verticle collapse

Robotron Jon

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Is verticle collapse usually fixed by a cap kit? I have a 25 inch monitor with a thin line running across the middle of the screen from right to left.

Thanks.
 
many things, cold solder joints in the vertical section, bad vertical transistors, bad vertical adjustment pot, and the list goes on.

Start by reflowing the solder on the vertical transistors.
 
Thanks for the reply. What do the verticle transistors look like?

This is a Sharp Image monitor. I happen to have a med res sharp image monitor that's working. Could I swap the verticle transistors if reflowing the solder doesn't help?
 
I put a pic of the chassis on my control panel here on KLOV. Sorry, I don't know how to post pics in threads...It's a Sharp Image.

I went ahead and reflowed the solder on every pin on the board. Took a while. Plugged it back in and the same problem exists but I can hear a sizzling sound when I turn the vertical adjustment pot. Does this mean a blown transistor somewhere?
 
I have actually cured some vertical problems by changing a cap. On some Sanyos it is a tiny tantalum cap that shorts to ground and causes that issue. I have also rebuilt several Sharp Images with vertical collapse by doing a cap kit on them and that fixed the issue. Granted, it wasn't a complete collapse but definitely squished to about 1/4th the screen. I would certainly start on the chassis with a cap kit and see where that takes you.
 
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