Hitachi LCD projection power,temp,and bulb lights flashing

SOURCE: Power button Flashes

Bad Convergence circuit , replace 2 STK392-110 & fuse will take care the problem

SOURCE: Hitachi Rear Projection LCD TV Lamp

Projection TV makers charge an arm and a leg for their replacement lamps. They make it easy to do but as a result the custom lamp assy is expensive. The trick is to just buy the bulb for your model TV from any number of us aftermarket sources at a fraction of the lamp price and install it in the old lamp yourself. really easy. Some models are real bulb hogs though. Look them up on the net (include the word complaint or repair) before you buy, or you might be sorry. Many class action lawsuits out there - even against some of the name brand makers.

SOURCE: Hitachi Ultravision Digital 55" hdtv

Good Day;
Try this:

Symptom: All Front LED indicators are flashing in sequence: Power-->Temp-->Lamp-->Power......continuously
Cause: Replace Lamp . This symptom may happen all the time or it may be intermittent. It is normal if it occurrs from time to time, See OG under TV Front Indicators explanation notes.
Good Luck, big IRISH.

SOURCE: chirping noise and flashing front power light.

I had the same problem with my 46" Hitachi TV. We left it unpluged for a couple of days (literature says at least 4 hours) Pluged it back in, held in on the AVX and power button at the same time, this puts it into self diagnostic mode. Error codes should appear on the TV screen, then it should instruct you to hit any key to continue. Press the AVX button and it should put your TV back to normal. I suggest however, that you download the specific manual off the internet for your TV. I got my manual from an electronic forum site (http://www.eserviceinfo.com). My TV model is Hitachi 46EX3B. Hope this helps.

SOURCE: Hitachi CP-X250 LCD Projector

clean filter and reset the filter timer by advanced options filter timer and hold reset till menu shows then arrow up and it will zero out.