Question about Hitachi 55FX48B 55" Rear Projection Television

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Jumpy Picture on Hitachi 55FX48B

I have a Hitachi 55FX48B that was purchased in early 1998. I am beginning to see the picture "jump" a little - Channel Five more than the others. It is almost like one would want to adjust the horizontal knob in the "old days." It does not happen all the time and seems to happen more when the TV is first turned on. I know the TV is older and wonder if this is a sign that is on its last leg or if there is a simple inexpensive remedy. Thanks!!!!

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  • Charlie Pfeifer Feb 03, 2007

    Thank You!! Great Solution

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  • 1,284 Answers

On older Hitachis the most common jumpy picture is loose connections on the vertical output IC. If you can tap on the main board and get it to act up then this is most likely the situation. I believe the location is IC401 and is located toward the front of the set on the signal panel. Not too tough to repair if thats all it is.

Posted on Jan 31, 2007

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Posted on Jan 02, 2017

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Tv picture almost seems cloudy and no clear picture unless a face is a close up you cant really tell who they are


: SMEARED PICTURE
Cause: DEFECTIVE IX01,XX02,XX03
.............these are oscillator crystals that operate video ic's.......may all need replacing...good success, meder's tv service

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1 Answer

Black and white screen...


The color wheel can cause a black and white picture but not the jumpy or negative look.
Those symptoms are usually caused by the DMD assy which drives the color wheel and is somewhat expensive, most of the time you can purchase the whole Light Engine which includes the DMD assy for the same price.

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1 Answer

Jumpy picture


ck for dry solder joints if you take rear cover off and just lightly tap on convergence ic heat sink if the tv jumps then you have to remove the board and resolder the joints. also if you have a magnifying glass ck all solder joints on board when it is out

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1 Answer

Lamp flickering


Well jumping has nothing to do with lamp so called bulb.
You have what I would call a cold solder joint.
You're going to have to open the set and tap gently to see were it is comming from. If you know anything about soldering they you will know it is not that easy.

Once you think you have found the place were it seam's to be the place were it make's it jump more often, start again to make shure that's the spot and not the hole area.
Then remove the board and resolder,

Good luck
What About Bob
Timmins, ontario
Home of Shania Twain.

Mar 15, 2008 | Hitachi 50SBX78B 50" Rear Projection...

1 Answer

Hitachi 55fx48b


Yes prob but some poeple cant se the def.

Jan 24, 2008 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

How to remove Screen Assembly on Hitachi 55FX48B


take off the speaker grill and take out any screws underneath the screen assembly and pull up and out. the bezel hangs with hooks and then screws in at the bottom

Jan 08, 2008 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

Wont power on


Needs Convergence amps replaced. Also fuses around this board are out. There should be small pico-fuses open around this board(replace)

Aug 26, 2007 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

Jumpy picture


If this set uses a picture tube then your problem may be in the vertical deflection circuit. Also an unstable power supply will cause this problem. Stargazer

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