I have about 20 white horizontal lines across my tv set. what could be the problem? checked all connections and everything is fine. can you help diagnose the problem and see if its worth fixing. thanks!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
It sounds as though you can see Transmission lines which are sent out with any broadcast at the top of an image, The TV should normally blank these out, i suggest checking your horizontal and vertical settings
This denotes a problem with the vertical deflection circuit. This is more then likely the result of the vertical coupling capacitor failing. You will need the schematic diagram of the TV to find the capacitor in question. it is located between the vertical output stage and the vertical deflection winding of the yoke transformer. In addition check the continuity of the vertical winding of the yoke transformer this can cause the same problem. In any event the problem is that the vertical deflection signal is not getting to the yoke transformer or the yoke transformer is malfunctioning.
This is usually caused by some of the electrolytic capacitors in the vertical deflection amplifier and in the blanking circuit areas. Sometimes it can be some of the other types of components going slightly off specs.
To test the capacitors, an ESR meter or the equivelent is required.
I would suggest sending the TV out to have an experienced TV service tech do this type of work for you. These types of problems can get very involved. There are also some serious safety issues when working on a TV set.