Question about Hitachi 53UDX10B 53" Rear Projection Television

Hitachi rear projection

I have read alot about the convergence issues-it sounds like my prob. i have red and blue shadows-sometimes i cant turn the tv on- whats up? can i adjust the convergence anywhere else on this thing other than magic focus? i,ve tried it several times and it does nothing. this has been a progressive issue- i'm afraid it will stop working alltogether and i dont have $ to call repair _HELP ME PLEASE!

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1,694 Answers

Sorry--You will need resources to fix this one. STK392-110 IC's need to be replaced,afterwards convergence alignment in servicer mode may be needed.

Posted on Oct 03, 2007

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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 when using the convergence menu.
Screen is bowed or warped.

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 #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.

TV set after fluid change

Solution #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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