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Hi, I have an Hitachi 50UX23KA projection color tv taken out of a Time Crisis video game. The problem is that the brightness seems to flick to maximun power and shutting down the TV. Help please!! It caused the TV to shut down at first, but as I adjusted the brightness control on the main-board anti-clockwise, it seems to prevent the tv front shutting down and a bright screen with red, blue and green thin horizontal lines. Help would be much ap`reciated!!!

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4 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1694 Answers

SOURCE: hi toshiba 43 rp

You have a confusing mixture of data......Please provide
Make,model,age and chassis off sticker on back of set.....T.

Posted on Nov 27, 2007

ctf1800
  • 4402 Answers

SOURCE: hitachi 52 projection tv

use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.

Posted on Dec 05, 2007

SD Tech
  • 14553 Answers

SOURCE: hitachi 51f500a rear projection tv screen looks 3d

This model uses two convergence IC's----if 3 D one or both are bad.


Most of the time this set uses either two of the STK-392-110 OR THE STK-392-150 CHIPS.

Both chips and any bad protection resistors around them need to be replaced and the set adjusted.

If you are able to do the repair yourself total parts cost will be under 30 dollars.

Some history for you:
This set like all rear projection tube type sets uses two chips---the ones in your set are Black in color--about 2 1/2 inches wide X 1 1/2 inches tall and are on either one large or two smaller heat sinks with fins on them.

When the chips are installed a white grease called heat sink compound is applied to the metal back of each---the grease transfers heat from the chip quickly to the metal it is bolted to.

After some years the grease dries out from the heat and one of the chips goes instantly.

You can buy a pair of the chips for your set on Ebay for less than 15 dollars plus shipping--

If you cannot do the repair yourself--shop around your area---most shops charge 300-400 for this type of repair. Whoever you get to do it make sure BOTH chips are replaced or you will have the same problem in a few months.

If you open the set and locate the chips---they will have the full STK number printed on them in white letters----there are about 12 resistors around them that need to be looked at--if any are discolored they need to be replaced.

If a shop says it HAS TO GO TO THE SHOP keep looking as any good tech can do this repair right in your home in about 1 hour---I know as I have done hundreds of them.

IF you can solder and are handy I will give you general instructions on how to do the repair and what you need---some people I talk to can either do it or have a friend who can do it for them---let me know

I can tell you what you will need aside from the parts and how to proceed with the fix---

If all this helped rate this solution---I do this here for free.

IF YOU HAVE ANY QUESTIONS OR NEED ADVICE LET ME KNOW--I am here to help people.

Regards, SD TECH

Posted on Oct 30, 2009

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2 Answers

I just recently changed my lamp in my hitachi 50 VF 820 and the screen has a large blue spot on it. I have done it before once or twice and all went well. Did I possibly put the bulb in incorrectly or is...


No. If the set turns on and you have a picture, the lamp is installed properly. Most of the time the optical block is the issue. The lamp shines directly into it. If the picture was good before the lamp was replaced, it is possible that that replacing the lamp might have dislodged some micro dust build up internal to the optical block and it landed in a concentrated area causing the red and green lcd panels not to pass light through as bright as the blue giving you a blue spot. Unfortunately the optical blocks are not designed to be taken apart to clean. Replacing the optical blocks are expensive. Most costing in the area of $700.00 to $1200.00 for the part. It also is a major tear down to get to the optical block to replace it. Once upon a time Hitachi had a couple of recalls on their optical blocks for various models. I do not know however if this qualified.
I hope this helps,
Skyassoc

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1 Answer

Where is manual control panel for brightness and color on tv


Hi,

I have attached a image where the buttons are located.

You can adjust the brightness by Pressing MENU button---> Picture---> brightness.


3922305.jpg
Thanx

Jul 31, 2010 | Hitachi 42V710 42" Rear Projection HDTV

1 Answer

I have a Hitachi Projection TV 51G500A 2004 ,


These sets have several common problems which are listed below.

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find the fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Apr 03, 2010 | Hitachi 51G500 51" Rear Projection...

1 Answer

I purchased a tv repair kit and replaced the convergence ic chips to fix my convergence problem. put everything back together and now, no picture. I tried magic focus and it works great, the colors are...


As per statement, "the magic focus works great, the colors are bright and aligned" it means the tubes are working ..you need feed a signal to see the picture...the tv video goes muted without signal

Dec 29, 2009 | Hitachi 60SDX88B 60" Rear Projection...

1 Answer

Color has warped


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Nov 17, 2009 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

What are the best video settings for a Hitachi (46GX01B), 46 inch, rear Projection TV (from 2001) in regard to: contrast,brightness, color, tint, sharpness, etc. The setting level goes from 1% to 100%....


The best setting are the ones you prefer the most.In general most sets are optimized for 50% on color and tint and usually 70% or more for bright and contrast.

Nov 08, 2009 | Hitachi 46GX01B 46" Rear Projection...

1 Answer

My Hitachi UltraVision big screen TV (Model# 50UX23KA) does not seem to be getting power. TV goes off without me actually turning it off. Checked outlet abnd it works fine. After a few days I can turn TV...


Hi, this is heat related. you will need to check the cooling fan to see if its operational. if the fan is working, this will confirm a major fault in the power board.

if the cooling fan isn't working, replace the failed fan.

Jun 15, 2009 | Televison & Video

1 Answer

Can't set red convergence on 65" Hitachi


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 24, 2008 | Hitachi Director's Series 65XWX20B 65"...

1 Answer

Zenith IQC60H94W 60 inch rear projection turns off


Hi

in this complaint you have defective power oscillation! thats why your TV On and Off


Thanks!

Oct 23, 2008 | Zenith IQC60H94W 60" Rear Projection...

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