Question about Sanyo DS31590 31" TV

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Thin horizontal line across screen, no picture , audio still works

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  • 647 Answers

This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

Posted on Oct 04, 2009

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bobjrdns
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SOURCE: 27" sharp has audio/no picture/ horizontal white line across screen?

bad vertical chip ic

Posted on Oct 19, 2008

SOURCE: screen is black with a thin horizontal line

Change the vertical IC and check the electrolitic capacitors near them

Posted on Aug 28, 2009

johnnydiode
  • 647 Answers

SOURCE: only thin white line across my toshiba tv

This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

Posted on Sep 28, 2009

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