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Projection TV Yoke And Convergence Question

 
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SOPHM



Joined: 10 Nov 2009
Posts: 29

PostPosted: Tue Nov 17, 2009 11:17 pm    Post subject: Projection TV Yoke And Convergence Question Reply with quote

Does the tabs on the yokes have anything to do with changing the size of the picture? Cause I have a projection tv that the convergence knobs got knock out of alignment and the green tube use to be perfectly scanned before this happened, but now I cant get the green picture tube to fill the screen and I now have a black boarder around the screen. I turned the knob that does the horizontal and it doesnt fill the screen and there aint no vertical Knob on the board.

Anyone know of why I cant get the green tube to fill the screen now? I only messed with the knobs on the convergence board and the tabs on the yoke, and as far as I know the blue and red can still scan out more.
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Drdave



Joined: 11 Jun 2009
Posts: 24
Location: South Florida

PostPosted: Wed Nov 18, 2009 2:37 pm    Post subject: Yoke Reply with quote

In most cases the tabs will only center the image on the tube.

If you can slide the yoke in or out on the neck of the tube this will change the size. If you can't compensate that way then you have to check the circuits related to the yoke .Also you could have a defective yoke. To check that, swap the yoke connector with one of the colors,and see if the green gets full scan.If not it is most likely the yoke.

Good luck
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Thu Nov 19, 2009 12:37 am    Post subject: Reply with quote

Got a model number?
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jts1957



Joined: 24 Nov 2008
Posts: 2472
Location: Far, Far Away

PostPosted: Thu Nov 19, 2009 1:02 am    Post subject: Reply with quote

No Brand either. Razz
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SOPHM



Joined: 10 Nov 2009
Posts: 29

PostPosted: Thu Nov 19, 2009 1:36 am    Post subject: Reply with quote

I know I didn't put the model and brand cause everytime i do no one replys cause its to old so I was hoping just to get some idea's of why this would happen.

But here it is, Magnavox 46 inch projective TV Model# RJ8530AK03
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Thu Nov 19, 2009 11:21 pm    Post subject: Reply with quote

Sounds like your convergence IC's crapped out.
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SOPHM



Joined: 10 Nov 2009
Posts: 29

PostPosted: Fri Nov 20, 2009 12:33 am    Post subject: Reply with quote

I'm pretty sure this TV doesn't have IC's, it's all done manually on the convergence board and I haven"t seen any IC chips any were.
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