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I just recently had my LE changed on my 50v500A. I now have two problems and I don't know what is causing my problem of getting NO BLUE to show up in any mode or on any screen. How I know that there is NO BLUE, is by multiple methods.
First off, if I go into the user menu - video - color decoding - blue, my screen goes black on antenna, dvd video input, dvd s-video, dvd composite video. If I put it into the red or green mode, the picture clearly goes all red or green as you would expect it to. Not sure why BLUE is missing. I am sure my dvd is working correctly, because I used 2 different ones and they work on my other tv. With the panel off the back of the unit, I can see in thru the filter to see that the blue LED section in the LE is clearly lite up brightly... so I know it is not the blue light causing the problem.
The other issue is that I see I have a 500A and not a 500 (and this seems to be the LE that Hitachi sent me... but it might be that between myself and the service tech, we possibly told them it was a 50v500 and not a 50v500a... but you would think that they would get the part number correct from the serial number).
Not sure if this part number being different would cause the lack of blue. I suspect from the earlier posts, that this should not be the issue, but I would love to hear someone with better experience and knowledge than I to confirm or deny this assumption.
My best guess now is that I either have a cabling problem between the main circuit board of the inputs and tuners and the LE, or this main circuit board has some thing wrong with it and is not sending out the blue signal to the LE.
Hopefully someone out there can help me with understanding what problem is with this lack of BLUE color on my system. I hate to junk this thing since it now has a new blub, a new light engine and lots of time in trying to figure this one out.
Thanks for your quick and prompt response. It sounds like you have had the same thing happen on a 50v500a with a 50v500 LE. If so, did you get exactly the same problem of NO BLUE color being able be displayed? That information would be great to know so I can use it when we communicate with Hitachi. This would make it a simple but somewhat trouble some fix.
Since my original post, I think I might have made a possible wrong assumption when it comes to the BLUE LED working (I thought this because with the back off, I could see BLUE through the filter on the back of the LE). But I now suspect this was only the reflection of the incoming light off the BLUE LED and it was not getting any signal to allow any BLUE color to pass thru the LED. Does this sound correct? I didn't want to mis-lead anyone reading my post in the future.
Finally, is there any way to test the main signal board to tell if it is really sending a BLUE command to the LE? I would like to confirm that it works right before going thru the trouble of getting a new engine out of Hitachi and also spending more resources on replacing it again. It appears that this information must be coming in a data packet of some sort as I don't see in the schematics any dedicated BLUE signals coming out of the signal board.
Thanks again for your or any other responses. Your wisdom and experiences are really wonderful to help those of us who would only be filling the landfills with boat anchors. Brett
Hatman 1,
Thanks for your quick and prompt response. It sounds like you have had the same thing happen on a 50v500a with a 50v500 LE. If so, did you get exactly the same problem of NO BLUE color being able be displayed? That information would be great to know so I can use it when we communicate with Hitachi. This would make it a simple but somewhat trouble some fix.
Since my original post, I think I might have made a possible wrong assumption when it comes to the BLUE LED working (I thought this because with the back off, I could see BLUE through the filter on the back of the LE). But I now suspect this was only the reflection of the incoming light off the BLUE LED and it was not getting any signal to allow any BLUE color to pass thru the LED. Does this sound correct? I didn't want to mis-lead anyone reading my post in the future.
Finally, is there any way to test the main signal board to tell if it is really sending a BLUE command to the LE? I would like to confirm that it works right before going thru the trouble of getting a new engine out of Hitachi and also spending more resources on replacing it again. It appears that this information must be coming in a data packet of some sort as I don't see in the schematics any dedicated BLUE signals coming out of the signal board.
Thanks again for your or any other responses. Your wisdom and experiences are really wonderful to help those of us who would only be filling the landfills with boat anchors. Brett
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Black smoke: Black smoke is often a result of too much fuel and not enough air in the combustion chamber. In rare cases, it can be weak fuel pressure causing fuel to 'drip' from injectors rather than 'spray'. It can also be caused by weak fire in the combustion chamber.
Gray smoke: Gray smoke is caused by brake fluid. It generally means that your brake master cylinder is bad, and is getting sucked through the vacuum brake hose.
Blue smoke: Blue smoke is generally caused by the burning of an oil in the combustion chamber. Normal causes of oil getting into the combustion chamber are weak piston rings, bad valve guides, bad valve seals, or plugged up engines where oil is sucked back through PCV system,usually due to lack of oil changes
Check a second source such as a dvd player or game system using different cables. If the same issue happens then the tv will need repair. However if the issue is not the same it is either cables or the original source.
go to the menu screen and select picture mode/menu and you should see the option to make changes to colors selection. You can also try and find one of your DVD's that has THX listed on the case. These DVD's have a calibration program included in the disc which can assist you with fixing the color issue
This is an LCD rear screen projection TV. There is a Red, Green and Blue LCD pallet that is mounted on what they call an X-cube. If all you are getting is Red and green then something happened to the blue pallet. Either the Ribbon connector came off or is loose or something worse. How hard did you mover it? Another thought. How is it hooked up. If component then this may be the issue as component video connections are Red, Green and Blue. Just a thought. Let me know. Blessings always, A/V Media Tech Guy
never mess with eprom. call the service tech. Memory intialization is done in the service mode. data needs to b written down before intialization. You mess up here and you might as well throw the set away.
You likely have a problem with your Optical Engine. It is very expensive to replace and should fix the problem. The lamp cannot cause color issues. You may have dust/dirt contamination in the engine and it could be clean by a servicer or technical person. The blue LCD panel or polarizer may have failed in the engine giving you blue and yellow (lack of blue) type symptoms.
This is a very common problem with your model. My best advice is to have a hitatchi authorized service center come out and give you an estimate then call Hitachi and complain to them about the problem. They will useually supply the part for free and you will only have to pay labor to put it in. A good shop will run you $300-$400 to put it in for you.
Hatman 1,
Thanks for your quick and prompt response. It sounds like you have had the same thing happen on a 50v500a with a 50v500 LE. If so, did you get exactly the same problem of NO BLUE color being able be displayed? That information would be great to know so I can use it when we communicate with Hitachi. This would make it a simple but somewhat trouble some fix.
Since my original post, I think I might have made a possible wrong assumption when it comes to the BLUE LED working (I thought this because with the back off, I could see BLUE through the filter on the back of the LE). But I now suspect this was only the reflection of the incoming light off the BLUE LED and it was not getting any signal to allow any BLUE color to pass thru the LED. Does this sound correct? I didn't want to mis-lead anyone reading my post in the future.
Finally, is there any way to test the main signal board to tell if it is really sending a BLUE command to the LE? I would like to confirm that it works right before going thru the trouble of getting a new engine out of Hitachi and also spending more resources on replacing it again. It appears that this information must be coming in a data packet of some sort as I don't see in the schematics any dedicated BLUE signals coming out of the signal board.
Thanks again for your or any other responses. Your wisdom and experiences are really wonderful to help those of us who would only be filling the landfills with boat anchors. Brett
Hatman1,
You were exactly right!!! Wrong engine caused the lack of colors. Now my TV is back to normal colors and works great.
You get an A++++.
Brett
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