TV has a thin horizontal line across the screen

need to access the ez menu to reset the parameters u will need a tech to fo this

Nothing you can do about that...get used to it or change the TV.
It's a defect in the panel that can't be reliably fixed.

picture board failure
take it in for a diagnosis and quote before wasting money on home repairs

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

IT SOUNDS LIKE DRY JOINTS ON FRAME CHIP

REPLACE VERICAL OUTPUT IC ' LA7838

you need to replace the electrolytic capacitor in the horizontal section of of your tv sets,cause the capacitor is weak.need to repair

no you have no vertical bad chip ic

This is a problem with the vertical circuit. Look for a small flat IC attached to a heat sink. It should have about 9-11 pins and be marked LA7838 or something similar. Try resoldering the pins first. If that does not resolve the problem, replace the IC. The IC will cost between $10-$20.
Dan

this symptom, sometimes called the tube light effect, it is characterised by a bright thin horizontal line across the middle of the screen. this symptom is caused by a breakdown in the vertical deflection circuit. hence maybe the trouble maybe in the vertical oscillator, amplifier or output circuits. but if all i have said is not clear to you, better bring it to a qualified tv technician. good luck!