lcd tv dead set problem cause of lightning..

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lcd tv dead set problem cause of lightning..

Post by ytsertoto on Fri Jan 20, 2012 2:06 am

mga mam/sir pls help me regarding the trouble of my LCD TV I'll already sent to service center of xenon but they want to replaced the whole module of power supply section which cost of 5000 pesos.mam /sir i need your suggestion for troubleshooting regarding this trouble.tnx newly intern lang po ako sa forum na to.tnx again and more power...

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Re: lcd tv dead set problem cause of lightning..

Post by ultrasonic™ on Fri Jan 20, 2012 11:06 am


anu ang model number nyan ?
bka mkahagilap tau ng service manual...

technician ba kau ?

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Re: lcd tv dead set problem cause of lightning..

Post by zandertech on Fri Jan 20, 2012 11:24 am

Sir anu pong m0del ng Lcd tv nio?, malamang po sa primary circuit ng SMpS yan,.bka sa regulator,kadalasan nag shoshort ung power transisor or IC nya pag may lighting,..base 0n my observati0n sa paggagawa ko,.or s0metimes sa fuse lng xia,...if marun0ng ka sir gumamit ng multitester, try m0 to,..first if u kn0w how to dis assemble the unit, then do so,..pero kung d mu alam at first time muh,then i rec0mend n0t to,...baka po lumala ung sira,..hanap ka nlng po ng mas may xperience mag troublesh0ot,....ok,..if u had opened the unit already, then dis assemble the power supply,..set your multi tester to,25ovDC,..Locate the capacitor with 4oov/1oouf or above value un ung pinaka malaking capacitor sa primary section,and check if it had voltage charged in it,..if meron discharge mu muna, ako i use 5oo oHm/5W resistor,paralleled across the pins of said capacitor wait until discharged,then double check kung wala n talaga,.tapos set ur tester to x1 check first the fuse,..if broken then put ur black test pin to positive of the said capacitor,the red one to the negative pin of it, ..u wil n0tice the white stripe on the body of capacitor,.aun ung negative,.wag mu muna tanggalin ung mga test prod mu sa pin check mu kung sagad ung reading nia, if sagad it means may shortage,.if nag deflect sya then bumalik sa infinity lagay mu sa x10k pag sa infinity parin,.try to replace ung fuse,..pag may short naman solder out mu ung power transistor or ic then check the pins of caps again if nawala ung shortage ang problem is ung power ic or transistor,...

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Re: lcd tv dead set problem cause of lightning..

Post by zandertech on Fri Jan 20, 2012 11:59 am

nga pala sir kadalasan sira nasisira din ung fusable resistor nya accross the positive line of primary circuit,it is c0nnected to the positive pin of regulator,.,and one m0re thing sir minsan kc nasisira din ang driver circuit ng regulator,.lalo na pag transistor ang regulator nia,kung may sira ang driver circuit nia n0 use kahit palitan mu ng regulator yun,.its either hindi rin gumana or worst eh masira lng ulet ung bago mung pyesa,..so i suggest that u seek assistance to m0re experienced person in that field,to help u,..thanx sir,..h0pe magawa mu n yang LCD muh,..

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Re: lcd tv dead set problem cause of lightning..

Post by ytsertoto on Fri Jan 20, 2012 5:37 pm

mam /sir ito po yung model ng LCD tv ko ZENON model no.LX19A2H bale bguhan lang din ako kumuha lang ako 3 months course regarding repair and troubleshooting TV VCD and DVD kaso not enough knowledge for me.kasi every sunday lang ang training..nung nabuksan ko kasi tong site na to sabi ko ayos to kasi tulungan at bi gayan ng idea regarding troubleshooting kaya ngregister agd ako,as of now kasi sa semiconductor job ko.
salamat ZENDERTECh sa suggestion and recommendation mo also to you ULTRASONIC sundin ko lahat advice nyo tnx and regards.

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Re: lcd tv dead set problem cause of lightning..

Post by zandertech on Fri Jan 20, 2012 7:04 pm

Sir san kb banda? Bulacan kb?

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Re: lcd tv dead set problem cause of lightning..

Post by ultrasonic™ on Fri Jan 20, 2012 7:10 pm

nku wla akng mahanap sa net ng SVC manual...
kya instinct at tyaga ang kailangan natin dito pra maayos yan...

ito ang una kng tanong. sa tingin mu saan galing ang kidlat ?
anu anu na ang mga nagawa mung mga test ?

if u can post an a image ng mga board mu... lalo na ang SMPS module ay post mu dito.. para ma pin point natin saan ang mga possible problem... both upper at bottom view ng board..


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Re: lcd tv dead set problem cause of lightning..

Post by fire on Fri Jan 20, 2012 7:15 pm

go master ultra and zandertech bounce

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Re: lcd tv dead set problem cause of lightning..

Post by ultrasonic™ on Fri Jan 20, 2012 7:24 pm



^ gaga.. tulungan mu kami...
di kaya ng powers namin (^_^

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Re: lcd tv dead set problem cause of lightning..

Post by zandertech on Fri Jan 20, 2012 8:08 pm

Hahaha, katawa c master ultra,...

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Re: lcd tv dead set problem cause of lightning..

Post by ytsertoto on Sat Jan 21, 2012 6:52 am

dito ko sa laguna..... feedback n lang po ko sa inyo kung ano result mam/sir.tnx sa semiconductor ako napasok...

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Re: lcd tv dead set problem cause of lightning..

Post by zandertech on Sat Jan 21, 2012 6:24 pm

hala sir panu po b burahin yang mga multiple post ko,pasenya na,.cellphone lng kc gamit ko,..nadouble send yata,..sorry master ultra,...pakibura nlng po,..thanx

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Re: lcd tv dead set problem cause of lightning..

Post by ultrasonic™ on Mon Jan 23, 2012 1:31 pm

ok.. aku na ang mgbubura nyang dumi mu (^_^

ytsertoto wrote:dito ko sa laguna..... feedback n lang po ko sa inyo kung ano result mam/sir.tnx sa semiconductor ako napasok...


oie congratz. e treasured mu yang job mu...
congratz & welcome pla dito

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Re: lcd tv dead set problem cause of lightning..

Post by zandertech on Tue Jan 24, 2012 9:11 pm

Ei,.thnx master ultra,.hehe,.....ganda nga job ni sir,.sana makapaxok din ako sa electr0nic c0mpany,.may alam po b kau mga boss na pwede mapag ojthan?,nid ko p kc ng m0re expiriences,.?,

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Re: lcd tv dead set problem cause of lightning..

Post by ytsertoto on Wed Jan 25, 2012 5:20 pm

if meron dito sa company ko feedback ako sayo as of now kasi wala p mahina ang gawa ngun....

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Re: lcd tv dead set problem cause of lightning..

Post by Electro on Wed Feb 22, 2012 4:40 pm


sana hindi nasira ang pwm ic

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Re: lcd tv dead set problem cause of lightning..

Post by ultrasonic™ on Thu Feb 23, 2012 6:50 pm



^ agreed pwde ngang tinamaan yan

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Re: lcd tv dead set problem cause of lightning..

Post by arkin on Fri Feb 24, 2012 9:03 am

chek muna kong my suply yong primary.kng mron,at wla ang secondary,mlamang PWM IC yan.pro chk mo rin kong my PWM,depende ri kc sa design yan.tip:kg hindi nag-discharge yog ecaps,mlamanag hindi gumagana ang PWM.kng ngdischarge,check secondary diode.

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Re: lcd tv dead set problem cause of lightning..

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