Originally Posted by wdwms
... I noticed that the trailing edge is green, while the leading edge is purpble.. Now this tells me that the green phosphors are not firing at the right time. That is, the purple edge comes from the red and blues firing, then the greens come on, produce a white image and at the end the reds and blues have turned off while the greens are still on. Hence the purple leading edge and the green trailing edge ...
I too suffered with these symptoms on a TH-42PWD7 and actually returned it !
But I now know, most if not all Plasmas suffer from this.
Would your analysis also explain why even a static object can exhibit this phenomenon.
When I had my PWD7 I created a very simple menu on a home produced DVD - see first attachment.
When played back on the PW7, the white stationary rectangles had obvious green and red edges - see second and third attachments.
However on an old model Samsung Plasma PPM42S3, there were no colored edges on static objects - only if they moved (in other respects the Samsung was much worse than the Panasonic!)
The same DVD player was used for both panels using their respective component inputs.
The Samsung definitely produced a cleaner static image. Also, I took my DVD to several retailers and proved that you could see these colored edges on Panasonic Vieras aswell.
So I can't help thinking that maybe Panasonic plasmas suffer more than others from this particular issue of uneven phosphor processing whilst they may be superior in other respects.
BTW I'm going to repeat my test on a PWD8 as soon as I can locate one here in the UK!