Blue Semi-circle on screen from left to right, need help...

SOURCE: Picture Problems with Hitachi 53" Projection TV

most tv shop's will replace convergence ic's,which your tv needs.Thepart number is stk392-180 very common You need 2 plus poss resistors,3 bucks apiece

SOURCE: rear projection tv

You Tv has a bad chip ( I recommend you replace both on the convergence board ). 80% or more of the projection sets I get into my shop have this same problem and by replacing the convergance chips, it normally corrects the problem. If you are going to preform the repair yourself, be sure to use lots of heat sink grease to prevent the problem from happening again and I always suggest you use the original chips ( same numbers ) as the after market parts don't always work well. As a pre caution, always remember to unplug the set before doing any work inside the set. Good Luck
Ed
NC Electronic
Mills, Wyoming

SOURCE: When doing Magic Focus on

Your TV most likely a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here are some photos of convergence problems.




Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

SOURCE: 50 inch hitachi tv, shadow behind writing and crooked screen

Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} The best advice I can tell you at this point is to go to tvrepairkits.com and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK IC’S , not those cheap aftermarket or china made IC’S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases GOOD LUCK!!!
Larry Dillon, senior tech/tvrepairkits.com