Hitachi 50V500 50 in. HD-Ready LCD Television Logo
Posted on Aug 07, 2009
Answered by a Fixya Expert

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Hitachi 50V500A cooling fan for LAMP doesn't turn off

About "Hitachi 50V500A cooling fan doesn't turn off",SD tech guy sad it is two fans inside so,I opened back cover and it always work fan for lamp, not for circuit board. What is conclusion? Thank you.

  • pilot762 Aug 08, 2009

    I already fix it myself ! Need to open back cover, and on circuit board where power cord goes ( located on left side if you look from behind TV) it has power relay. Because contact in this relay little burned, that's why power circuit board and fan for lamp still on. Solution: open back cover , remove speaker, remove circuit board,open cover of that relay, clean contacts by fine sandpaper, assemble back and done! I made picture if anyone want it, send email to [email protected].

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  • Posted on Jun 24, 2010
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After i replace the lamp on my Hitachi50v500a worked everything then i turn it off.After 1h wanted to turn it on again and it shows (TEMP) light is that a lamp fan or something else.Please help how to fix it by my self.Coz no money to call the tech.

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  • Hitachi Master 14,553 Answers
  • Posted on Aug 07, 2009
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Set has at least 2 fans---if the lamp fan never shuts off you have a real circuit problem

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I have not seen this model Hitachi but I have never seen one with 2 fans for the lamp---in all cases there is usually only one-

Hitachi only offers service manuals online and only to authorized repair shops with a user name and password. If two fans ARE involved it is unlikely both would be bad---flying by the seat of our pants I would suggest if possible to check the voltage at the fans---or even spin them to see if they will suddenly work---dirt can cause a fan to slow or stop and the set would either shut down or issue some kind of "fan failure" or temperature warning.


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