Tv works fine,except the vertical hold is not working,screen will fluctuate in size fairly consistently,and sometimes it will work fine.anybody know what this is?and also if i dont repair myself,does anyone have an idea of what a repair like this would cost?
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No,tv have cold solders inside the tv like vertical IC or around the area.Have a soldering iron,a roll of solders,also know how to do basic soldering?Yes.Take the tv aparts,take a back plastic of the screw driver tabs all around the main pcb,will see the vertical changes,take out the a/c power sourced,resolders those area,will fix this problems.
This is usually a bad elect capasitor or a bad solder connection on the vertical IC, The capasitors will be close to the vert chip..Sometimes you can clear problem with a light tap on the TV, if so then suspect bad solder.
Your tv has a failure in the vertical circuit. Most likley since you explained that it was coming in and out you could fix it by Resoldering the connections on the vertical output IC. Replacing the vertical output IC would be your next step after this.
replaced this capacitors in vertical circuit.100 uf/50v,1uf/50v,1000 uf/25v,2.2uf/50v,47 uf/50v.this might not as exact as what is on ur tv.but, just replace those capacitors and see the result.
hope this help u....