We have thin white horizontal lines across the top of our 27'' Toshiba TV. They extend down about 3-4''. You can see through them but it is very distracting. Is there a solution for this? They run across the entire width of the TV screen.

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

Check for dry electrolitic capacitors near the vertical Ic output maybe one of 50v to 100mf or 50v to 10mf

go to the vertical section n change caps like 100uf, 2.2uf around the section in addtion check some caps in the line o/put like 22uf 250v

If they are vertical lines, then the LCD panel is going bad, it will get worst with more lines appear as time goes on.

Check for open capacitors in vertical output circuit I believe 47 uf.

bad vertical chip ic

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?

1.Are these lines only in the upper 1/3 rd portion of the screen?And is there a clear demarcation between this area and the lower portionb, where the image is perfect? 2.Or is thin Horizontal lines evenly spaced around an centimetre apart? If it is the first case, then there si a problem with your TVs SMPS. It is not generating the required regulated 110V required for the TVs functioning. If it is case 2, then there is a simple adjustment at the back - 'SCREEN'. This adjusts the Screen Grid Voltage, and by slightly lowering it, this problem will go away.

I really dont understand the problem Could we see a picture of this please?