Question about Hitachi 50GX49B 50" Rear Projection Television

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No power on Hitachi 50UX588

There is no power I tried to plug and unplug the unit from the power source and still no power. The led light turns on and in 5 seconds it goes out.

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  • ces mercado Jul 22, 2007

    If any of these is correct...what should be done, then? Is it still fixable? What parts do we have to buy?

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  • 23 Answers

Try STK 110, 120, 150 or 180....the convergence amplifier chips can cause most Hitachi projection screens... Also possible corresponding resistors. NTE makes these type chips but cant recall part #. THe above mentioned are Sanyo design/part# These leds help determine a fault in their assigned part of circuit

Posted on Aug 01, 2007

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Most likely have a regulator problem. Remove rear cover, look down on the main chassis, turn tv on watch the board to have some colored led's lit, usually a red one and couple of green. If the red is out, its your regulator, if a green one other problems off the circuit with green led are causing the tv not to power up.

Posted on Jul 22, 2007

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1 Answer

Tv wont turn on


With set unplugged remove rear cover and follow the power cord to the fuse--good or bad? This set should also have some led lights there that are green or red---look to see if any are lit or if when plugged in with back removed which come on or go off instantly, the reason I ask is those are each tied to a voltage source and will point to where the problem MAY be.

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Try first unplugging power cord for ten minutes, it looks more like your power unit has gone.

Sep 02, 2008 | Hitachi 55FX48B 55" Rear Projection...

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I turned my hitachi tv on and i have no sound or picture what can i do ?


Are you getting the red led light? If not, please check the power outlet for any loose contacts. Try the TV on some other power outlet. If the TV does not work still, cool it off for 48 hours, after removing the plug and retry.

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Please let me know whats the model number of the tv so that I can tell you what the PCB LED diagnostics are pointing to. It sounds like a power supply or Main board issue so I would like to confirm which one of them it is.

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I my projector is new one used for 4 hrs, when i try to turn it on it just has a blinking green light. Please help Solve It! .


The blinking green light means the unit is either Powering On (Warming Up) or Powering Off (Cooling Down).

Powering On the Projector
1. Remove the lens cap.
2. Securely connect the power cord and signal cable. When connected, the ON/STANDBY LED will turn Amber.
3. Turn on the lamp by pressing " " button either on the top of the projector or on the remote. The ON/STANDBY LED will now turn Green. The startup screen will display in approximately 10 seconds. The first time you use the projector, you can select your preferred language from quick menu after the startup screen displays.
4. Turn on and connect the source that you want to display on the screen (computer, notebook, video player, etc). The projector will detect the source automatically. If not, push menu button and go to "SETUP". Make sure that the "Source Lock" has been set to "Off". If you connect multiple sources at the same time, press the "SOURCE" button on the control panel or direct source keys on the remote control to switch between inputs.

If you are still unable to get the unit to turn on, try unplugging it for 10 minutes and plugging it back in. If it still ceases to work, contact Optoma here: http://www.optomausa.com/rma_policy.asp
Their Technical Support line is 1-888-887-5001

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

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1 Answer

Cannot get power to the unit the light indicating power is out


I have the same model as you. I have two transmitters and three headphones actually. Please see below:

Plug in the transmitting unit into a good working power outlet. Make sure you have the audio connected to a loud source. Turn on the source device producing the loud audio to be transmitted to your headphones. Now see if the transmitting unit's LED light is on. Check headphones for audio. (May have to tune in the headphones and adjust its volume as well).
I recommend that the source of your audio have its built-in speakers off, while still providing audio out to your transmitting unit, via an external audio output. Check your source manual or look for audio jacks on the front or back. There may be a setting to turn this on and for the main built-in speakers to be turned off as well.

If this does not work, unplug the transmitting unit, and then plug it back in again, after waiting for about 10 seconds - all while audio is being provided to the unit. It should come on.

Apr 24, 2010 | RCA WHP140 Consumer Headphones

1 Answer

Power goes off!


I have the same model as you.

Plug in the transmitting unit into a good working power outlet. Make sure you have the audio connected to a loud source. Turn on the source device producing the loud audio to be transmitted to your headphones. Now see if the transmitting unit's LED light is on. Check headphones for audio. (May have to tune in the headphones and adjust its volume as well).
I recommend that the source of your audio have its built-in speakers off, while still providing audio out to your transmitting unit, via an external audio output. Check your source manual or look for audio jacks on the front or back. There may be a setting to turn this on and for the main built-in speakers to be turned off as well.

If this does not work, unplug the transmitting unit, and then plug it back in again, after waiting for about 10 seconds - all while audio is being provided to the unit. It should come on.


Remember that if the audio to the transmitting unit is quiet OR off for about one minute, the transmitting unit will turn off and you will hear FM noise, loudly, on your headphones. This is due to the "lack of audio" timer built-in to the transmitting unit.

May 18, 2009 | RCA WHP140 Consumer Headphones

2 Answers

Hitachi 50dx10b


Try unplugging and plugging back up the power cord to reset it.

May 14, 2008 | Hitachi 50DX20B 50" Rear Projection...

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