pa help po sa vertical/TDA8174A

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pa help po sa vertical/TDA8174A

Post by fire on Tue Nov 08, 2011 11:34 pm

vertical-TDA8174A mga master pano po ma i check ito?and anu po mga symptoms nito pag nasisira.alam ko lng po kc dito pag nag horizontal line na ang tv sira na po itong vert.and pwede rin po ba itong tawaging
power regulator?ty po

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Re: pa help po sa vertical/TDA8174A

Post by ultrasonic™ on Thu Nov 10, 2011 3:04 pm

nku iba ang vertical ic sa regulator ic

di ko na gagawin kumplekado. ang purpose ng vertical ic ay xa ang responsible pra maexpand ang electron beam ng frame/image sa picstube for vertical position... syempre with the help of Vert. def Yoke..

itutulak nya pataas at pababa...



kaya pag yan ang nagluko o totally hindi gumagana ay horizontal line tlga ang maaaninag sa faceplate ng tube gaya nito.



takenote: sa mga bagong modelo pag di gumagana ang ang vert. sect ng maayos ay power shutdown ang resulta. madedetect kasi ng system na wlang vert. sync pulse na binibigay xa

ok on topic na tau...
dahil tda8172a yan Vert mu ay sukatin mu muna ang mga supplies nya kng buo ba lahat bago xa hatulan..

pin2 & pin10 = Vcc supply
pin3 = input
pin1 = output


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Re: pa help po sa vertical/TDA8174A

Post by fire on Thu Nov 10, 2011 4:11 pm

ty po master ultrasonic.pag test ko po b yan nka ground p ri po ba 1 probe?TY

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Re: pa help po sa vertical/TDA8174A

Post by ultrasonic™ on Thu Nov 10, 2011 4:21 pm

of course, always mu yang gawin kasi yang ang reference ground mu lageh..

lalot kng my power ang unit ngunit 1 horizontal line lng sa gitna.. kng wla kang mang masukat na voltage sa vert supply pin nya ay check mu agad kng may binibigay bang supply ang FBT. pwede din try mung e-float ang vertical ic

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Re: pa help po sa vertical/TDA8174A

Post by fire on Thu Nov 10, 2011 4:43 pm

master ultra pano ko po malaman ang pag check ng fbt kng may supply?and ung efloat po ung vert i.c meaning po ba tangalin ko muna?
ty po sori sa sobrang pag tatanong hehe. Very Happy

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Re: pa help po sa vertical/TDA8174A

Post by ultrasonic™ on Thu Nov 10, 2011 5:01 pm


yapz float means tanggalin mismu.. gawin mu lng yan kng duda ka sa vert. ic lalot kng shorted..

malalaman mu nmn agad kng wla supply binibigay ang FBT.. lalot pag sa mismung vert. supply coil ka magsusukat (AC)

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Re: pa help po sa vertical/TDA8174A

Post by fire on Thu Nov 10, 2011 5:17 pm

master ultra hehehe pano po i check ung fbt? confused

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Re: pa help po sa vertical/TDA8174A

Post by ultrasonic™ on Thu Nov 10, 2011 7:10 pm

nkalimutan kng e-aware ka.. may dalawang klase na pinagkukunan ng supply ang vert. section.. ang isa ay FBT kumukuha.. which is pinaka common yan sa lahat.. or considered as standard na rin... at iyong isa ay sa PSU or power supply...

para mas madali mung makuha sundan mu lng ang pin2 at saka pin10 ng vert. ic kng saan papunta.. kng ito ba ay papunta sa flybak o sa PSU ay jan palang alam mu na kasunod... (^_^ dadaan iyan ng rectifier diode at fusible resistor.

e.g: sabihin nlng natin na sa FBT xa kumukuha. kng nasundan mu ang pinasusundan ko sau ay nasa vert. supply pin na kau ng FBT. sa ibang mga tv units may nakaimprinta na agad like V- & V+ o di kaya voltage rating na 12V=16V or 24v=26v.. as indication. meron din wla, kaya mano-mano ang pglocate o di kaya gumamit ng mapa/service manual para mapadali.



pg alam mu na ang vert supply winding ng FBT pwede mu ng sukatin iyan. set mu lng sa 50V AC volmeter ang tester mu. pag meron tawid nmn ng diode at lipat mu nmn sa DC. explore ka lng sis

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Re: pa help po sa vertical/TDA8174A

Post by Electro on Fri Nov 11, 2011 7:24 pm

lupit mo talaga master. matiyaga ka masiyado sa tulad namin. sana wag kang magsawa

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Re: pa help po sa vertical/TDA8174A

Post by fire on Sun Nov 13, 2011 9:06 am

ty po master ultra Very Happy

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Re: pa help po sa vertical/TDA8174A

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