Philips Model: 20PT15821/71R No Power

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Philips Model: 20PT15821/71R No Power

Post by TOTSKEY on Sun Oct 30, 2011 6:09 pm

mga master pa help naman ..wlang b+, kapag test ko gumagalaw galaw ng kunti pointer ng tester..check ko transistor regulator open ung isang leg.. ung 160v 47uf lumubo piro ok pa nman sya.. ung h-out transistor shorted na..hnd ko pa kinabit ung parts bka sumira ng ibang parts...san makabili ng oreginal ng mga parts ,?tnx..

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Re: Philips Model: 20PT15821/71R No Power

Post by nelok28 on Mon Oct 31, 2011 12:17 am

Check Yuor Main Supply...tol then Focus ka dun Nect Secondary Chopper kung may B+ na Palitanm o na yung Capacitor mo For Sure ayun lng..wag mo muna kabit OUtput mo

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Re: Philips Model: 20PT15821/71R No Power

Post by TOTSKEY on Tue Nov 01, 2011 9:24 pm

tnx tol...

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Re: Philips Model: 20PT15821/71R No Power

Post by Hertz on Thu Nov 03, 2011 5:54 pm

tama si nelok wag munang ikabit ang horizontal output baka mataas pa ang supply mo.

paalala baka hindi mo pa alam ts mosfet ang regulator nito kaya normal na open ang isang junction "6N60Fi"


kong gumagalaw ang supply mo ay palitan ang dalawang capacitor na 47/160 yata iyon. isali mo din sa pagpapalit ang swicthing ic ng Regulator "44603. mura lang naman ang mga iyan. check mo din ang mga zener at signal diode sa paligid nito. pagkatapos subukan mo ng ikabit ang horizontal output at paandarin ang tv

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Re: Philips Model: 20PT15821/71R No Power

Post by Electro on Fri Nov 04, 2011 12:05 pm


philips pala ito. ingat master totsey sa pagsasolder. tama sina master nelok at master hertz iyong driver 44603 baka sira. palitan mo din ang dalawang capacitor 47UF. lagi iyan. nasisira open lagi.

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Re: Philips Model: 20PT15821/71R No Power

Post by daltanics on Sat Nov 05, 2011 1:20 am

siguraduhin ang voltage rating kung nasa 95v bago ikabit h out.

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Re: Philips Model: 20PT15821/71R No Power

Post by ultrasonic™ on Tue Nov 08, 2011 2:27 pm


@TS sundin lng ang mga payo ng mga kamember natin dito. palitan mu na yang dual caps na 47uf/160v mgkatabi iyan... then sukatin ulit ang b+ kng naging normal na ba bago ikabit ang HOT

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Re: Philips Model: 20PT15821/71R No Power

Post by TOTSKEY on Sun Dec 04, 2011 10:08 am

tnx mga master..pinalitan ko ung regulator hung out ko muna ung h out at pbt .sukat ko ung b+ 110 v ,pinalitan ko na rin ung h out transistor ,kinabit ko ung h out at pbt pag on ko shorted ulit ung h out transistor at sira ung regulator..,mga master ilan ba ang tamang sukat ng b+ nito...at bkit si no shorted nya ung h out transistor..

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Re: Philips Model: 20PT15821/71R No Power

Post by daltanics on Sun Dec 04, 2011 7:19 pm

ANO ANG REGULATOR DRIVE NYAN?KUNG TEA1507 YAN 115 TO 120V ANG B+ KUNG MC YAN NASA 95VB+.KUNG TEA1507 YAN PITURAN MO YONG BOARD,PARA MAKITA KO KUNG PAREHAS YAN SA NADAANAN KO.

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Re: Philips Model: 20PT15821/71R No Power

Post by ultrasonic™ on Thu Dec 08, 2011 10:33 am

^ agreed..., @TS anu nga pala ang PWM gamit nyan.. as in power management ic...? kng MC44603 dpat around Vrms 95-99V ka lng dpat. kng TEA1507 nmn ay tama si daltanics. nglalaro yan sa 110-120V. meron pang high end model ang philips na umaabot pa ng 135. kaya dapat aware. yan na ang gumagamit ng rgb unbalance protector. kng uc3842 ay same lng ng mga mc44603.

duda kaming mataas ang B+ mu..

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Re: Philips Model: 20PT15821/71R No Power

Post by Electro on Fri Dec 09, 2011 9:49 am


mga master ano pala ang H-out nito ? baka walang dumper sa loob

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Re: Philips Model: 20PT15821/71R No Power

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