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Posted on Sep 26, 2009
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43fdx15b Hitachi 42in red vertical lines magic focus inop for red

43fdx15b Hitachi 42in rear projection tv. been a great tv. I think it was jarred, and now the left side of screen has red vertical lines, farther apart on left side, getting closer together and disappearing in the center and right side. the Magic focus button works for the other colors but seems to lock up on the red. Help?

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  • Master 647 Answers
  • Posted on Sep 26, 2009
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Joined: Sep 19, 2009
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This is a convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors.Shops usually charge from $200-$300

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NO RED COLOR ON A 43FDX15B HITACHI 52

3 reasons for this.

1st reason the fluid is contaminated and thats why u dont get red.

2nd reason no red drive possibly due to a bad colour driver on the base of the tube neck.

3rd reason the tube is out.
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I have an Hitachi 43FDX15B. The tv worked perfect

sounds like the convergence is out of whack. you will need to call a local repair shop and see if they can realign the color guns inside the unit. this is actually a really common problem with moving a rear projection screen.
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This can be caused by a few things. The red crt/picture tube is going bad, which it would have to be replaced, tube can cost anywhere around $195 and up, if it is available. Another problem can be a bad transistor or IC on the red crt circuit board. Either way it should be taken to a repair shop. The average cost for repair could be over $300.
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Replace Both of your STK ICs they are your convergence ics they are big black ICs will have Part# on them for example STK392-110, if they are 110s use 180s, if 020s use 040s other wise replace with exact same number. To get Parts call Electronix 1-800-223-3205
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http://serviceman.site88.net/index.htm
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Your vertical amp is failing and you will have to get it replaced. If your TV is under warranty, i suggest contacting the shop or manufacturer and get it fixed/replaced.

If not, then you will need to contact a qualified TV repairman to replace the vertical amp for you, as i wouldn't recommend opening the TV set to try a DIY..

Hope that helps. Should you have any further queries, pleas post back, and I will try to assist you as best I can..
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