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Re: rca f25432 have half screen.
If you are experiencing the vertical issues, I would check the tuner for poorly solder aroound the ground shield if the tuner is the one integrated on the main board.
Check this sity for the schematic diagram as well: //http://www.eserviceinfo.com/download.php?fileid=31473
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You have vertical output problems.There is distortion at the top because of a faulty vert. output i.c. or a faulty electrolytic capacitor.It's possible there may be a problem at your yoke also.It needs a professional repair.
picture blury problem is due to
1 focus wire loose or disconnected due to long life of connection.this wire is in crt base.
2 focus control mistunned.
3 low voltage on crt electodes.
4 if tv is old then crt is getting weak.
5 crt base or connector loose
hope this helps.
If you ONLY have an Antenna or Cable input, you are going to need a Video & Audio to RF converter.. This connects to ya DVD Video & Sound OUT, and then connects to ya sets Antenna IN.
This device converts ya Video & Audio signal to Radio Frequency Signal that can be "Received" by ya set. (Basically a low power TV transmitter)
This is the only way I know of, if ya haven't got any other Inputs into a set.
the horizontal output transistor my be shorted out, or the flyback transformer my be open? Have you unsoldered and tested? If you are not a technician, or have no experience I would not suggest to work on the tv yourself.
You have a vert sweep problem and unless you know how to trouble shoot this cuircit bring it to a pro. I found out mostly in these sets that the vert output IC is bad.. Also sometimes the b+ filter cap off the fly is leaky and made the IC to fail. Another thing is Im surprised to hear you got a pic with the vert failure and a bright line in the pic!! This could be a big problem when the sets fixed so dont run it too long like this. It could burn a line all the way across the screen and you will see a dark faint line in your pic because of this. BE CAREFULL!!