Burned IC? or could be the processor. Very rare for Panny plasma

Pana plasmas can display fault codes through the power LED. You have to watch carefully how it blinks. It has long and short blink and in sequence.
As per my experience with gen4 and gen5 Pana panels, two long blinks means faulty power supply section. Video processor board error gives 5 short blinks or something, but can't remember that well.

But since your unit is under warranty, no need to sweat over that. Let the Pana tech people handle it.

Regards.

That was throught my experience dealing with the panels. But upon searching through Google, got the link below and jump to page 38.
Panasonic Plasma TV Troubleshooting Manual

since it is under warranty.. just ask them to replace a new one!! i dun wan something that failed me b4!!

Just got my 50PY800H. Compare to my 42PV60H, it's huge difference. Even color is better on the PY800H. And the best part is I can get 1:1 pixel scan at 1080p. I do a quick check using i1Pro and Cinema settings with warm color is the closest to D65 but the gamma curve is out at around 1.9. Best part is you can access the service menu in the PY800H (I can't do it on the old PV60H) to adjust the color temp to perfection. Didn't see any option to adjust gamma yet. If you are using 1080p, turn down the sharpness to 0. Anything more than that will generate artifacts on your screen. When I first received the unit, it's set at standard and normal color temperature and it hurts my eye to even look at the screen for more than 5 mins. With tune in color temp, it's more pleasing. No regrets getting this unit. Everything is so sharp.

For those who want to know how to access the service menu:

PLEASE DO NOT enter service menu if you don't know what you are doing. You can screw up your display. Luckily there should be an option in the menu to reset back to factory default.

1. Hold the channel down button on your TV (NOT remote).
2. Press the "Recall" button on your remote 3 times.
3. Release the channel down button.
4. Quickly switch to the HDMI input before the service menu show.
5. Press 1 or 2 to go through the service menu. On of the option is WB-ADJ (White Balance Adjustment). Use 3,4 for sub menu option. You can choose RGB cut/gain in this option. Usie vol up/down to change the value. Press OK to save the settings. Please note that you need to have a colorimeter or spectrometer to do White balance adjustment.

If anyone know how to tune the gamma curve, do let me know.

I'm not sure if you should copy my setting. Normally from tv to tv, there should be some differences even for the same model. I would advice you set to cinema picture mode and warm color temp first.

Anyway, here's my setting:

Press 9 to change WB-ADJ to cinema
Press 7 to change color temp to warm

R cut - 7A
G cut - 79
B cut - 81
R drive - FF
G drive - F9
B drive - 8C

For PC levels 0-255 use
Contrast 55
Brightness 60

For Video levels 16-235
Contrast 50
Brightness 52

Make sure you set aspect ratio to 16:9 so that you have an option in Setup menu to set overscan off (to get 1:1 pixel for 1080p).
Sharpness at 0

Good luck.

Some people are sensitive to phosphor decay. Try turn off Intelligent Frame Creation to reduce the lag. Another possible issue is your contrast is too high which cause the green phosphor do not have enough time to decay.

http://www.hdtvtest.co.uk/news/plasma-phos...-2007040133.htm