Samsung LED TV UA22ES500R Power problem

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Samsung LED TV UA22ES500R Power problem

Post by Lenaren on Wed Jan 11, 2017 4:04 pm

Master help po.. Ang problema po nito minsan nawawala ang standby power nya pag matagal syang naka-standby.. Minsan nmn mamatay sya kusa sabay mawawala yung standby.. na-observe ko rin po pag hinugot mo na yung saksakan matagal po mawala yung ilaw nya.. mga 32 seconds pa bago mamatay..

Pag binuksan ko ung unit minsan bumabalik yung standby power nya... check ko for loose connections walang problema nmn po.. minsan naman po hugot saksak ng plug sa outlet ng ilang beses nagkaka-standby power sya.. nung hindi talaga nag-power nag test po ako ng voltages.. wala po akong nakukuha sa 13V at 5V pin sa secondary.. pero merong voltage sa main ecap nya..

Possible ba na may tama na opto isolator nito? Any inputs please..
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Re: Samsung LED TV UA22ES500R Power problem

Post by alvinquimbo on Wed Jan 11, 2017 5:03 pm

abang mode muna ako sis..baka mapadaan si sir ultra..nacheck mona yung mga diode nya sis..??
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Re: Samsung LED TV UA22ES500R Power problem

Post by ultrasonic™ on Thu Jan 12, 2017 11:41 am

leak ecaps.. pero mas malapit sa hatol si PWM ic ng Main regulator mo.. Direct Replace mo sis..

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Re: Samsung LED TV UA22ES500R Power problem

Post by alvinquimbo on Thu Jan 12, 2017 1:42 pm

Ganun pala yun sir ultra..+1 po sa inyo..may bago nanaman natutunan...
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Re: Samsung LED TV UA22ES500R Power problem

Post by Lenaren on Fri Jan 13, 2017 10:35 am

Thanks sis ultra.. 1+ po sa inyo.. try ko po palitan sa saturday.. kanina nung pinaandar ko walang power sa secondary.. tapos nung binuksan ko yung unit nag-test ako ng voltages wala pa rin output.. tapos nung tinanggal ko ulit ung plug at kabit ulit nagpower naman..  scratch...
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Re: Samsung LED TV UA22ES500R Power problem

Post by ultrasonic™ on Fri Jan 13, 2017 11:13 am

intermittent problem nga iyan due PSU failure.. wag din e wala sa suspect sina opto isolator at TL431a para sigurado..

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Re: Samsung LED TV UA22ES500R Power problem

Post by Lenaren on Fri Jan 13, 2017 12:49 pm

Thanks sis sa input.. try ko muna palitan yung opto isolator at TL431 kasi may available ako nyan.. test ko lang sis kung anong mangyari..  
....investigate
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Re: Samsung LED TV UA22ES500R Power problem

Post by Lenaren on Tue Jan 17, 2017 12:25 pm

Update lang po mga master.. na try kung palitan yung opto kasi yun lang available ko.. gumana nmn.. nag-on nmn po.. kaso nawawala yung ilaw (standby led) pag matagal naka stand by..  Ibig sabihin may problema pa rin.. si PWM na malamang salarin nito..
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Re: Samsung LED TV UA22ES500R Power problem

Post by ultrasonic™ on Wed Jan 18, 2017 5:26 pm

mukhang pwm na iyan sis lalot kung buo si error amp tl431a

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Re: Samsung LED TV UA22ES500R Power problem

Post by Lenaren on Fri Jan 20, 2017 8:32 am

Update lang po.. OK n po ung unit.. PWM po may sayad.. Thanks master ultra..
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Re: Samsung LED TV UA22ES500R Power problem

Post by ultrasonic™ on Mon Jan 23, 2017 12:55 pm

oy welcome at congratz sis..

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Re: Samsung LED TV UA22ES500R Power problem

Post by Electro on Wed Jan 25, 2017 10:38 am

pwm pala pag ganyan. congrats master.
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Re: Samsung LED TV UA22ES500R Power problem

Post by Electro on Wed Jan 25, 2017 10:40 am

master Lenaren ano pala ang number ng pwm para mailista namin sa notebook lol!
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Re: Samsung LED TV UA22ES500R Power problem

Post by Lenaren on Wed Feb 08, 2017 4:06 pm

Sensya na po mga masters... now lang po naka-online...

@ Master Electro eto po number nya sir... 3BR1065JF..
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Re: Samsung LED TV UA22ES500R Power problem

Post by Electro on Tue Feb 14, 2017 11:29 am

Ayos. +1 sayo master
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Re: Samsung LED TV UA22ES500R Power problem

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