Question about Hitachi 53UDX10B 53" Rear Projection Television
About a week ago, the TV was ghosting too much green. I replaced one of the convergence ICs with a STK392-110, turned the TV on, and there was too much red. I replaced the other IC with an STK392-150 (the 110 and 150 were already on the TV, I thought I'd just replace them with the same numbers), and now when I plug in the TV, I get beeping from it. I look inside and when its plugged in, there are 2 green lights beeping on the left of the convergence board. Does anyone know if it's possibly a fuse? I checked the circuit boards for shorts, and I didn't see anything significant. Thank you in advance for reading this.
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Posted on Jan 02, 2017
C603 is a polyestor capacitor 0.068UF-FEB 50V part number 0880047R S901 is the power relay ALKS329 the part number for the relay is FJ00142 . I recomend checking the pins on the ICs to make sure they are not bridged. If you need more assistance let me know. Vance Baldwin should have the parts if not you may have to order through hitachi
Posted on Jun 06, 2008
Unplug TV from ac outlet for few hours, this will discharge caps in circuit boards and you can take out desired board after unplugging connectors.
Always Be Careful while doing repair in TV.
Posted on Dec 26, 2008
Try resoldering the pins on the ICs first. If that fails to resolve the problem, change the IC responsible for RED. You should be able to determine that from the service manual. In that area you should also see either fuses or low valued resistors that feed the STKs. Check those as well.
Let me know if you need further info.
Posted on Feb 13, 2009
SOURCE: poor colour balance
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 bad and should 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 Apr 08, 2009
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