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HV CABLES I was replacing the convergence IC chips on my 60in hitachi rear projection tv so i disconected the HV cables. When I put them back in and turned on the TV there was and electrical charge snapping and popping all around the unit the HV cables plug into. How do I fix this?

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That means that there is a bad short somewhere.

You did something wrong when you replaced the STKs

Posted on Nov 14, 2008

  • Ginko
    Ginko Nov 14, 2008

    Check the convergence ICs that you just replaced, see if they had blown again by testing the picofuses on the convergence board.

    check for burned areas on the TV boards, if you do not find anything wrong it may be a faulty power board, that was probably also the reason for the convergence ICs blowing out.

    Try also leaving the TV unplugged four or five hours, to check if the problem is with electrostatic charges accumulated inside the TV and then discharged via signal board (the one that connects to cables).


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Hitachi Television


Your TV most likely has one or more possible problems.

Problem #1: 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.
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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.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

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