Toshiba TV CX2789K Horizontal Line

sounds lie a couple bad drive Ics on the buffer boards. You can get replacement buffer boards and free technical assistance from www.tvrepairworld.com

Considering it is a 32 inch set and costs now under 300 dollars it may or may not be worth fixing.

To give an educated guess: either whatever it uses for an inverter board may be bad or damaged OR even the main board that processes all signal into or out to the screen may have either a bad connection(unlikely but possible) or be causing this.

A fatal issue could be something wrong in the screen unit (panel) itself.

I gather set is not under any warranty at this time.

No,Ur vertical/horizontal IC is shorted or cold soldiers.Could be the parts that support the IC is also.

Hello bdedrick708,

If what you are trying to say is that you have a 1/4 inch horizontal line across your screen, this means that something in your vertical deflection circuit has failed. This could be the vertical oscillator, the vertical output processor, the vertical coupling capacitor, or the vertical section of the yoke transformer.

If what you are talking about is a vertical line from top to bottom then you are possibly talking about a failed horizontal section of the yoke transformer.

Why so little about the horizontal section of the yoke? That is because if the horizontal section fails completely then you would lose high voltage and no line would be present because you would not have raster (screen light).

In any even check the yoke transformer first. Then work back from there.

I hope this helps,

Thank you,

Shuttle83

llc.com/">http://www.electron-age-technologies-llc.com

replace the vertical ic, LA 7833 and four capacitors near it, i encountered this last two days.change the parts and it ok now.
cost of this parts is about $20.00

Have you tried with a new scart or htm lead?

Unplug the tv wait a minute .Plug it in turn it on see if that fix the problem. these tv are computers and can go hay wire.just like a computer ,some times a reboot will fix things for a while.make sure you have a good clean source of power at the receptical and your not having power spikes or drops . Good Luck!

I fixed the problem by taking it to a repair shop

you just say horizontal lines / and across a top of your television.I expect your trouble is the vertical line of your television . sound ok? try trouble the vertical section the check the resistor?

This is for the original problem.. Not the second post.

It's a problem in the horizontal deflection circuit. The parts will be available, but you will be in for some daignostic repairs also to find out why it failing or if it has failed on it's own.
There should be a few caps near the IC (an LA7840) that could also be causing the problem. Click the link, it will make it easier to locate the part inside.

This is the kind of repair best left to a TV tech, but get it done now and it won't cost anywhere near as much as it will later.