Question about Hitachi 46F500 46" Rear Projection HDTV-Ready Television

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Green is warped

From the looks of my 46F500 the green seems to be inverted on the top and bottom of the screen plus when you try to watch it everything is in 3-d it seems plus the inverted green

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Replace both convergence ics.they are on the
right side on heat sinks.stk392-110 is the
part#

Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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Monitor comes on and goes right to a black screen like the power was turned off but the power light is still green.


hi,
You have to check the back light of your lcd monitor. All lcd screen have a back light to illuminate the pixels. you can conform is the back light is faulty or not by watching the lcd screen nearby. Watch can you see any image (negative image) on the screen. you have to look very closely. if you see any image on the screen then the back light or the back light inverter is faulty.

You have to check the back light inverter board. Normally in lcd monitors you can see three circuit boards. power supply, mother board, and the inverter board. If available then try to replace the inverter board. There are high voltage transformers in this board. There is a chance for its winding get short. You will not get the transformer in open market. Try for the inverter board .
ok

May 06, 2011 | LG Flatron L1511SK (Black) 15 in. Flat...

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Goes through magic focus than in the middle stops and displays #5


This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 19, 2010 | Hitachi 46F500 46" Rear Projection...

1 Answer

THE PICTURE IS GHOSTING AT THE TOP & BOTTOM OF THE SCREEN. THERE


The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 28, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

Top left of screen looks warped as well as bottom. Almost as if something hit the screen, but the kids say it wasnt them. Tried the convergence feature on the setup, but that does not help in any way. Also...


has the screen been pushed in?
does it look cracked?

the reason the pic looks warped may simply be the magnifier screen (lenticular) behind the outer screen (freznel) has been pushed in giving the distorted look

if so and you are capable it is not a big job

however if either screen is cracked then it is an expensive job

Oct 13, 2009 | Televison & Video

1 Answer

Sometimes after the my TV is one for 20 mins or so the screen warps, shooting white/pink/green lights across the top and bottom of the screen and placing a horizontal black line at the bottom like hal


Your TV most likely has a problem in the convergence circuits. ( 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.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
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.

0667c5f.pngSOLUTION

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.

May 19, 2009 | Hitachi 50FX20B 50" Rear Projection...

1 Answer

Hitachi 46F500 and there is a blue curved bar


Your TV most likely has a Convergence Chip 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

May 15, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

2-3 inch swath of green from top to bottom of screen, in center


Might be a problem with your memory,your video driver,or the screens inverter board.
If you have more than 1 bank of memory,try removing one bank at a time and see if this corrects the problem. If so ,replace the bank that was removed when your screen works properly.
Also ,try updating the driver through the "Windows Update" service. If neither of those works, you may have a faulty inverter board.

Dec 28, 2008 | Dell Inspiron E1505 Notebook

1 Answer

Hitachi 46F500


Having yellow and blue shadows outlines show up on picture.

Oct 03, 2008 | Hitachi 46F500 46" Rear Projection...

1 Answer

TOSHIBA 65H82


you need to replace your 2-convergence ic's #STK392-110 you need to replace both ,,they are attached to 2 big heat sinks and identified as q-751 & q-752 you can get the ic's you need plus free tec support and installation instructions including pictures at the link I gave you.
http://servicemanuals.vstore.ca/

Apr 12, 2008 | Toshiba 65H82 65" Rear Projection...

2 Answers

Warped Picture, Separated colors


Each color (red,green & blue) has an amplifier IC (STK-).
When there is a convergence issue,the first step is change both
IC's for reliability. Then check for open fuses devices,usually
pico fuses.Then re-check convergence alignment.......T.

Feb 07, 2007 | Philips 60PP9352 60" Rear Projection...

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