Question about Hitachi P50H401 50 in. Plasma HDTV

1 Answer

Screen black Power on does not display a screen. The power indicator is blue. The HDMI2 and AV1 and AV4 input signal do not make a screen appear. Other inputs act the same. I can use the remote to e.g. go into standby, i.e. power indicator turns red. I can switch from standby to on "Blue power indicator" but no screen from the input appears. When switching between inputs on the remote control there is an occasional "light up", but no TV picture from the input source comes up.

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  • Hitachi Master
  • 9,612 Answers

Here's the test to determine which board is faulty. With the TV on, as usual, shine a flashlight on the screen to see if there is a faint picture. If there is, then the ballast board for the backlights is bad. If there is no visible picture, then the T-Con board is bad. You can get replacement parts here: TV Parts Universal TV Stands DLP Chips ShopJimmy

Posted on Jun 27, 2017

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Hitachi P42H401 - No Picture or Sound. Some Menus work.

find and push the "reset button"

Posted on Sep 02, 2007

SOURCE: Unit will not turn on from standby

I had a similar problem and it was caused by my cable box being in scart 1 as soon as I changed over to scart 2 the problems went away,

Posted on Jul 24, 2008

  • 187 Answers

SOURCE: Can turn on to red light and get blue light, but no picture

The mainboard needs to be replaced

Posted on May 27, 2009

dsacco86
  • 1077 Answers

SOURCE: Powers up but picture doesn't appear.

Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet.

If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20. And most cases the new part cost less than $15.

I hope I shed some light on the subject for you.

Posted on Jul 08, 2009

Rally Guy
  • 3 Answers

SOURCE: 55HT79 HITACHI BLUE POWER LIGHT BLINKS ON AND OFF.

I can't help you because after 26 months of ownership mine is doing the same thing (started on 7-12-09). Judging by the number of people with the same complaint I believe Hitachi knows that they have bad boards but refuses to replace them for customers unless they are within warranty. It also explains why the merchant that sold it to me in 2007 stopped offering Hitachi in 2008.

I'm disgusted because I'm anticipating a $300-$500 repair bill simply because Hitachi's design did not provide an external way of resetting it. Impossible to get to the menu to do a reset within 12 seconds before it starts the powering on booting cycle again.

Adding salt to the injury, mine is wall mounted and repair people will only work on it if it is readily accessilble when they walk in the door or if it is brought to the shop. Know what a 55" plasma TV weighs? Too much.

Posted on Jul 13, 2009

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