Philips 20PT2882/71R (No Power)

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Philips 20PT2882/71R (No Power)

Post by Electro on Tue Dec 14, 2010 7:13 pm

mga master patulong po ulit, meron po siyang B+ 100V. pag-press ng channel button iilaw lang saglit ang puwet ng tube. tapos power down na agad. nagbiblink lang ang led. sinukatan ko ang B+ niya simula sa standby at hanggang sa pagpower ng power down na hindi naman nagbabago.

sanay matulungan niyo ko.

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Re: Philips 20PT2882/71R (No Power)

Post by Oscar on Wed Dec 15, 2010 9:21 pm


sira siguro ang flybak niyan jeff. nakasubok nako ng ganyan.
pwede sad vertical ic

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Re: Philips 20PT2882/71R (No Power)

Post by Hertz on Thu Dec 16, 2010 8:35 pm


pwede din defective system ic

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Fri Dec 17, 2010 9:39 pm


salamat po sa mga nagrereply

@kosang oscar nasubukan ko na din magpalit ng flybak na kadalasan kong ginagawa pag ganito ang trouble pero wa epek.

@master hertz papano ko po malalaman kong sira po itong system ic ?

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Re: Philips 20PT2882/71R (No Power)

Post by ultrasonic™ on Sat Dec 18, 2010 7:46 pm

@electro sori dugay ko nakabalik

always lng jud timan-e sa in-ani nga mga chassis
SOP jud ni xa always sa philips

check first the dual filter caps.. 2pcs. 47uf/160V mgkatabi yan, labi na kng naa ky nabasa nga tamang B+ sa emng tester

pag yan pumalya by cause of leaking or open caps.
di tutuloy ang oscillation mu..
sakit yan ng philips lalo na sa mga ganitong modelo...
wag diskitahan agad ito through sa physical appearance nya..
gamitin ang ohmmeter...

check also kng wala ka bang reverse DC resistance sa secondary out mu... pag yan meron protect din ang set mu..

wag ismulin ang defective vert. ic TDA9302H can cause of power protection..
common sakit yan ng Philips...
check agad the vert. dual supply bago magpalit ha
kong presence palit agad ng vert. drive...

aware lagi kng meron bang X-protect ang unit..
condemn nyu muna....o di kaya suyurin nyu na ang C board... mostly my change value resist..
laruin ang Focus Pot at screen.. dahil pagyan hindi pantay power down ka pa rin. maglagay ng marka kong hindi kabisado... bago mag-adjust

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Thu Dec 23, 2010 9:58 pm

salamat sa advice master ultrasonic™ subukan ko po ulit i check
update na lang ko sunod

OT: salamat po master ultrasonic™
nalipay mi pag-ayo nga nakabalik naka.

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Mon Dec 27, 2010 8:33 pm

mga master nasubukan ko na pong macheck iyong mga payo niyo. pansin ko po na bumabagsak pala ng kunti ang B+ niya at nagpapatay sindi ang LED. napalitan ko na ng bago ang dalawang malalaking capacitor 47/160, ngunit bagsak pa rin

ano nga po pala ang X-protect ?
sensiya na po hindi ko po alam kong saan yan ?

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Re: Philips 20PT2882/71R (No Power)

Post by Hertz on Wed Dec 29, 2010 1:41 am

X-Protect baka X-ray Protection yan

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Thu Dec 30, 2010 7:39 pm


para saan yan master ?

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Re: Philips 20PT2882/71R (No Power)

Post by PIEZO on Thu Jan 13, 2011 9:30 pm

x-ray protect is one of the televisions protection circuit to sense the excess voltage or current to stop and shutdown the hor osc from continuous oscillation to prevent from excessive emission of high voltage on the CRT.it is being located on ps section or some where that monitor the excess voltage or current supply by the regulator

History of X-ray Protect






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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Fri Jan 21, 2011 6:58 pm

@master PIEZO salamat. check ko ulit sa parteng yan

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Re: Philips 20PT2882/71R (No Power)

Post by ultrasonic™ on Sat Jan 22, 2011 9:50 pm



di pa pala ito tapoz ?

@Electro sori mali akng naipost ko.. tama sila X-ray protect yan...\

@all sori tao lng Razz

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Tue Jan 25, 2011 7:58 pm


ok lang iyon master. tapos na pala ito. vertical ic pala ang sira hindi umubra iyong nabili ko. fake nakakainis. butit may extra ako galing sa sanyo tv

sa lahat ng nagbigay ng ideya. salamat mga master sa uulitin

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Tue Jan 25, 2011 7:59 pm



tag-iisang puntos pala sa inyo mga master Laughing

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Re: Philips 20PT2882/71R (No Power)

Post by pyroelectro on Wed Jan 26, 2011 8:10 pm


@electro congrats share mo pa ang iba mong mga repair dito

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Re: Philips 20PT2882/71R (No Power)

Post by Electro on Tue Mar 01, 2011 7:47 pm


opo master gagawin ko talaga yan.

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Re: Philips 20PT2882/71R (No Power)

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