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TVs

TV turns on and looks a bit dark !!

Televisor Toshiba SEMP

Televisor Toshiba SEMP

carlos carrascocircuito
hace 5 años
hace 5 años
hello my friends god sell me where they are! I have a problem with my 21-inch television brand (semp toshiba) that due to a few dips of current began to look a little black, it turns on and does everything perfectly, the screen is not clear as it should be !! is a little dark, .. someone to take me to the fault thank you please ..
Victor E
Victor E
65.783
hace 5 años

Don't have the tv model?

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carlos carrascocircuito
hace 5 años

MOD: TV20E91LAV U16. N SERIES: AA002398 SEMP when I turn it off it says "TOSHIBA" the TV darkened a little, and it doesn't look clear how it looked in its original form, the darkness is constant when it turns on and when it is hot or on for a while it is equally constant .. !! that fault was produced due to the electrical dips or deficiencies that are constantly occurring in my city .. I hope your prompt help teacher. Thank you...

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Victor E
Victor E
65.783
hace 5 años

Did you measure the voltage of + b 113volts, check the filters if they are ok?

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carlos carrascocircuito
hace 5 años

Of course, the electrical network is stable in the range of 110, 120 so there are no problems but I have already visually checked the filters and they are healthy, I also think they are the filters but I already checked the biggest ones 385v 220mf --- 160v 220mf - --160v 33mf the others are small or what do you say I change them to discard ??? Or is there a specific filter that usually produces that fault? I apologize for my ignorance about this branch (tv) but what I stand out most is in the electronics of the audio car and everything is empirically ... I hope your prompt help teacher.

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Victor E
Victor E
65.783
hace 5 años

Try raising the brightness with the screen potentiometer on the flyback, to see if it improves.

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carlos carrascocircuito
hace 5 años

well teacher now I write to see how it goes ..

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carlos carrascocircuito
hace 5 años

Hello teacher! good evening! I already did the test by raising the brightness on the flyback (screen) and it improved for a few seconds and it got darker than it was but it worsened more haha .. what other step would you take to repair that damage .. it really seemed like it was a filter but as I said the filters are healthy in sight they are fine, what would you recommend .. ??? I hope and continue helping me to solve that fault !! I hope your prompt response thanks ..

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Victor E
Victor E
65.783
hace 5 años

Try changing the ceramic screen or G2 filter in the socket of the tube.

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carlos carrascocircuito
hace 5 años

Prof is probably the fault because I have seen several tutorials that change only that filter or ceramic capacitor, teacher I tell you have a yellow ceramic capacitor 102 LSK which would be the replacement of that capacitor? I saw that they placed the same blue one but I don't know the value of it! because I also saw that they extracted it and voila! Can it be possible to extract it and not place anything? or should we replace ??? What would be the replacement of 102 LSK yellow ceramic capacitor?

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Victor E
Victor E
65.783
hace 5 años

102 or .001 or 1nf x 2kv

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carlos carrascocircuito
hace 5 años

yes teacher that was the fault the ceramic capacitor! repaired thank you for your help (teacher)

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Victor E
Victor E
65.783
hace 5 años
hace 5 años
give a better response and closure. greetings
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