Question about Hitachi 50EX20B 50" Rear Projection Television

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I cannot get my Hitchai 50EX8K aligned. There's a

I cannot get my Hitchai 50EX8K aligned. The red will align only in one direction. The blue won't totally align. And there's a lot of yellow and blue on the screen.

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  • Hitachi Master
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Replace the convergence amp ICs and also check the low ohm resistors

Posted on May 18, 2009

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I have 3 thin lines red, green,blue at the top of the screen, from side to side and slightly arched. I tried the convergence, but it didn't help. Is this a costly repair or can it be done myself?


It is alignment problem & needs lot of patience, expertise to align LCD panels. To align slightly loosen the screws on red & blue panels. Switch on the TV with input source as computer as it has steady graphics. Align for red & blue by slightest movement using light taps with screwdriver sideways. When you are satisfied, tighten the screws. If it is one pixel height line, just neglect it. That much error can be expected.
WARNING: If you are not sure, do not carry out the alignment. Otherwise it will go more out of alignment.

sonsunny

Jun 14, 2011 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

Tv is showing double images, not lining up


Your Convergence ICs have failed. Replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu.


Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option to align the red and blue colors

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.

Feb 20, 2011 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

The red prints just under the blue, everytime you print blue, creating a shadow. if you print red only, the letters look as if they are out of alignment.


Just align your printerhead by clicking the maintenance on the printer then click the printerhead alignment and follow the steps of how to complet the process.

May 27, 2010 | HP LaserJet 2605dn Printer

1 Answer

Convergence adjustment aligns red and blue picture tubes to align with fixed green tube. Green image appears to skewed (possibly out of focus) in one direction making it impossible to get red and blue...


Ur tv convergence are dead.U know how to solders?Must replaced the 2 STK convergence ICS,some or all it resistors.Tries Websites Tv repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for parts and labors.

Apr 04, 2010 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Hitachi 50ex8k rear projection year 1994. How do i get the picture to line up right? alot of knobs and cant get it right.


You will need a signal generator. And need a convergence map to trouble shoot alignment. But before you attemp this, you probably have some bad solders on the potetionometers that tweak alignment. Or you will need to replace the correction ICs. I suggest you take your tv to a tech.........As you may want to do this yourself....this is a big mistake. Get help....profesional help!

Nov 16, 2009 | Televison & Video

1 Answer

Picture is OK, but colors are off and there is a blue star background that shows on dark colors.


Hello, With most rear projections there is usually an alignment to do with the set up with your TV. This is so the red, blue and green projectors align together to give the correct colouring. This sounds to me what may be causing the outlining of the blue. This can also make it seem off colour. Look in the set up menu of the tv and see if you can find this alignment feature. Usually a cross will appear and you move a blue, red, and green cross with the arrows on your remote to align over the original white one. If this does not work, it may also mean that one of your projectors, that is the red, blue or green one may be failing causing the off colouring. Hopefully this alignment may fix it for you.

Oct 26, 2009 | Sony Grand WEGA KDF-60XBR950 60" Rear...

2 Answers

COLOR PROBLEM


you have a miss aligned convergence. try to aligned it first.

Aug 06, 2009 | Philips 55PP9363 55" Rear Projection...

2 Answers

RED Convergence Alignment issue


Replace both STK392-110 Convergence IC's with Toshiba or Sanyo quality................No cheap IC's !!!......................T.

Aug 16, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer

CONVERGENCE PROBLEM IN TOSHIBA 43H70


Replace both STK392-110 convergence IC's with Toshiba or Sanyo brand........no cheap junk IC's !!!.................T.

Aug 16, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer

Center adjust on Red gun is not aligning with B&G vert.


frist set blue and green than set red itwill shoew yu single chakall will be focous in single line than than gun will be allign horizontal if it will correct if itisnot comming than cathode problem.

Oct 06, 2007 | Sony VPH D50HTU Multimedia Projector

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