Question about Hitachi 65SWX20B 65" Rear Projection Television
My set is a little over 4 years old and just developed "convergence" problem where the colors are separated and the lines are not vertical and horizontal when I select "magic focus" in the manual mode. I am able to combine the different colored lines to produce white lines (and a better picture) but the lines are curved and I lose a curved portion of display from top of the screen. I have to use "magic focus" in the manual mode to "converge" the three colors every time I power on the set.
Hitachi tells me that I must contact a local independent repair shop. If anyone has fixed a similar problem (e.g., replaced a chip), I would like to hear from them.
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
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 baHitachi 65SWX20B 65 in. Rear... Problem - 2c07611.pngd be replaced. This is a common problem.
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
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 May 07, 2009
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Posted on Jan 02, 2017
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