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WHAT PROBLEM WITH DOUBLE LINE BLACK ON FRONT ,I DONT KNOW WHAT PROBLEM

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Hi.

If you have black bands at top and bottom or on the side of display, assuming that we are talking about a CRT or rear projection TV, then you have a convergence problem.

The most common fault causing the problem are the convergence ICs.

The repair is done replacing the two integrated circuits whose function is amplifying and stabilizing power to maintain the alignment circuit. Usually more components in alignment circuit must be tested and eventually replaced.

The repair job starts at about $120 up to about $250. The part is generally not expensive (two ICs or transistors and a couple of other components if needed).

Regards.

Ginko.

Posted on Nov 09, 2010

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Posted on Jan 02, 2017

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sd tech



f751396.jpg typical convergence chips




c204ae8.jpg

protect resistors for the chips, note the two that are burned or black in the middle--all are low value and a bad one will either be burnt of read like a bad fuse.



2978ee2.jpg

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