Question about Hitachi 55HDX99 55 in. Plasma HDTV

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Hitachi 55hdX99 shuts off and turns on by itself repeatedly

Once the TV is turned on either via remote or button on the TV, it is on for a few seconds then shuts off, then turns back on after a few seconds. It will continue this repeatedly until you shut it off again. Remote only activates volume or power. INput button works for a second then TV shuts off again, and on then off, etc... I think its the internal power supply but don't know for sure or where to start.

Posted by frencjas on

  • Anonymous Jul 31, 2017

    sounds like a very similar problem which has just started on my LCD. Looking forward to viewing any suggestions

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5 Related Answers

Anonymous

  • 1 Answer

SOURCE: TH ETV TURN OFF ITSELF

the cooling fan could be going out

Posted on Dec 14, 2008


ginko

Ginko

  • 19396 Answers

SOURCE: HITATCHI ULTRAVISION P50S601...POWER LIGHT BLINKING...WONT COME O

The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

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.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

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

If you want to repair at your own expenses, just locate any good qualified repairer.

Posted on May 22, 2009

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William

  • 188 Answers

SOURCE: Hitachi TV volume won't work

Is the set in hotel mode?

Posted on Jul 24, 2009

Anonymous

  • 1 Answer

SOURCE: Hitachi P42H401 turns on then shuts off seconds later

its most likely the common hitachi fault....its a little resistor that burns out, it happened mainly on the old crt tv's. any tv repair shop should be able to sort it for you.

Posted on Aug 28, 2009

Korede Atunrase

  • 1456 Answers

SOURCE: Hitachi 55HDX99 55 in. HDTV

Hello

Check the settings on your external devices,check the settings on the devices you are having a problem with. For example, if your Blu-Ray player is outputting to 1080p but your television supports a resolution of only 720p, this could cause the audio and the video to slip out of sync.

Try different inputs. If problems persist with external devices, plug them into different ports. The problem may be a bad input rather than a bad TV. Replace cables to make sure that isn't the problem.

Check the settings menu. If the image on your Hitachi TV looks too dark or too washed out, adjust the picture settings in the television's main menu. Sometimes the factory settings on a Hitachi TV aren't in line with the needs of the user

If this does not solve the problem,Press Menu Button, then in sequence 4, 7, 2 and 5.You are now in the Service Menu

Goto Options and press Factory Reset, it will only take a couple of seconds

Press Escape, Standby and Unplug from Mains Leave for 5 mins and turn all on again

If the problem persists, Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. They can be found online.

Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.

NOTE; If your tv is still under warranty,do not open the tv as this may void warranty.Best option will be to send the tv back to the dealer for replacement.

Posted on Dec 22, 2010

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Try to turn on via remote or button on set. Only a green flash on front. Nothing else. Can I fix it?


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Code number to program my bell remote to this tv


01768,11034,11265, 10178, and 11748.
Or you can:
1. Press "TV" button
2. Hold "P" (program button) till the "TV" button flashes once then twice
3. Enter 9 9 1, and the "TV" should flash twice
4. Aim the remote at the TV and hold the Power button down for at least 3 seconds. (Remote automatically goes to first code but it probably wont work so go on to step 5)
5. Press CH+ repeatedly till the TV shuts off and stop immediately!
6. Hold "P" for 2 seconds
7. Hold "Select" for 2 seconds
8. Hold "P" for 2 seconds
9. Hold Power for 2 seconds and TV should turn back on
Found at:http://wiki.answers.com/Q/What_is_the_universal_remote_code_for_a_haier_tv
Be sure to rate macapplezoo 100% or whatever you think I deserve!

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Hello!! There are a few ways to get this working to shut off the TV. I put some instructions at the bottom here. These are instructions for a power scan, which scans the TV for the correct code.


1. Hold down the Clear TV button until all lights at the top of the remote light up
2. Press the red TV POWER button
3. Press and release the up arrow on the remote about once a second until the tv turns off.
4. When it turns off, press the # (Pound) button
5. Try powering the tv on/off, and try the volume. If one or more of these functions do not work, start over at step 1 again.


Becki Barned
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I have dish network and I am unabe to get the dish network remote to control the tv power and volume. Whenever dish gives me a code it works for a few days then the tv rejects it. I have a 27 in orion...


1.) Hold down the clear "TV" button on the remote for four seconds, then press 500 pound ( #)
2.) Hold down the clear "TV" button on the remote for four seconds, press the big power button once.
3.) Press the channel up button once per second until the TV turns off then press pound (#).

If this doesn't work and you have an LCD TV turn off the back light. As it is probably causing interference this is found in the TV menus.

Daniel Busa
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I suggest you try these steps..

1.Turn the television set on by pressing the "Power" button on the set.

2. Find the "Code Search" button on the Philips Magnavox remote. This button will be labeled or will be a different color than the other buttons on the remote (depending on which Philips Magnavox remote you own)

3. Hold the "Code Search" button down for about ten straight seconds. The light on the Philips Magnavox remote should then stay on.

4. Starting pressing either the "Up" or "Down" channel button on the Philips Magnavox remote. Continue pressing the same button until the television responds to the remote. It could take a few minutes for the channel to change so you'll need to have patience when searching for the remote code in this manner.

5. Press the power button on the Philips Magnavox remote once the channel has changes. If the device shuts off, press the power button again to turn the TV back on. If the TV turns on, the remote has been programmed correctly. Repeat the entire process if your remote is not programmed.

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2) when all buttons illuminate press 500 into remote
3)press pound sign
4)Hello, please help..
5)hold town tv button again.
6)when all buttons illuminate press big red power button
7)press up arrow once a second until tv shuts off
8)press # pound sign
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10)if tv doesnt turn back on try again from step 2 but use down arrow instead

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2) when all buttons illuminate press 500 into remote
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5)hold town tv button again.
6)when all buttons illuminate press big red power button
7)press up arrow once a second until tv shuts off
8)press # pound sign
9)try to turn tv back on w/ big red power button
10)if tv doesnt turn back on try again from step 2 but use down arrow instead

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PLEASE HELP!!


In all likelihood, the TV's Main Power ON/OFF switch is faulty. Get it replaced.

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