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TVs

cyberlux tv model TVFSCX-21JP

yelitzaosuna

hace 6 años

Goodnight. I need your help with a cyberlux model TVFSCX-21JP which, when it does not have the normal blue signal cable, once I put the signal cable it turns black and it is heard but the image is not visible. You see the channel number, the volume bar and the menu but the image does not. I sent him to record the memory, change the tuner, the video condenser and the color transistors and it remains the same, I move the flyback screen and it looks white with delay lines. I would very much appreciate the help you can give me

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Sergio santos menbreno

1.242

hace 6 años

friend as an audio and video test see if you have image with a dvd

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yelitzaosuna

hace 6 años

I did the test and the image is not visible either. It seems strange but I am a woman

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Sergio santos menbreno

1.242

hace 6 años

replace the 569 and 568 22mfd250vdc 47mfd160vdc filter and the abl pin is 9 flaybck and in the resistor R463 a and 8.5vdc abl

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nicomena2015

9.501

hace 6 años

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hace 6 años

hello colleague: first try the video option q, the colleague Sergio Santos suggests ... if that is well measured q, tension you have on pin48 ABL .. (before connecting the antenna and after connecting the antenna) ... I should not lose 3v on pin48 ... you measure the same on pin8 (ehto) you should have more than 2.5v ... check the R463 of 6,8kohm ... it is connected to the 8v line and the other end to the line of the ABL pin9 of the fli-bak and through the R223 of 820kohm it goes to pin8 EHTO ... (measure on pin9 of the fli-bak ABL q, voltage is there before connecting antenna and after connecting antenna) .. ... also measures when the screen darkens if the 110v of the + b are maintained in the C567 of 220mfx160v ... and the 180v in C569 of 22mfx250v..ok ... greetings !!

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yelitzaosuna

hace 6 años

Thank you. If you connect a DVD and you still don't see anything

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nicomena2015

9.501

hace 6 años

Well ... then make the measurements q, indicate ... x what q, remarks when the screen appears, delay lines appear ... that indicates that q, the hor stage continues to work, ... I leave you an image of the tensions source ... measure if they are present ... measure all the tensions q, I indicated in the previous commentary ...
https://ibb.co/jtB3gz

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nicomena2015

9.501

hace 6 años

good colleague yelitzaosuna ... we have not realized that, you are a woman ... on my part doubly "congratulations" since there are few women who are dedicated to electronics ... but if you have passion for electronics ... "Go ahead" ... it is a very noble prophecy and the most rewarding prize is to receive a (thank you colleague) or a valuation of the contribution given ... there is always something to learn ... and we are always here to help you, my colleague friend. .. luck .... greetings !!

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