Question about Toshiba CF32H40 32" TV

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Horizontal line May 03, 2007 Toshiba manufacturer; Good day, my problem is a black screen with one horizontal line at the center of the screen. the power supply is good and the horizontal ic is also good sincerely yours; olao My Toshiba CF32H40 was working perfectly fine this morning, but having just turned it on (from stand-by) I now get a black screen with an extremely bright horizontal line in the center of the TV. My TV is 12 years old.

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5 Suggested Answers

techman
  • 3130 Answers

SOURCE: No picture...Sound is fine.

There are no tubes, except the picture tube, to replace.. itys a solid state set. your problem is most likly thefiliment circuiut on the crt board, or maybe a verticle problem. I would say with A set of this ventage, will most likly cost to repair more then the sets worth.

Posted on Aug 28, 2006

  • 81 Answers

SOURCE: black screen in middle of picture

go tothe menu, caption, take it off the text mode. this should solve your problem

Posted on Apr 07, 2007

premtech
  • 934 Answers

SOURCE: a bright line on the screen

A line running across the screen like that and then returning to a picture I would guess is the vertical IC has some poor solder joints. The vertical IC in that unit IC401 is an LA78041 a seven pin IC that is mounted to a metal heat sink. On the foil or under side of the board take a careful look at the pins of that IC and any that look suspicious carefully re-flow some solder over.. Careful not to keep your iron on the pin too long.. And if have to re-solder several take some time between them to allow the IC to cool so you don't damage it.. Good Luck Bill

Posted on Jun 10, 2007

premtech
  • 934 Answers

SOURCE: horizontal line

Olao,
Your symptoms suggest that your vertical Ic401 has failed. In your Tv that Ic is a LA78040N-E Toshiba p/n# AE002783. Also it would be wise to test the feeder caps in that circuit, especially anything in the 100uf range.
This is not an expensive repair for a qualified shop. The Ic is under $20.00 dollars and caps are a buck or two - the labor will be your most expensive element of the repair and it shouldn't take an hour start to finish..
Hope this helps!
Bill

Posted on Dec 01, 2007

  • 2 Answers

SOURCE: Toshiba 27D46 Black Screen - White Horizontal Line

I fixed the problem by taking it to a repair shop

Posted on Apr 26, 2008

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Horizontal line May 03, 2007 Toshiba manufacturer; Good day, my problem is a black screen with one horizontal line at the center of the screen. the power supply is good and the horizontal ic is...


Olao,
Your symptoms suggest that your vertical Ic401 has failed. In your Tv that Ic is a LA78040N-E Toshiba p/n# AE002783. Also it would be wise to test the feeder caps in that circuit, especially anything in the 100uf range.
This is not an expensive repair for a qualified shop. The Ic is under $20.00 dollars and caps are a buck or two - the labor will be your most expensive element of the repair and it shouldn't take an hour start to finish..
Hope this helps!
Bill

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