Question about Toshiba CF32H40 32" TV
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Posted on Jan 02, 2017
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
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
SOURCE: horizontal line
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!
Posted on Dec 01, 2007
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