Question about Hitachi UltraVision CineForm 55VG825 55" HDTV

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Hitachi blue convergence problem. Parts?

I have a hitachi 51uwx20b and the blue convergence is bad.... I need to know if I need to replace the entire circuit board or just some parts? Also part numbers would be very helpful. And any other help or advice would be Great!

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  • Suctoes May 31, 2008

    I went in and replaced the IC chip sets.... Now it works great.

  • GinoD Jun 16, 2008

    I have a hitachi 53 inch that does not do auto convergence. When the button is pushed i get a message on the screen that says STATIC MODE. Can someone help me out on this?

  • ttommyturbo Jun 25, 2008

    55" hitachi bule color bowed out will not line up tryrd to ajust but now i have 3 color shadows how can i get this ajusted from the circuit board tv repair person wants too much to fix this anolog projection tv please advise

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  • Master
  • 2,712 Answers

1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try plugging in the TV through the USB on its panel to a computer or USB charger, and it may work. However, this is only a temporary solution.

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

4. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.

5. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic (not same model):
Hitachi blue convergence problem. Parts? - d4dea15.jpg
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.

REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

Hope that helps!

If your issue is not resolved, please do not assign a rating just yet. Please post back as to what steps you took, results, etc, and I will try to assist you further as best I can. I am here at your service.

P.S. -You can rate this solution with one of four votes, if you feel your issue is resolved (remember that at times a bit of to and fro dialogue may be necessary to resolve an issue).

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IrishDruid

Posted on May 05, 2008

  • Swilin Sampson
    Swilin Sampson May 31, 2008

    Hello,





    This thread has gone 14 days or more without a response.
    Please close the thread with a “FixYa” or “Helpful” rating.





    Or post back with latest developments, what steps you took,
    etc. and I will assist you further as best I can.





    Thank you.


    IrishDruid




  • Swilin Sampson
    Swilin Sampson Jun 14, 2008

    Kindly close this thread with a Fixya rating if the issue is resolved. Thank you.

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