Question about Hitachi 60UX54B/55K 60" Rear Projection Television

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Will not stay powered on

I have a Hatachi 60UX54B and if I leave it unplugged for a few minutes & then plug back in the set will power up for a few minutes then shut down and will not power up again. It seems that when the unit warms up the the power drop out. Thanks in advance, Mark

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Does the convergence look OK before it goes out/ Have you opened the set to see if there is any liquid or any staining on the printed circuit boards right under the picture tubes? This set is very common for the CRT coolant to drip out of the tubes and fall onto the printed circuit board. good Luck

Posted on Sep 05, 2007

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Hello, please check Q710 in high voltage circuit. If you need more info please advice. Arpi

Posted on Aug 12, 2007

  • Arpad Kothai
    Arpad Kothai Aug 12, 2007

    you can also check/replace integrated circuit IC401, capacitor C715, I601, IK04, IK05, D915.
    Change R074, R075 from 47K to 15K.
    Add a 100pf capacitor, one for SDA3 line other to SCL3 line.
    Check that C128 is a 22uf/16V.

    Best regards,



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