Beat on the back and it works
Check for excess screen voltage. Adjust the screen control to eliminate these vertical retrace lines. [Thin white line acorss the frull screen at about 1 inch apart.]
SOURCE: Picture goes to one thin horizontal line in middle of screen
There is a bad solder connection in the vertical sweep circuit. if you know how toi solder, go and find the vertical output IC and resolder that first.. but if you have no solid state electronic repair experience, please find a trained tech to assist you in this repair, as if you wait it may end up costing you double of what it would now, so haveit done ASAP. Good Luck Please do not forget to rate this one.
SOURCE: thin horizontal line
Thats almost definately bad solder connection. look at solder joints for cracks around teh lead. better yet, suck outold solder and put in new on any connections that have anything larger than a standard resistor lead. yoke plugs, tuner, etc
SOURCE: Thin Horizontal line through tv blank screen.
Replaced vertical IC ( la78041 ??>.. Or La78040 ). Look for born resistor beside IC. Replaced capacitor 100uf 35V too!!! Good luck !!
SOURCE: Thin Horizontal Line on TV screen
I had the same problem on a 36" Hitachi TV about 7 years old. After reading comments on this and other pages I went and bought a soldering iron not knowing what I was going to do with it.
After trying to find a loose connection with the power off- with no success, I then tried with the power on. Not the smartest move, but I was able to find the problem.
If you follow the colored wires (blue, green, red, yellow) from the back of the tube they will come together at a connector that plugs into a card at the bottom of the set. That connection was no secure. Since reseting that connection I have had the clearest picture since puchasing the TV new.
I am sure it is obvious that I don't have an electronics background, and I don't have an explaination as to why this worked. I just know it did. I hope this helps someone.
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