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

2 Answers

Color converngence, blue and yellow, 3D effect

I have a Hitachi 46F500, chassis DP23K. After reading you website for 2 days I have gotten up the courage to fix my own TV. I have decided to order the Kit from B&D. I have (2) STK392-150 on the original board and I am going to replace them with the same ones in the kit. I think I need to replace RK50 too, because it looks a little brown so I can't see the color of the stripes on it and I don't know if it is a 2.2 or 2.7 ohm? I have searched everywhere, could someone please tell me which one it is?

Why does it seem to be so difficult to find information on the 46F500, is it because I bought it at Sears and it is a model specific to them or something.

I have even checked the free manual site (http://www.eserviceinfo.com/) and I couldn't find this model.

Thanks, No Sponge Bob for the kids makes for a long day!

Posted by on

  • newton8762 Feb 14, 2009

    Since I already have the new 150's will they work for now? And if I go with the 180's will there be heat issue?

  • i0kepa Feb 17, 2009

    I've got a stupid question but what do I set my OHM meter to?? I've never used it to OHM a resistor before just as a volt meter. I've got 4 different settings on my OHM meter 200, 2K, 200k and 20M.

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2 Answers

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  • Hitachi Master
  • 3,459 Answers

Solution #1 posted on Feb 28, 2009 Color converngence, blue and yellow, 3D effect - 0%20stars_w.png
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Rating: 91%, 106 votes
Your TV most likely has one of two 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 wheColor converngence, blue and yellow, 3D effect - 701cb04.jpg convergence menu.
701cb04.jpg
77ea520.jpg
f0900cb.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 convergeColor converngence, blue and yellow, 3D effect - 2c07611.pngbr />

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
PictureColor converngence, blue and yellow, 3D effect - 2c07611.pnget that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

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.

Posted on Mar 09, 2009

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  • Hitachi Master
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Well let see what we can do to correct your problem if you can solder you have got it made Use STK392-180s these are the better ICs CK all of these resistors RK42 3.3 RK46 !.8 RK 50 2.7 RK54 1.5 RK58 3.9 ohms RK62 2.2

Posted on Feb 14, 2009

  • ladywinn
    ladywinn Feb 14, 2009

    The 180s can handle the heat stress better then all of the others and hold up longer.

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1 Answer

There is red and blue lines around screen and images. (Almost looks like it should be 3d). Does this mean it needs a new lamp/bulb? It is only 6 years old. What is the cost for the part? Thank you


If model number is as listed (46f500) it does not use a lamp or bulb but has three picture tubes.

3d means the two convergence chips in the set have failed.

It depends on if you can solder etc, not a very expensive parts cost (under 30 dollars)

Can you solder?

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