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Help tv sharp 29fl94 vertical line

robinson sandrea
hace 5 años
hace 5 años
Hello friends, I have a 29 "Sharp 29fl94 TV with a vertical line, I have tested all the components associated with the horizontal transistor and the yoke connector and they are fine, I have soldered welds, I have 130v on pins 10 and 9 of the flyback the others voltage are not present, I have 130v in the collector of the horizontal transistor 144v in the fat filter there is also 130v in the filters of + b that other input need to solve this problem
Norvy
Norvy
1.300
hace 5 años

Hi, have you checked the polyester capacitors well and measured the HOT?

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eov47
eov47
665
hace 5 años

Hi, it is not well understood. If there is 130v. (+ B) and the other output voltages of the flyback are not present, there is no horizontal oscillation. , there can be no brightness on the TV

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eov47
eov47
665
hace 5 años

If the line is horizontal, the horizontal scan is fine. What is missing is vertical scanning, there you have to look for - power (24v. Or -12v. And + 12v.) - vertical IC - connection yoke vert. - etc. ..

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robinson sandrea
hace 5 años

The vertical friend line in the center of the screen

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nicomena2015
nicomena2015
9.501
hace 5 años

it does not clarify if the line is from the bottom down on the screen ... or it is a line from left to right on the screen ... if it does not silence well that confuses colleagues ... if you have a left line right on the screen is a horizontal line ... not vertical..ok ..

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eov47
eov47
665
hace 5 años

If the line is vertical (from top to bottom) the problem must be sought from the collector of tr. horiz to the yoke, the yoke itself and the return to mace

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robinson sandrea
hace 5 años

Vertical line from top to bottom

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nicomena2015
nicomena2015
9.501
hace 5 años

You have to check the C681 of 0.33mfx250v and see if it is not open or badly welded ... if it has another 0.39mfx250v, it can also be used ... the L672 coil reviews its flooring ... measure continuity of the return track of the yoke q, it goes to the union of the diodes D673 and D605 ... review solders in the collector of Q602 ... with the tv off measure continuity from the collector of Q602 to the coil of the yoke- (red wire) and see if that track is not cut ... ok ...

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robinson sandrea
hace 5 años

Thank you for your comment tomorrow first thing I do what it says Greetings

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robinson sandrea
hace 5 años

Indeed if there was continuity between the collector and the coil

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neg2013
neg2013
14.048
hace 5 años
hace 5 años
Good evening: What you have to review is the components related to the horizontal coupling ...
robinson sandrea
hace 5 años

Of those I just missed the c681 tomorrow I take it out and I inform you Greetings. And thanks for answering

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robinson sandrea
hace 5 años

Excuse me, my friend, I have capacitors of 0.36uf and 0.39uf of the same voltage, so far I don't have that one of 0.33uf X 250 to prove what he told me

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robinson sandrea
hace 5 años

I'm going to look for him to do that test and I say Greetings

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neg2013
neg2013
14.048
hace 5 años

Good morning: In these cases if you do not have a capacimeter, you have to try this, renewing capacitors, but you must always use the same voltage, or higher.

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nicomena2015
nicomena2015
9.501
hace 5 años

colleague Robinson ... as he says he has a vertical line ... look closely xq, a vertical line is upside down in the center of the screen ... a hor line is from left to right in the center of the screen ... if you have a line hor, and you see part of the image on that line is xq, the hor, is working ... not so the vertical ... ok ... this is according to what, says more arriva. ..okay..

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robinson sandrea
hace 5 años

Thank you for your comment friend the line is vertical from top to bottom in the center of the screen

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robinson sandrea
hace 5 años

Thank you all for your comments it was indeed that capacitor cut c681 of 0.33 uf X 250v I placed one of 0.36 X 250v and so far it has been working for about an hour on excellent I give this question closed and 100% satisfied with this community

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