There is blue shadows in the picture, my hitachi cp-rs55 just got a new lamp, but the problem is still there???? How do i solve this problem??

Your Blue LCD Light valve is burned or has dust on it which blocks the blue color.

With RGB, the absense of blue (Red + Green) is yellow.

If you're lucky a simply cleaning at the light valves will solve your problem. Otherwise your looking $$ for a new LCD valve.

You should check voltage to the lamp, check also that the fan is working. The thermic sensor may also be defective.

This will require a technician to repair.

You can do it yourself if you have the service manual and some knowledge of electronic repair, and access to the necessary parts.

It's generally cheaper to buy a new unit than to have one repaired though, unless of course it's under warranty.

(1) While the projector running, press the MENU button to open the menu.

(2) Choose "OPTION" , then press ENTER button.

(3) Choose "FILTER TIME", then press and hold the RESET button for 3 seconds.
(4) Choose "RESET" .

There is a menu item which has both the lamp hour reset and check air flow, etc. You must go into the menu and reset the air flow item. MAKE SURE YOU CLEAN THE DUST FILTER!! Heat is the number one killer of projectors and Hitachi's run "hot". I clean my projector once a week--Hey, I'm not rich. lol! Also, excessive heat will cause the lcd panels to fail prematurely and cause lots of other components to do the same.--Rick

make sure you reset the lamp timer. Manual has the steps. Hitachi Performa CP RS55 3 LCD Projector

if the timer is reset, try cleaning the color wheel. Optoma HD20 Projector Cleaning this video is for an optoma but the color wheel is cleaned the same way in most DLP projectors. Dirty or dusty color wheel sensors cause the projector to shut down and act like its the lamp.

Hi there

If the unit is brand new , they should replace it under warranty.

This is most probably a faulty Powersupply / Fanboard !

Hi there

In your Menu options there is a subfolder where it either reads lamp or lamp timer.

Scroll down to it and hold down you right or left arrow key on the Projector for a couple of seconds.

Sounds like you LCD has gone bad... Its like a calculator LCD when you press down on the screen of it it get like a blob. My projector also has done this... Half of the screen is all blue

Unfortantly it sounds like you have dirt or dust inside this unit or there is a defective LCD panel. Good Luck