Author Topic: samsung lcd power supply (Read 236 times)

macx · « **on:** June 19, 2012, 01:52:47 PM »

ang problem po nito pumipitik lang yong power led nya on/off... nong buksan bloated na yong mga filter ecaps nya sa 5v at 13v supply nong palitan ko na same value then voltage check yong dalwang suply present nman pero not steady ksabay nong sound na parang pumipito pero paputol putol din....ginawa ko po trace ko muna kong san nanggagaling yong sound hang ko muna yong suply ng iverter ganon prin check ko diode sa supply ng 5v at 13v yong parang transistor tinangal ko tapos tester ok nman wlang shorted power on ko na nkahang yong dlawang diode pumutok yong power ic san po kaya naging problema nito mga master sa power ic po kya nangaling sound?.....

shorted po yong ZD111 patulong nman po mga master pano malalaman kong ilang volts ang zener diode pag ganito ang marking 4744AP sa may primary section po ito malapit sa power ic na T0P244FN may nabibili po ba nito power ic...wala din po ako mkita sa google...

1N4148/PH4148 same lang po ba ito....maraming salamat po mga master.....

Philippine Electronics Forum · « **on:** June 19, 2012, 01:52:47 PM »

NORTH LUZON · « **Reply #1 on:** June 19, 2012, 03:52:56 PM »

zener po yan

Philippine Electronics Forum · « **Reply #1 on:** June 19, 2012, 03:52:56 PM »

panyero · « **Reply #2 on:** June 19, 2012, 04:03:38 PM »

for the record wag mag hang ng kahit anong parts sa mga smps unless sigurado sa ginagawa.anong model yan sis.

Philippine Electronics Forum · « **Reply #2 on:** June 19, 2012, 04:03:38 PM »

macx · « **Reply #3 on:** June 19, 2012, 04:13:23 PM »

Quote

for the record wag mag hang ng kahit anong parts sa mga smps unless sigurado sa ginagawa.anong model yan sis.

samsung sync master hind ko mabasa yong nsa likod nya pero sa power board ang nkalagay MODEL NO:FSP025-2PI01

Philippine Electronics Forum · « **Reply #3 on:** June 19, 2012, 04:13:23 PM »

macx · « **Reply #4 on:** June 19, 2012, 04:15:22 PM »

Quote

1N4148/PH4148 same lang po ba ito....maraming salamat po mga master.....

Philippine Electronics Forum · « **Reply #4 on:** June 19, 2012, 04:15:22 PM »

pete · « **Reply #5 on:** June 19, 2012, 04:49:55 PM »

pa sub dito

panyero · « **Reply #6 on:** June 20, 2012, 01:58:24 AM »

monitor b to sis?

macx · « **Reply #7 on:** June 20, 2012, 06:25:31 AM »

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monitor b to sis?

opo master lcd monitor...

macx · « **Reply #8 on:** June 20, 2012, 06:28:32 AM »

T0P244FN ano pong pwede pang replacement d2 mga master.... meron po bang nabibili nito...tnx

TBG · « **Reply #9 on:** June 20, 2012, 07:17:20 AM »

lesson!basta sa power supply never hang any parts then turning it on,gaya noon sa akin pag plug ko Booom!!!!!DARNA!!!!!ayun sabog ang parts. mosfet ba ang regulator nya?

?

4XFOUR · « **Reply #10 on:** June 20, 2012, 09:43:44 AM »

Quote from: tbggomez on June 20, 2012, 07:17:20 AM

lesson!basta sa power supply never hang any parts then turning it on,gaya noon sa akin pag plug ko Booom!!!!!DARNA!!!!!ayun sabog ang parts. mosfet ba ang regulator nya??

sis, pwede paki explain further kung anong scenario ang i-hang any parts on power supply? yun ba yung tanggalin isang paa ng isang component para lang magcheck ang resulta nung pin na nakaangat? thanks.... e-hang or iangat ang pin ang ibig sabihin ninyo?

macx · « **Reply #11 on:** June 20, 2012, 12:17:53 PM »

Quote

mosfet ba ang regulator nya??

hind po 6 pin ang regulator nya....

Philippine Electronics Forum · « **Reply #11 on:** June 20, 2012, 12:17:53 PM »

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