Replaced lamp in panasonic TV and now when turning on it blinks green then instead of turning on blinks yellow and goes off.

Unfortunately it may not just be the lamp, but that's the first place I'd start. If the lamp replacement works, great, if not, then it also might be a ballast issue. That's a common thing that goes out on these TVs. Call DM customer service at (800) 281-8860 for some tech support before investing money into it. I'd recommend the entire lamp assembly with housing, it's just so much easier!