H6510BD - color problems some help needed
I bought an used H6510BD PJ and have problem with the colors on the screen. After turning on all is OK for few minutes, than the picture starts to blink for a few seconds and gets greenish. The color pallette degrades and picture looks like 256 color palette. It happens on all my devices ( ps3, PC, sat tuner ) and on all inputs ( hdmi, d-sub ). Changing resolutions and playing with options doesn't help. Picture stays the same greenish and without full color pallette.
Switching off and back on helps only if PJ manages to completely cool down - about 20-30 min - it starts with normal good picture and problem repeats.
Problem witch color looks like a RGB wheel problem, but if it would be broken the picture should be wrong all the time from the beggining, maybe it is lamp ( over 3000 hours )?
I would rather not to invest in new lamp if it is more probable that problem lays somwhere else.
Thanks in advance for any help and suggestions.