Question about Hitachi 42PD7800 42 in. HD-Ready Plasma Television

2 Answers

No power The Plasma TV was working fine last night. We turned it off normal and this morning did not have power at all. I try different outlets but no solution. Any idea what is the problem?

Posted by on

  • 1 more comment 
  • Abbyel2001 Jun 10, 2008

    The make and model is Hitachi 42PD7800. I checked the fuse and the power board but neither one is the problem. Is no voltage reading at all in the TV. It is power on the wall outlet but that is all.

  • ael_2 Aug 17, 2008

    Hi, My 42PD7800 Plasma experienced a power surge when the mains plug was bumped causing intermittant circuit from the mains supply. The unit was on at the time. I have checked the 6.3amp fuse which is blown but replacing the fuse did not rectify the fault. I can see no obvious issues with the Power Filter board.

    Hope you can help.

  • ldgreenan Apr 27, 2009

    my problem is no power at all at the plasma, when you switch the power on you can hear the surge, then nothing, no stand by light no nothing!


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 47 Answers

First off I did not see make or model. When plasmas die you have failure in either the power supply of the sustain boards. Do you have any voltage readings from va or vs ?

Posted on Jun 09, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 574 Answers

Check fuse on powerboard. Look for bulged capacitors on power board. Might have a screw in fuse access on the rear panel.

Posted on Jun 09, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

My set is plugged into a cable box. the tv will not turn on either manually or with the remote.

Plug the power cord directly into a wall power outlet, and make sure that the standby light is lit (turn it on/off manually to see if anything changes). If there isn't any light, then it's most likely broken.
If the TV works again, being plugged into the power outlet in the wall, then the problem is with the cable box (i bet you figured that out too).

Jul 06, 2014 | Envision L32W761 32 in. LCD TV

1 Answer

Sanyo plasma # 42840 will not turn on. swaped boards & it still does not work

Which board did you swap? I would first suspect the SC and SS boards first (or the x and y sustain boards) different termanology for different brands it seems. I would try the x main first. The easiest thing to do is unplug the power from the x main and then plug in the power cord, if it starts up, (you still wont get a picture but wont click.) you know its that board, if same result, try the y main.

Oct 02, 2012 | Sanyo DP50747 50 in. Plasma TV

1 Answer

Won't power on...

The TV probably has an internal short, most likely in the power supply. If you open it, you will probably find the main fuse is blown (which is why it didn't trip the breaker again. Don't bother replacing the fuse until you find and fix the short - you'll just blow the new fuse and probably trip the breaker again.

Dec 08, 2009 | Flat Panel Televisions

1 Answer

Sylvania 6632LG won't turn on.

The power supply may have gone out, that is the first place to look, look for blown fuse, burnt parts, bad capacitors.
Please post back what you find.

Nov 13, 2009 | Sylvania 6632LG 32 in. LCD HDTV

2 Answers

LG 32LP1D TV no power

Check the fuse on the power board. If ok change the power board.

Nov 01, 2009 | Flat Panel Televisions

1 Answer

Tv wont turn on worked fine last night

If there is no power at all, then the problem is likely the power supply unit.
The PSU must be tested, then eventually replaced.

May 30, 2009 | Spectroniq PLTV3250 32 in. LCD TV

1 Answer

No power no led's

check there is a problem with SMPS and fuse/power socket problem thank u

May 24, 2009 | Spectroniq PLTV3250 32 in. LCD TV

Not finding what you are looking for?
Hitachi 42PD7800 42 in. HD-Ready Plasma Television Logo

330 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68352 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 2 Expert

223 Answers

Are you a Hitachi Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides