Question about Hitachi P42H401 42 in. Plasma HDTV

2 Answers

Hi, I have a Hitachi Plasma P42H401a No Power at all my niece plugged i the Wii console while power was on now it will not Power up at all, Could it be the Main Digital Board or the Power Supply Board? I all ready tried this procedure it did not work. 1. Press the POWER SWITCH (ON/OFF SWITCH) once.2. If there is still no power, wait 30 seconds and press the POWER SWITCH again.3. If there is still no power, unplug the power cord from the wall. Wait 30 seconds and plug the power cord back in. Press the POWER SWITCH again. Thank you!

Posted by William Bias on

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2 Answers

Opal Dunn John Finnegan

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Does your plug have a reset on it?

Posted on Mar 09, 2014

  • William Bias
    William Bias Mar 10, 2014

    No!

  • William Bias
    William Bias Mar 10, 2014

    No! But I am going to check the power supply Thank You!

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rtiger54

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I have an element flat panel and the power went out. I opened the back and checked the power board for burnt components and blown capacitors. I found a blown cap. I removed the board, unsoldered the bad cap and soldered the replacement to the board, plugged everything in and voila power restored!

Posted on Mar 12, 2014

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Anonymous

  • 186 Answers

SOURCE: Hitachi 42HDS69 42 in. Plasma... Problem

Describe the past - How did it fail? One day or acting up for a while? Could be a weak power supply - a bad capacitor on a power supply too. Look for popped up capacitor top inside.

Posted on Apr 29, 2008

freetek

Steve Allison

  • 5569 Answers

SOURCE: Hitachi 50"plasma model 401 wont power up

If it's failing to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself. 
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
 
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
 
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself but it will likely have the same problem eventually unless they have altered the design.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

Another possibility is a close lightning strike and the factory surge protection is not up to preventing damage from those.

Posted on Mar 30, 2009

Anonymous

  • 1 Answer

SOURCE: intermitten problem with hitachi plasma on power up

well aparently all you do is fish for customers to buy into your sevice!
I DIDNT GET ANY HELP FROM YOU GUYS, TAKE YOUR "FREE" TECH SUPPORT AND SHOVE IT UP YOUR ***!!!!!!!

Posted on Nov 13, 2009

Chi Chu

  • 8457 Answers

SOURCE: Hitachi Plasma 50 inch H4011 series just went off

Power supply board is dead.Replaced the power supply board,Ur tv will get the power back.Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for replacement.

Posted on Feb 21, 2010

Testimonial: "Thanks. It must be pretty easy if a teenage boy can do it. "

Anonymous

  • 33 Answers

SOURCE: I have a Hitachi P50H401 plasma TV ,when you hit

unplug the unit for a while like one hour or so.

Posted on Sep 03, 2010

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    1 Answer

    Hitachi power suply p42h401a is damage


    I have a working power supply for your TV if you're interested.
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    Hi: This could be caused by a surge that may of damaged the Power supply unit. Replacing the power supply board is a good option at this point, you did not mention if you are able to watch the set, but if so and this is happening when you turn off the set the the system control board which controls the power on/off of the power supply may also of been affected.

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