Originally Posted by MBL
Can anyone tell me, what is wrong.... and also what possible can be done to fix... I first thought it was a bad HDMI connection, but was kind of scared to see, that the error persisted in test-mode on the projector itself...
A thought. Did this happen gradually? Did you moved the PJ?
If you're seeing magenta instead of white, this is because there's no green in this stripe. Try a green signal. If the stripe is now black, then the green LCoS / polarizer is faulty. There's a chance too that the polarizer could have moved. JVC PJ's have a sealed light path, so you cannot fix it yourself. If your PJ is out of warranty, you can tell them that the "pink banding" is a well known problem in the AV forums, and that you know that they are repairing that (on warranty) without any questions (as klausm said).