Hitachi 50v500 I have a blue blob on the top through the middle, and a red blob in the middle. I have recently changed the bulb, and also had the ballast changed. Very expensive. Is there anything I can do without having to pay out more technician fees?

isent the 50V500 a ldp with the lamp in it

there is not alot you can do yourself

That is caused by excess heat possibly due to poor air circulation/blocked filters.
It is damage to the LCD panels. It won't get any better, just worse.
So look for another Blue LCD panel and someone who is experienced to fit it.

Yes,only ur tv still in warenty.Not u paid all repairs.

I have the same tv and the same problem, but my yellow is a cloud around the outside of the screen. My tv was recently moved, and a repair shop told me that sometimes in a move these tvs light engine takes a shock and causes a yellow "band" on the screen. I am hearing that these light engines are not cheap either. Hope this helps you.

CALL HITACHI THEY MIGHT HELP WITH REPAIR, HAS A BAD OPTIC BLOCK.

If you have the "red" blob in the center of the screen or you have "blue" blobs that show up in random areas of the picture then the only repair is to have a technician replace the optical light engine.

There is no solution with Hitachi products.

If you have read many of the posts, you would have known not to buy Hitachi Telivisions or like me avoid all Hitachi products. There help line is not very useful, they just blow you off. I have never had a worse experience with other manufacturers. Take Onkyo for instance, they had a problem with a chip in their THX receiver and it was a year later ... I called their help line they located a repair store about 40 miles from where I live (in Texas that is not very long) and got my receiver fixed and this was 8 years ago.

Also use Consumer Reports to check the frequency of repair record for the product you are going to buy. In Plasma - Panasonic is a safe brand, in LCD's Sony or Samsung have good repair records.

Research the product before you buy it, avoid walking into a store have the salesperson direct you to a product. And then you save money if you order it online. Amazon online is very good.

Light Engine is bad, Hitachi might replace it for free if you had a repairman diagnois the problem
This TV type is junk

call hitachi services and tell them about it cuz its not the bulb its the engine they should give you some kind of discount