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tv speed slim stv-2124usf chassis cy8895c ver1.6 doubt in voltage of +

Televisor Daewoo CY8895C

Televisor Daewoo CY8895C

javercab
hace 5 años
hace 5 años
greetings to the friends of the forum, I get this tv brand speed stv-2124usf with chassis cy8895c ver1.6, which came with the distorted image on the right side, and the voltage at + b of 114v, came from another workshop, so to change the regulator that had 5q0765rt for a cq0765rt and increase the + ba 120v with the potentiometer, the image takes the entire screen but it sounds like a squeak in the yoke that shows that the coil pins resolved and They changed the horizontal and vertical cables, my doubt is in the voltage of + b, I could not find the exact diagram just similar, I would appreciate if you would provide me with the voltage of + b in this chassis, thank you very much
oscar hm
oscar hm
4.437
hace 5 años
hace 5 años
hello according to diagram CY8895C ..el + b is 130v, there I leave an image to compare with your chassis .if it is not your comment what value are the r that occupy the positions marked in green in this diagram and the value of adjustment potentiometer .. greetings I hope you serve
javercab
hace 5 años

if friend Oscar that part is the same, although the vertical of this chassis is the la78141, now I leave it on for testing with the + b in 123v and I burn the regulator, I think for the reduced + b, to reach 130v I have to turn at maximum the potentiometer, this will be normal.

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oscar hm
oscar hm
4.437
hace 5 años

hello tell me what value have the r that I enclosed in green to determine the + b of your chassis ... the filter of + b may also be damaged ..

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javercab
hace 5 años

r 561 100k, r 554 2k4, I put a regulator cq1265 the + ba 120 v and I burn instantly, it will be the yoke, the horizontal measures 4 ohm and the vertical 6.4 ohm, and change the electrolytic of the horizontal and vertical, those of the source, thanks for your help on this fault, greetings friend

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oscar hm
oscar hm
4.437
hace 5 años

Friend seeing that it is an ultra slim would be the measures within normal. And the + b would be fine with that value of the shipping. Your + b in that particular chassis is 120v. This if the adjustment potentiometer is 20k. And it was in the middle

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javercab
hace 5 años

thanks Oscar, the maximum potentiometer gives me 120 v, going down halfway gives 113 v, I suspect the yoke that measures me 4 ohm horizontal and 6.4 ohm vertical, although if it was wrong I would also melt the horizontal, something is happening to me, I'm going to keep checking, greetings

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