, don't hit it hard enough to damage it. Good Luck