Question about Hitachi 55HDT52 Plasma Television

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Hitachi 55HDT52 Will Not Power On AT ALL!!!

Hello! I have a Hitachi 55HDT52 plasma television and it up and stopped working on me today. The television is roughly 2 1/2 to 3 years old. I have had no problems with it until today. There were no advance warning signs at all leading up to this. I just watched a blu-ray on it last night and the picture and performance was flawless. This afternoon the tv was on and without warning it tuned itself off. Even the standby light is not responding. It basically is acting like it is not plugged in at all. I tried swapping out the power cable and tried another outlet on the off chance that might fix it. Everything else plugged into the surge protector appears to be working fine. I have come to the conclusion that I may be forced to track down an authorized Hitachi repair center and pay what I imagine will be a pricy repair bill. I was hoping that maybe someone has heard of this issue before and might have a suggestion. Thanks. Hi Bradley_64 I have the very same problem the only difference is I didn't use the blu-ray. I watched tv last night into the early morning, I fell asleep, the tv went off and this morning I can't turn the power on except thru the reset button thered light wil come on,then green blinking light then off again...PLEASE,PLEASE, PLEASE HELP ME...I don't have very much money, just went thru a very bad divorce. thanks in advance heavenlyscents58

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  • Anonymous Feb 25, 2009

    I have the same issue with the same TV with only one twist....the TV will power but only black screen with audio. The TV (55HDT52) started blacking out at about 2 1.2 yrs old. Would unplug and plug back in and the TV would work again. Several months later the TV screen went black and now only audio works.

    Any techs out there know what I need to check to see what went out. Power board?, YSUS board?,

    Any help would be appreciated. The boards seem to run 250-450 dollars. :-(


  • SCOTT J May 11, 2010

    look on the back through the holes - you will see several leds light up - let me know wich ones never light up



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First, try the unplug it, wait a few minutes, plug it in trick, several times. If that doesn't work try pressing the power button and slap the back left side of the set several times. Sometimes, this will shock the ballast and/or lamp into working.

Try checking the wires as well if its pinch or not and try to take out all cables from other devices from the back

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Join the crowd.

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You have problems with the SDR Printed Circuit Boards

You need change them

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SOURCE: Hitachi P50T501 plasma tv powered off.

Your TV has a bad power supply on it. Ask the repair service technician to fix your tv.

Posted on Jul 27, 2009

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1 Answer

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The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
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Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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