Hitachi 50UX57B 50 in. Rear Projection Television
Problem for Hitachi 50UX57B 50 in. Rear Projection Television

Convergence




By greenerook on Jun 17, 2009

" "
convergence

Solution #1

posted on Jun 20, 2009
Somewhat Helpful)

Ecollier2012

Rank: Guru  Hitachi Televisions & Videos  Expert
Rating: 93%, 586 votes
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.

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Solution #2

posted on Jun 18, 2009
Somewhat Helpful)

Skyassoc

Rank: Guru  Hitachi Televisions & Videos  Expert
Rating: 91%, 282 votes
If it is out of convergence, replace the concergence IC's. The are probly
STK392-110's, STK392-120's, or STK392-150's. Which ever they are, replace them both. Also look for burnt resisters near the heat sinks and Sub Yoke connectors.
Hope this helps,
Skyassoc

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