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Question about Hitachi 50FX48B 50" Rear Projection Television

1 Answer

On and off rear projection 50''

My tv turns on and remains on for sometime then for no reason it turns off. I have a cable box hookedup to it. this problem began after a short power outage. I have disconnected the surge protector and plugged the tv in to the wall,problem slowed but did not completely stop.Its almost as if the timer is stuck or something, please help.

Posted by Dwayne Houston on

  • Dwayne Houston Jul 20, 2007

    No to the red light remaining on...I think it may be one of my components. I have replaced the cable box and removed my ps2 gaming system.We'll see if this does it,,,thanks

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1 Answer

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Does the red light remain on on the front? Hitachis are notorious for bad relays.

Posted on Jul 18, 2007

  • Anonymous Aug 03, 2007

    Might have a bad power regulator if not the relay, I would replace the current sense resistor as well.

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Turns on by itself?
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This would be due to a bad power supply unit inside check out these folks they offer reasonable repair rates. www.teexp.com I sure hope you do find a solution with them.. Please don't shoot the messanger now.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

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If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

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Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

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Closed Captioning

Does this happen with a HD cable box and does it happen with a DVD or VCR playing on it?
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