Question about Hitachi 55FX48B 55" Rear Projection Television

1 Answer

Hot to converige

Ok i have a toshiba tz55v61 just replaced both IC and now the top left corner is the only thing out and that is the red

my lay out is like this
left to right
top 123
mid 4+6
btm 789

the "1" is what i am having a problem with the red will move left and right but not up and down all of the others are linded up correct.

when i 1st started to hook the board back up got all the wires put back in to place but i forgot to twist lock the 4 wired that look like spark plug wires back in and the red "1" jumped then i whent back and twist locked the spark plug wires things and this is where i ended up.

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  • rob_jensen Nov 18, 2008

    sorry



    and thanks for all of the help to come

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1 Answer

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  • Hitachi Master
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SOURCE: Hitachi 50FX20B 50 inch: Blue Convergence --will not adjust

You need to change convergence amplifiers. Should be no problem for a professional

Posted on Apr 09, 2009

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SOURCE: 3 resistors and IC's replaced, still have convergence problem

Do you have B+ and B- voltages to the convrgence circuit? What is th Brand and Model and I can tell you where to look.

Posted on May 02, 2009

pilot210
  • 39 Answers

SOURCE: 43FWX20B. Convergence problem.

Look for hidden screws in the board... that's all I can say from experience. Plus, for the three red HV leads, Push down into the block and turn. This should release them if there is no other visible means of mechanical retention.

Posted on May 18, 2009

freetek
  • 5568 Answers

SOURCE: Hitachi Ultra Vision 61UWX10BB Will not power up Red led flashes

Your repair didn't address the failure. It is much more likely (in the absence of video and sound) that the power supply has failed.
The items you replaced affect convergence and have nothing to do with the audio section or the set's ability to receive signal. The power supply failure will diasable everything.
Look for a separate board with larger-than-average components, some cylindrical (capacitors), some block-shaped (chokes and transformers). And you may be able to recognize its relationship to the AC input line.
Locate the assembly number which may be on a paper label or just printed in ink on the board; any that appear to have been part of the etched traces will be only the empty board number, not the assembly.
Removing and replacing this assembly can be done by most everyone using a little common sense and just plugging in the connectors where they belong. Call your Hitachi service center and ask about potential repair or replacement costs. If you can score a new board, don't throw away the old one since the new board will be as crappy as the original. This way, you will have time and opportunity to find an independent reapir service for these and have a spare on hand for . . . sorry, the next failure. These things aren't 'your father's TV', they die much more often.     

Posted on May 25, 2009

video-tek
  • 150 Answers

SOURCE: Hitachi 43fdx20 power supply removal to replace Convergence

Hi, doesn`t need to be removed and I strongly advise you to not remove them. That flyback is no longer for sale, if you break any of the tabs high voltage will leak and arc all over the place. the entire board assembly should be slid back towards you and then lifted straight up so your looking at the solder side of all the boards, unsolder the ic`s, r&r with new ic`s, be certain you use new heatsink compound on new ic`s or they will fail, questions? email me, gl, video-tek

Posted on Jun 02, 2009

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