polytron / deadset

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polytron / deadset

Post by fire on Sun Oct 30, 2011 11:18 am

mga kuya pa help po..ung polytron tv ko po kc wlang power ok nmn po ung fuse,cord,filter cap,and FET. anu2 pa po ba ang i test? Pls help!!! :idea:

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Re: polytron / deadset

Post by Hertz on Thu Nov 03, 2011 7:23 pm


ano-ano pa ang mga nagawa mong hakbang ? ano ang modelo nitong unit mo ?

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Re: polytron / deadset

Post by Electro on Fri Nov 04, 2011 12:36 pm


may b+ ka ba master fire ?

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Re: polytron / deadset

Post by fire on Sun Nov 06, 2011 9:35 am

eto po master Hertz
polytron
type:21sf2003d
sn:MA00122/3
master Electro anu po b ung B+ hehehe paturo n rin po.


mga master nag horizontal white line kc eto tpos nabalik nmn tpos mga 1 week lumipas d na nag power.sa regulator po kaya sira nito?hehe pa help po.TY

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Re: polytron / deadset

Post by Electro on Mon Nov 07, 2011 3:33 pm


ang b+ master fire ay ang supply na masususkat mo sa pangalawang capacitor. bali iyan po ang mataas na output ng power supply

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Re: polytron / deadset

Post by fire on Tue Nov 08, 2011 12:47 pm

paano po i test to B+ master Electro?kelangan po ba nasa ground 1 neg na test lead?tpos po ac test ko po?TY Very Happy

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Re: polytron / deadset

Post by ultrasonic™ on Tue Nov 08, 2011 7:03 pm

dapat na nakaset sa DC ang voltmeter mu.. 250V para mas klaro...
sukatin mu ang secondary filter malapit sa chopper transformer/SMPS transformer. kong meron ba xang B+.. kadalasan 90V-125V ang masusukat mu jan. pero defende sa modelo... meron din nmn iba na umaabot up to 145V

disregard that one muna.. bali iyong black probe lagay mu sa chassis ground. makikita mu agad yan dahil wlang ibang parang alambre jan sa picture tube Smile



ung red probe naman ay sa + terminal ng secondary filter (kadalasan value nyan ay 47/uf/160V, 100/160V, 220uf/160V & etc...


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Re: polytron / deadset

Post by fire on Tue Nov 08, 2011 9:08 pm

TY po ng marami Master electro and Ultrasonic now i know na .TY po sa new knowledge. Very Happy

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Re: polytron / deadset

Post by ultrasonic™ on Wed Nov 09, 2011 1:13 pm



tanong tanong ka lng sis lol!

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Re: polytron / deadset

Post by fire on Thu Nov 10, 2011 11:37 am

mga master sukat ko po primary cap.307v. ang secondary ko po B+ 220u 160v ay -neg 3.15V.anu po kaya sira nito?help po

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Re: polytron / deadset

Post by ultrasonic™ on Thu Nov 10, 2011 1:34 pm


try mu ngang ilipat sa - terminal ng secondary caps ang reference ground mu.. tapos sukat ulit.. pag same pa rin... ay focus sa power supply.... palitan ang power reg kng may pamalit... then isa isahing echeck ang peripheral parts na nkapaligid

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Re: polytron / deadset

Post by zandertech on Tue Nov 15, 2011 1:08 am

sir kung wala ka pong b+ na nasukat baka sa power supply section na problem mo ,.if ok ung FET muh and other components ,.try to check cold solders minsan kc pag sineservisan natin ung mga tv di sinasadya na may nasasagi tayung mga parts which causes loose solders in time ,.or sometimes naman mga high value resistors na nag fafail lng yan boss ung nag susupply sa driver circuit ng smps ng tv kya wala kng b+ sa mga secondary supplies moh,.,sana makatulong sir,.. apologies

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Re: polytron / deadset

Post by fire on Tue Nov 15, 2011 2:35 pm

ty master zandertech

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Re: polytron / deadset

Post by zandertech on Tue Nov 15, 2011 9:41 pm

welcome sir Very Happy

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Re: polytron / deadset

Post by ultrasonic™ on Fri Nov 18, 2011 10:57 am


anu na ang update nitu ? diba ito ung DMM ang gamit mu.. so confirm na di pala negative yan.. which is wala pala kaung B+ out...

focus muna sa power supply.. apply basic checking

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Re: polytron / deadset

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