Typically this problem is a bad ballast.
And the flashing lights are indicative of that as well. Its super easy to replace in that one, no soldering just plugs in. Also make sure the tiny micro switch on the door frame is in the correct position since you replaced the lamp;-)
the best place to get that ballast is: https://www.partstore.com/Content/CategoryPages/Electronics-ProjectorsDLPTVs.aspx
I would call them to order the ballast: 1-***-***-****.
In any case, I will stick with you until this is complete.
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