Fast green blinking led and rebooting is going to be related to components in the chassis. If you have the tools and ability, suggest you inspect chassis for bulging caps, test voltages on power board connectors during plug in/power on. Otherwise start with replacing power board (934C159001) and test, then if needed DM board (934C152006). Can provide service manual if you need it.
Also, I would NEVER EVER put a $50 lamp into a tv. They fail early and possibly cause other problems like killing ballast. Get original quality product: www.dlplampsource.com
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