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Time to time I get only a horizontal line on picture tube of my 26" Sanyo TV

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Take it apart, there will be a chip like la7835 (then number might be different) it will be an upright chip. 7-15 pins. solder it. if you cant find the chip take it apart and turn it on and tap on all the heatsinks and the line should appear when you tap the vertical chip. then resolder it, and if you want it to last longer replace the 100@25-50v capacitor next to it

Posted on Nov 10, 2008

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You have a thin horizontal line in the center of the TV. You, in this case have vertical IC that has bad grounds. Resolder the vertical IC pins and check the capacitors in the immediate area and replace these caps as necessary. If you still have a horizontal line, you will have to replace the vertical IC. Find a TV tech or someone with electronic experience to do this for you. Should be reasonable to fix. Thanks for asking and Good Luck!

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If you feel adventurous and are careful you might try GENTLY tapping the neck of the tube and see if picture improves/goes out. If the tapping does change the picture it is definitely the tube

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1 Answer

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Had the same problem with mine. The vertical hold chip broke loose from the solder,Resoldered it works fine. You will need a magnifying glass to see this on the bottom of the board.

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1 Answer

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If the horizontal lines going through the picture are fine white lines, then I would suspect the picture tube as having a heater to cathode short or some other problem. Since some sets have had a 3 year warranty on the picture tube, you may be lucky unless the labor to replace the tube is more than the set is worth. Sanyo is usually not a good name in consumer electronics anymore, so if you're looking for a replacement I would look elsewhere.

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No, you have either a bad solder connection on or near your vertical output IC, or a defective IC itself. Don't leave the set on for long with the line across the screen or your pic tube will be toast.

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1 Answer

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Susie, you either have a shorted green drive transistor or more likely a shorted cathode inside your picture tube, transistor repair is a cheap fix, picture tube means set is not worth cost of repair, hope this helps

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