Question about Toshiba 27AF41 27" TV
After using the TV for about 6 years, one fine day all we could see on the TV was a bright horizontal line across the screen. A couple of times the image did return to normal for less than an hour and then went back to a bright line. We can't watch TV or video's. My father-in-law had an exact similar problem on another brand tv in India and mentioned technician found a lose contact on the PCB, had to re-solder a connection and it works fine now. Anyone knows how and where to fix this?
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
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Posted on Jan 02, 2017
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