14vS100 shartp crt totally dead set

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14vS100 shartp crt totally dead set

Post by electro+ on Fri May 29, 2015 8:12 pm

cinemaborg shartp crt 14v-s100 totally dead set po wala rin led lights: mga ginawa ko nang tes;t voltage test ko sa main capacitor 300v, sa b+155v, rectifier diode forward and reverse infinite at 8ohms, ung apat na transistor sa power supply collector infinite emiter 300k ohms. yung transistor malapit sa horizontal section collector infinite emiter 210 ohms, walang voltage sa b+ capacitor tabi ng flyback, flyback xformer wala rin po voltage, rectifier diode infinite at 8ohms. salamat po sa makakatulong.

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Sat May 30, 2015 9:08 am

wala rin pong masukat na voltage sa power regulator from pin 1-12 ang gamit kong ground ay yung spring na naka dikit sa picture tube.

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Re: 14vS100 shartp crt totally dead set

Post by dizon on Sat May 30, 2015 9:16 am

check mo master ang dalawang transistor a1013 at 2023 ata yun. kong tama ang pagkaalala ko. kasi para sa power switching yun. sa - ka na lang muna ng secondary capacitor mag ground master. kong sa secondary b+ ang tinetest mo baka may putol ang connection ng spring. kong sa primary naman master dun ka na lang muna sa main capacitor mag ground.

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Re: 14vS100 shartp crt totally dead set

Post by dizon on Sat May 30, 2015 9:19 am

dapat may matest ka ng 300v sa pin 11 at 12 master pagnaka ground ka sa - ng main capacitor

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Re: 14vS100 shartp crt totally dead set

Post by dizon on Sat May 30, 2015 9:21 am

o baka wala ka pang kuryente sa main capacitor check mo master ang 2.2 ohm 10W malaking resistor yan. baka open. maaaring shorted ang stk master

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Sat May 30, 2015 10:00 am

Salamat sir dizon check ko po sa monday. nasa school kasi yung unit. feed back ako monday night. salamat po ulit ng marami.

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Re: 14vS100 shartp crt totally dead set

Post by daltanics on Sun May 31, 2015 2:42 am

ang ic regulator nito ix1791/stk73907 ba?

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Sun May 31, 2015 10:28 am

Hindi ko po napasin master, check ko po bukas master, salamat po sa pagbisita

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Re: 14vS100 shartp crt totally dead set

Post by Hertz on Sun May 31, 2015 10:04 pm

baka sira ang regulator. kong ang resistor na nabanggit ni dizon ay open nga. o maaaring ang power switch ang sira dyan

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Mon Jun 01, 2015 9:16 pm

stock parin rin po yung power reg niya ic1x1791ce, ang sira po yung power switch nya. parehong infinite po kasi reading ng collector at emiter. naka bili na po ako ng switching transistor c2023 kabit ko po bukas pag pasok sa school. pero bago po iyon may reading po yung power reg nya na 470dcv, diode 480acv. yung b+ naman na tabi ng flyback lessthan 5 volts

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Mon Jun 01, 2015 9:21 pm

tapos tuklap na yung contact ng copper sa c754 na transistor emiter ginawa ko jumper nalang sa katabing gamit maikling wire diode c754 din. sana mag work na bukas ito pag kabit ko ng c2023

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Mon Jun 01, 2015 9:25 pm

salamat po sa mga input nyo mga master.

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Re: 14vS100 shartp crt totally dead set

Post by Hertz on Mon Jun 01, 2015 11:00 pm

electro+ wrote:stock parin rin po yung power reg niya ic1x1791ce, ang sira po yung power switch nya. parehong infinite po kasi reading ng collector at emiter. naka bili na po ako ng switching transistor c2023 kabit ko po bukas pag pasok sa school. pero bago po iyon may reading po yung power reg nya na 470dcv, diode 480acv. yung b+ naman na tabi ng flyback lessthan 5 volts

masyadong matataas ang reading mo. Analog ba yang gamit mo? baka mali ka lang ng basa o baka hindi na accurate yang tester mo. unahin mo muna yang ayusin bago ang tv

electro+ wrote:tapos tuklap na yung contact ng copper sa c754 na transistor emiter ginawa ko jumper nalang sa katabing gamit maikling wire diode c754 din. sana mag work na bukas ito pag kabit ko ng c2023

puede yan lang ang may problema kaya wala kang oscillation

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Re: 14vS100 shartp crt totally dead set

Post by daltanics on Mon Jun 01, 2015 11:14 pm

primary power= more than 300volts,secondary power=120volts wag kalimutan e check ang 12volts .basta sharp na ganyang model, basi sa nadaanan ko.

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Re: 14vS100 shartp crt totally dead set

Post by Electro on Thu Jun 04, 2015 1:08 pm

cinemaborg yan master. subok din sa 110

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Re: 14vS100 shartp crt totally dead set

Post by Hertz on Thu Jun 04, 2015 11:06 pm

tama check mo ang 12v. sunod naman ang hvcc always dapat may 9vdvc, if no vcc check d631 9.1v zener baka shorted..if meron vcc or drop possible jungle ang sira. direct replace vertical ic TA8403k. pwedi yong LA7830..check pin3 and 6 if may 24vdc. if wala check r511 1.5 ohms if open.. if wala dyan sa dalawa testpoint. try to float tuner especially scl at sda pin baka short sa gnd .

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Re: 14vS100 shartp crt totally dead set

Post by james on Sun Jun 07, 2015 8:34 pm

Ang gulo ng data.

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Re: 14vS100 shartp crt totally dead set

Post by Electro on Sun Jun 07, 2015 10:16 pm

sundin mo lang ang mga master

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Sat Jun 27, 2015 11:58 am

Fix na po ito mga master. Salamat po sa mga hints at inputs nyo napadali po ang pag repair ko. Sorry po late reply naputulan ng net. Thanks again!

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Re: 14vS100 shartp crt totally dead set

Post by Hertz on Sat Jun 27, 2015 1:13 pm

james wrote:Ang gulo ng data.

pasensya na. hndi ko na review.

@electro+ congrats

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Re: 14vS100 shartp crt totally dead set

Post by electro+ on Sat Jun 27, 2015 5:12 pm

Salamat po master Hertz. Master James pasensya na po kung naging magulo ang info.sa susunod po I will make it more accurate as much as posible. Thanks po Ulit!

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Re: 14vS100 shartp crt totally dead set

Post by james on Sun Jun 28, 2015 10:46 pm

Ano kaya ngaing trouble?

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Re: 14vS100 shartp crt totally dead set

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