Question about Hitachi Televison & Video

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I have a older hitachi ultravision projection tv and it is giving me a slite dual image on the screen almost like its out of align.

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  • gearheadx Dec 26, 2008

    I have replaced one of the ic. How do you realign it

  • gearheadx Dec 26, 2008

    The model # is 50UX26B

  • gearheadx Dec 26, 2008

    Were are the knobs located to align it

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  • Hitachi Master
  • 19,396 Answers

Here is convergence alignment procedure for older hitachi projection TV.


If the convergence is badly out of alignment, and the alignment procedure does not fix it, that is because there is an internal fault, either convergence IC, or the faults listed on website below.


HITACHI

Posted on Dec 27, 2008

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  • Master
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I have an hitachi too but mine works....the controls for aligning it are in front behind the speaker casing..

Posted on Dec 27, 2008

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  • Master
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There is a switch you have to push inside the tv. this gets you into alignment mode. theres a lot of buttons you need to be exact on so you don't accidentally erase the data. you should get a service manual before you procede. to get to the button, open the front panel (take off speaker grille) and take out 4-6 screws on the board behind grille. inside on the front most part of the circuit board youll see a tiny switch... its on the left side when you look into the front. don't touch anything but that.. if you click it the screen will change to convergence lines.. the button gets you back out. to move adjustment positiions use 2, 4, 5, 6 like the arrow keys on a keyboard.. use the joystick or arrows on the remote to move data. 0= red
input = blue
cc = green -- or some other button by there...
*be careful.. if you hit the pip buttons you will save or erase data.
remember mute button always goes back during saving
ie - if you hit pip mode and it says rom write, push button again to write data ... if you hit it and you get rom read !!!push mute to go back!!! so you dont erase everything.. you can use this to trial an error to find out which pip button will save..

service manual will work best

Posted on Dec 26, 2008

  • thielectronick
    thielectronick Dec 26, 2008

    i doubt it has any knobs.. hitachi has used microprocessor controlled convergence alignment for the last 15 years i believe.

  • thielectronick
    thielectronick Dec 26, 2008


    2.7.5 Convergence point adjustment

    Adjustment preparation

    (1) Select color to adjust.

    “INFO” - Green

    “0” - Red

    “ANT” - Blue

    (2) Use 4, 6, 2, and 5 to move the cursor position

    (dotted lines).

    (3) Use thumb stick to move the convergence point.



    (7) When convergence is acceptable, press PIP MODE

    to write data to ROM memory. ROM WRITE? is

    displayed to alarm system that ROM will be

    overwritten with new data. Press the PIP MODE

    button again to write displayed data to ROM.

    (8) DATA WRITE TO ROM will take approximately 4

    seconds and no picture will be displayed.

    (9) Green dots will be displayed when operation is

    completed.

    (10) Press MUTE to return to convergence pattern, then

    confirm again convergence is acceptable.

    (11) Press PIP MODE (ROM WRITE) mode, then press

    PIP CH to initialize sensor data positions.

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  • Master
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Http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm click the link
-========-======== You can try getting into it and if so, try adjusting the color, contrast, etc. once you enter.

You can find out how to enter by going to this site:

http://www.fixyourowntv.com/servicemenu.php

If that does not help, you may find the video processing and color separators, drivers or matrix is all messed up.  This is usually a function of what is loosly called the "jungle chip".  A big integrated circuit that manages all these things.  The problem area could be within the chip itself or the hundreds of components that hang outside the chip.  A tech will need to take measurements to find out the real problem area, in this case.

Does this help?  The set is getting along in years. You may think twice about pouring much money into it.

Posted on Dec 26, 2008

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  • Expert
  • 100 Answers

It can be realigned by adjusting the small knob like buttons on the board or else u will hve to replace the convergence part.

Posted on Dec 26, 2008

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  • Hitachi Master
  • 5,138 Answers

Replace both STKs-- STK392-110s do not hold up need to up grade to 180s and you need to ck low ohm resistors around ICs.if they are 020s use 040s.How to aline convergences on TV depends on model number.What is your model/chassis it will be on back of TV.

Posted on Dec 26, 2008

  • ladywinn
    ladywinn Dec 27, 2008

    I am wondering how many on this web have A Degree in Electronics?

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Before replacing the main board IC, go to the manual for your t.v. an see if you have a way of adjusting the convergence (alignment of the three lenses that make up the Red, Green, and Blue colors that give you millions of color options). Read back in a sec and I will give you a link to the manual.

Posted on Dec 26, 2008

  • 1Guru
    1Guru Dec 26, 2008

    can you give me the model number of the T.V.?

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  • Expert
  • 327 Answers

The ic on the main board needs to be replaced and it needs reallignment to make it  proper.

Posted on Dec 26, 2008

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