Question about Toshiba 27DF46 27" TV

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No picture, only sound

When I turn on the TV the sound is on but the screen is black except for a narrow horizontal line across the middle and you can see a tiny bit of the picture . All inputs have been checked and they are all good. My TV is only 14 months old. This problem started about 2 months ago but only did it occasionally. If I turned the TV off for a couple of minutes and then back on, it would work. Now that doesn't work at all. I had the cable company here to check it out and he said he thinks it's the picture tube. What do you think? I also called a TV repair service and he said this happens with a lot of Toshiba TV's

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Re: No picture, only sound

The set has a shorted vertical output IC, probably a TA8427k. The capacitors around the heat sink of this IC dry out and cause the IC to run hot. The correct repair is to replace the vertical output and the electrolytic capacitors near it. Also use 105 centig instead of the original 85 centigrade. The is some time a pico fuse or current limittng resistor which must also be replaced. This a common problem with Toshiba and is not a bad picture tube. The usual cost of this repair is around $120-150 depending on the integrity of the technician. Scrivitron

Posted on Jun 29, 2007

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Re: No picture, only sound

I sorry but i tend to agree with the cable guy. It s not uncommon. If you see a dot on the screen or the Pic. is reduced to the center of the screen it is a hint that there is something wrong with the pic tube. Not necessary the pic tube but something along the lines. I would call Toshiba and find out about the warranties on there product. Good luck.

Posted on Jun 18, 2007

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