LG-CP_21T20A hor.transistor overheats

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LG-CP_21T20A hor.transistor overheats

Post by kaholito on Fri Oct 19, 2012 10:09 pm

pinalitan ko po ng bagong flyback ok na sana kaso sobra mag init ang HOT.nagpalit na rin ako ng mylar 680j/1600v ata value nun.nainit pa din.posible kaya ung flyback ang problema?bad quality?ok nman mga value ng resistor.

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Re: LG-CP_21T20A hor.transistor overheats

Post by ultrasonic™ on Tue Oct 23, 2012 4:51 pm

6006H pa ba ang FBT number?
much better replace it into 6002u. mdaming japake ngkalat na 6006 sa merkado.. btw anung HOT nilagay mu?

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Tue Oct 23, 2012 9:52 pm

d1555 po nilagay ko hindi nman nagshort ksi kinargahan ko ng malaking heatsink pero mainit talaga sya limot ko na master ung fb# nilagay ko sila ksi ang bumili pinakabit lng sa akin.d2627 ung dating HOT kso dali masira(shorted nagcrack sa init sguro) lalo na ng sinubukukan kong mag auto search ng catv turbo mode.may isa pa master problema ito pag hinugot ko ung plug tapos kabit ko uli at i on pagbukas ng tv nka video sya lagi tapos nsa 50 ang sound level 100max.magrechanel uli ako .pero pag pinatay ko nman at standby lng hindi nman sya nbalik sa video wag lang mahugot ang plug.

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Tue Oct 23, 2012 9:59 pm

1.Col 2.180v 3.b+ 4.Gnd 5.12v 6.26v 7.Nc 8.Abl 9.Heater 10.ala pong nkasulat kung pra saan pero may coneksyon po sya.ito po ang flyback ng LG tv na ito.ano po kya original fb#.bka nga hindi match ung pikakabit sa akin kya naoverheat.

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Re: LG-CP_21T20A hor.transistor overheats

Post by arkin on Wed Oct 24, 2012 1:13 pm

nkaincounter na rin ako gnitong problema,LG din..154-277p ang fbt.nangangati na ulo ko kaiisip bkit sobrang init at nasusunog pa H out.sorang lakas pa ng heater.abot ng 16v Twisted Evil try mo plitan ng iba,pro don ka bumili sa iba..

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Wed Oct 24, 2012 3:58 pm

mahirap malaman kung maganda quality ng flyback.pwede kaya ipalit ung flyback na sinasabi ni master Ultra?6002u.hindi po ako marunong magsukat ng heater voltage.ano po ba normal nun? Crying or Very sad

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Re: LG-CP_21T20A hor.transistor overheats

Post by ultrasonic™ on Thu Oct 25, 2012 12:39 pm

^ hanapin lng ang heater pin sa C board.. "HT" for theoretical 6.3V ac, for actual nglalaro yan sa vrms 4.8v-6.8V

kaholito wrote:d1555 po nilagay ko hindi nman nagshort ksi kinargahan ko ng malaking heatsink pero mainit talaga sya limot ko na master ung fb# nilagay ko sila ksi ang bumili pinakabit lng sa akin.d2627 ung dating HOT kso dali masira(shorted nagcrack sa init sguro) lalo na ng sinubukukan kong mag auto search ng catv turbo mode.may isa pa master problema ito pag hinugot ko ung plug tapos kabit ko uli at i on pagbukas ng tv nka video sya lagi tapos nsa 50 ang sound level 100max.magrechanel uli ako .pero pag pinatay ko nman at standby lng hindi nman sya nbalik sa video wag lang mahugot ang plug.

di ng eestored ng data ang eeprom mo... maybe my problema ang eeprom ic or peripheral parts nito.. try to direct sub ng mga small ecap sa bandang UOC lalot sa parteng system.. try also to resolder ang LV reg. mu lalot ang 9V at 5V.. btw regarding sa HOT. di yan normal na super mdaling uminit khit sa orig na HOT except kng my problema ang FBT, Yoke at inductor coils sa Hor. sect.. paki double check mu nlng ts.... lalot mga HV caps.

uu nga pala, sc-023a chassis ba ito...? kng Oo.. ang orig na FBT nito ay 6174v-6006H or BSC26-N2121... kya recommend kng png replace sau ang 6174v-6002u

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Thu Oct 25, 2012 1:58 pm

sc-023a chassis nga po ito.meron po ba kyo diagram nito master?subukan ko palitan ng fbt nung recomended nyo wag lng sna ako makakuha ng peke.mahal din ksi ito.ung pong sa eeprom mkuha kaya sa reset un?problema wla po ako mga tools pamalit ng memory.

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Re: LG-CP_21T20A hor.transistor overheats

Post by ultrasonic™ on Thu Oct 25, 2012 3:56 pm

^ sbukan mu nlng e reset.. wla nmng mwawala kng susubukan (^_^

btw regarding sa svc manual, meron na tau nyan dito...
pasok ka dito -> LG SC-023A

regarding sa eeprom dump meron din tau. nyan kaya dont wori
TV dumps

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Thu Oct 25, 2012 7:47 pm

salamat po master.ung tv dump hindi ko po alam gamitin un.ano po ba kailangan para mailagay un sa tv? pale

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Re: LG-CP_21T20A hor.transistor overheats

Post by ultrasonic™ on Fri Oct 26, 2012 6:33 pm

gamit lng kau ng Programmer.. meron tau dito na serial programmer
ito ang _> link

much better bumuo kau ng sarili nyu.. kasi it so very useful for us a technician.. lalot mostly sa tv ngyon ay matrix system na ang design

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Re: LG-CP_21T20A hor.transistor overheats

Post by Hertz on Sat Oct 27, 2012 1:44 pm

malaki ang package size ng d1555 sa d2627. malaki din ang agwat nila. mas mataas ang d1555 sa d2627 kaya malabo iyan uminit ng sobra

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Sat Oct 27, 2012 4:23 pm

opo nga master hertz.tingin ko nga po peke ung flyback.ganda nmn po ng pic kya hindi nman sguro sa def coil.ang prob.

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Sat Oct 27, 2012 4:25 pm

panu nga po pla magreset ng memory?hang lang po ba ang vcc?tapos power on?

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Re: LG-CP_21T20A hor.transistor overheats

Post by ultrasonic™ on Sat Oct 27, 2012 4:43 pm

^ hinang/float mu ang pin8 ng 24C04 bago e-on ang unit...
pg katapos mae-on, e connect ulit.. or pwde ipgsabay ung pin1-4 ang ihinang...

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Re: LG-CP_21T20A hor.transistor overheats

Post by kaholito on Thu Nov 15, 2012 11:25 pm

update ko lng po kyo.nagapalit po ako ng bagong flyback 6002u ang kinabit ko.ok na sya normal na ung init ng hot.mukhang peke ung unang nabiling 6002u na fb.ang prob n lng ung memory try ko i float ung pin 8 pero ganun pa din.ano po ba service menu nito?bka pede makuha dun.

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Re: LG-CP_21T20A hor.transistor overheats

Post by ultrasonic™ on Mon Nov 19, 2012 1:10 pm

oie congratz

to enter svc mode
press menu on tv & press menu on remocon
kng wlang orig na remocon pwde na ang universal remocon

gudlak (^_^

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Re: LG-CP_21T20A hor.transistor overheats

Post by Electro on Wed Nov 21, 2012 1:43 pm


congrats master kaholito

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Re: LG-CP_21T20A hor.transistor overheats

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