Question about Hitachi 51UWX20B 51" Rear Projection Television

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I had my 51uwx20b tv for 7 great years. for the

I had my 51uwx20b tv for 7 great years. for the past 3 weeks my screen has a quick flash of screen distortmant from right and left. sometimes the screen has a static line while it does it. Help

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Needs soldering the bad connections on the convergence board

Posted on Nov 17, 2009

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Power light comes on along with OCP light. No screen or sound. internal switching noises coming from inside the tv


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VIZIO 42in LCD HDTV - Dark colors and flickering


It sounds that the back-light CCFL lamp is faulty. It is time to replace it. When replacing, do it to all CCFLs, because, the life time to these lams are expiring now, as the set is nearly 4 years old. Check this link http://electronicshelponline.blogspot.com/ to get more details about how to replace the CCFLs. Pull up older posts there. Some among it have details.

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1 Answer

Sony kp-57HW40, screen flickers with blue tint, then shuts off


The problem with you set is: focus block and(or) intermittent G1 short in a blue CRT(picture tube). To determine the tube failure, you must take front panel off, rectangular cover under it and gain access to CRTs. You will see 3 picture tubes with wiring and boards attached to them. on a bootom of the set there is a black plastic box with 2 rows of 3 potentiometers on it.one raw is for the focuses, the other one is for the screen controls. it will be written on the box with letters R.G.B. first: take a light isolated handle screwdriver and tap very slightly on the neck of the right tube. Do not brake the glass! That's the blue CRT. It might have a blue color sticker on it or blue socket. Tv must be on and running, while you perform the test.If your tapping on the neck makes blue flashing, your CRT is bad, if not, try to play with blue "screen" potentiometer by turning left and right, slightly. If that will cause the blue flashes and hard to adjust, replace the unit.
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2 Answers

Have an Hitachi 51UWX20B that has the 3D thing going on, when I adjust it manually, and exit, the TV wont let me save, cancel, reset, or go back! Have to turn TV off to get out of that screen. Any advice...


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.

Feb 21, 2009 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

TV Turns self off- 4 blinks on standby light


Yes, the blinks are error codes. I would not bother trying to figure out what they mean, I can tell you right now. Expensive repair. Average repair costs are 1/4 to 1/2 of the TV's current worth. Most likely a bad transistor. The average expected life span of a TV set is 3-5 years. After that, stuff starts wearing out fast. Time to move on.

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1 Answer

3D image


you have to replace all 3 ic's and 2 are stk 392-110 and the 3rd one is stk 392-150 they are located on the extreme right of your tv on a long heat sink all 3 are located there.You can get replacements as well as free tech online support at
http://servicemanuals.vstore.ca/

Apr 10, 2008 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

Sony Trinitron KV-32S40 32" TV problem


This is a simple and common problem. The solder joints on the vertical output IC have cracked loose. I actually did a housecall on the exact same set with the exact same symptoms this morning! A good tech will resolder the pins of the vertical output IC and all other major solder joints on the main board and the set will play fine.

Sep 30, 2007 | Sony FD Trinitron WEGA KV-32FS100 32" TV

1 Answer

Blank Picture, Sound OK on Sony TV


Hello, there can be a contact problem in power supply, deflection or RGB stage. Please ask the tech to repair it for you. Best regards, Arpi

Apr 22, 2007 | Sony KV-27V22 TV

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