help voltage test

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help voltage test

Post by fire on Mon Nov 07, 2011 2:08 pm

mga master pa help nmn po kng pano step by step mag voltage test ng tv.TY Smile

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Re: help voltage test

Post by Electro on Mon Nov 07, 2011 3:46 pm


magsimula sa 220v line master. dapat set sa ac ang tester. isunod naman ang unang capacitor dapat DC naman at sa pangalawang capacitor

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Re: help voltage test

Post by fire on Mon Nov 07, 2011 5:01 pm

naguluhan yata ako master Electro.dba po kelangan may 1 nka ground para ma test ung Capacitor?

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Re: help voltage test

Post by fire on Tue Nov 08, 2011 1:10 pm

master electro ang malaki ba na filter Cap un ang 1st?d k po alam kng anu po ung 2nd cap na i test ko un po ba ung sumunod sa pinakamalaki sa may power supply?TY

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Re: help voltage test

Post by ultrasonic™ on Tue Nov 08, 2011 7:09 pm


aku na ang sasagot, tama ang pagkakaintindi mu sis

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Re: help voltage test

Post by fire on Tue Nov 08, 2011 8:59 pm

ty master Ultrasonic. Very Happy ask ko n rin po.pag test ko po ba nito kelangan po ba ung black probe ko nasa ground?and ung parang wire na nakadikit sa tube un po ba ground?ty

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Re: help voltage test

Post by ultrasonic™ on Wed Nov 09, 2011 12:40 pm

may tama ka ulit Razz

yan nga ang chassis ground


see the alligator clip sa picture

jan mu ilagay ang black probe ng tester mu. at red probe mu nmn ang ililipat lipat sa mga test point area

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Re: help voltage test

Post by fire on Wed Nov 09, 2011 5:21 pm

master ultrasonic pano pa po ba mai check ung iba by using that method?exp.voltage regulator with 11 pin.pls help TY Very Happy

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Re: help voltage test

Post by ultrasonic™ on Wed Nov 09, 2011 5:37 pm


kng voltage check ka lng.. sa primary caps at secondary caps ka muna magsukat.. dapat may nasusukat ka jan.. mostly sa primary caps dapat meron approximately 320V DC kng sa 220V outlet
pag 110vc naman dapat around vrms 160V siguro Razz limot ko na eh

now kng malilito ka sa ibang modelo meron iba na hiwalay ang ground. sa HOT at saka Cold ground.... kya minsan mababa ang mkukuhang reading sa primary.. mas maganda kng lilipat nlng ang negative probe ng tester(black) sa - terminal ng primary caps... para sakto... lalot kng sa HOT side kau magsusukat..

para di ka mawala: ang HOT side ay ang circuit mula sa ac cord going to primary caps minsan tnatawag din natin yang earth ground

ung sa cold side from output ng smps going out sa filter caps
iyan na ung chassis ground..

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Re: help voltage test

Post by ultrasonic™ on Wed Nov 09, 2011 5:40 pm



tungkol nmn jan sa regulator.,. test mu lng agad ang secodary caps kng may B+ ka ba.... kng wla kang masukat ay pabalik ka sa HOT side... kaya mgfocus sa regulator at mga peripherals nito lalot kng nag e-stored pa ng V ang primary caps.

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Re: help voltage test

Post by fire on Wed Nov 09, 2011 8:31 pm

TY po master ultrasonic sobrang helpful po ito.try ko po lagi to para makabisado ko.tnx po again sa new knowledge.

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Re: help voltage test

Post by fire on Thu Nov 10, 2011 11:20 am

master ultrasonic. sukat ko po primary cap.307v. ang secondary ko po B+ ay -neg 3.15V.anu po kaya sira nito?help po nka power on n po ito deadset po kc.

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Re: help voltage test

Post by ultrasonic™ on Thu Nov 10, 2011 3:50 pm


ito din ung nasa kabilang thread diba ? so di na yan negative pag ang gnd reference nyu ay ang mismung - pin ng secondary caps..
so ang maipapayo ko tulad pa rin sa kabila palitan muna ang secondary caps(direct sub). then hinang ang H-out or B+ pin ng FBT para masdisable mu ang horizonatal sa PSU at mas madali nating matanxa kng may effect ba ang horiz.

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Re: help voltage test

Post by Electro on Fri Nov 11, 2011 7:22 pm

fire wrote:naguluhan yata ako master Electro.dba po kelangan may 1 nka ground para ma test ung Capacitor?

sinagot na pala ni master ultrasonic™. @fire sundan mo lang ang guide ni master

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