Toshiba 27" Picture is black with exception of one thin vertical line in the middle of screeen. Audio is great. Is this a costly repair?

Check and replace all the electrolytic capacitors at its vertical output section circuit. There will be five or 6 of them. Replace all.

it should cost you from $50 for dry solder joints up to about$120 for a rebuild of the vertical stages.

Hi.

This website has the service manual ($7.79) with instructions to diagnose the boards. Unfortunately I am afraid that the problem is not a board but the panel itself.

Thin vertical lines in the middle of the picture mean that the panel is gone. Here an example of lines from bad panel in Toshiba LCD:Line Picture. (discussion: Avsforum). Sometimes the lines can be dark or in bright color.

The panel costs $339 (LCD PANEL ASSY).

Because of the price of the panel, the TV is not worth repairing unless under warranty.

Even if the TV is out of warranty call Toshiba and report the problem. As you can see in AVSforum page above the problem is affecting many users.

If Toshiba doesn't offer special conditions on repair (or discount on new), the TV is not worth repairing. Replacement of the digital board will hardly be a solution.

Only if you have wide bands, scrambled or flickering, then the problem is digital board (main board) or panel.If you have the thin pixel lines, then the panel is gone.

this symptons is caused by a breakdown in the vertical deflection circuit. hence, the trouble may be in the vertical oscillator, amplifier or output circuit. in most modern tv the vertical ic is usually composed of these said circuit inside. the ic have many pins, standing on a heat sink and smaller in size. try to check also the capacitors surrounding it. sometimes leaky capacitor may cause this problem. good luck!

Your Vertical Amp is probably Blown (bad) , but before you change that check all capacitors around the vertical amp IC and / or resolder resistors and diodes around vertical amplifier.
And NO it is NOT the Picture Tube
Good Luck
JG

The problem is in the vertical section of the main board. Bad capacitors and maybe the vertical IC. If you are not inclined to be a tech you will have to take it to a shop.. I don't know what they may charge but I normally get $69- $89

change the electrolytic capacitors in the vertical section of tv. you do need a qualified tv tech to do this repair for sure

bad vertical chip ic

You need to replace the vertical IC and all the dry capacitors near to him.Good luck

The verticle output iC or the b+ feed is going bad. To fix it your gonna need a multimeter and experience working with tv. Now to its worth??? do you like the set? Does it have all the fetures and fuctions that you liokeand how good is the picture? It shount cost ya more the 125 to 150 for this repair. Good Luck