thorshz
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« Reply #20 on: July 14, 2009, 09:03:02 PM » |
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s bakit my 175v sa FBT pi ABL,sira na FBT nyan palita muna mura lang nmn replacement.
sakit talga samsung mahina FBT
sir pinalitan ko na rin flyback,, ganun pa rin, nasusunog pa rin yung resistor.... |
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« Reply #20 on: July 14, 2009, 09:03:02 PM » |
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sEPh
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« Reply #21 on: July 14, 2009, 10:24:38 PM » |
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sir eto yung details..
nag-sstandby sya, pag-pindot ng ON nasusunog R08, then pag-ala R08 nag-hhighvoltage mga 1 second tapos may matinis na tunog then eto yung mga measurement...
FBT pins..
pin 180V =0V
pin 125V =175V
pin ABL = 175V
pin 15V =0v
pin 24v = 0v
HOT
Collector = 150V going 175V pag pindot ng ON
Emitter 0V
Base 0v
KA7631
Pin1 Vin1 12V
Pin2 Vin2 12V
Pin 8 Output1 8V =correct
Pin 9 Output2 5V =correct
Sir baka may pin voltages ka ng SMR40000 ala kasi ako makuha datasheet and schematic.
salamat!
Posted on yung mga pins sa taas na 0v, may continuity ba sa ground? dun mismo sa pin ng flyback ka magchechek.kasi kung wala,di tlaga sya maglalabas ng voltage. yung capacitor ng ABL pkicheck din,baka open kaya nasisira yung resistor. |
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sEPh
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« Reply #22 on: July 14, 2009, 10:30:04 PM » |
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sir napalitan ko na SMR4000 pati HIS, HOT and FBT, nag-on na sya nang tuloy-tuloy nung pinalitan ko Vertical IC nya pero nasusunog pa rin 1k resistor papuntang ABL ng flyback, so kahit ala yung resistor na yun nag-on naman TV. Pero may problema pa kasi walang 24V, 15V and 180V galing ng FBT. 125V lang po meron and yung mga direct sa supply tulad ng 9V 5V and 33V. ano po bang sira nito.... mali yung quotes...hehehe. yung mga pins sa taas na 0v, may continuity ba sa ground? dun mismo sa pin ng flyback ka magchechek.kasi kung wala,di tlaga sya maglalabas ng voltage. yung capacitor ng ABL pkicheck din,baka open kaya nasisira yung resistor. |
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jhamir
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« Reply #23 on: July 15, 2009, 10:47:06 AM » |
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fbt no. 20a001
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jhamir
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« Reply #24 on: July 15, 2009, 10:48:55 AM » |
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kung naninibak ng abl resistor,,,, magpalit ka na fbt... kc posible my lumalabas na hv sa abl pin na kumokontra sa b+ kya naninibak ng resistor.. tnx
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thorshz
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« Reply #25 on: July 15, 2009, 10:29:26 PM » |
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sir, nakuha kona kung bakit palagin pumuputok ang resistor sa ABL.
may resistance pala ang ABL sa katabi nyang 125V. May nag-cause ng path sa pagitan ng dalawang trace ng board. Nung naka-cut ko na yung pagitan nila di na nasusunog ang resistor pero bright na bright ang screen and may mga diagonal white lines.
wala ring sound and picture, kahit sa video mode...
meron OSD na RED color lang
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thorshz
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« Reply #26 on: July 15, 2009, 10:41:03 PM » |
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sir ano kaya problema nito,
bright screen with with diagonal lines,
no picture (channel and video)
may OSD (red lang)
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sEPh
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« Reply #27 on: July 16, 2009, 04:43:58 PM » |
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sir ano kaya problema nito,
bright screen with with diagonal lines,
no picture (channel and video)
may OSD (red lang) baka mataas yung G2,adjust mo yung screen sa flyback. my 180v na ba? baka mababa yung voltage ng RGB, check mo yung capacitor na 250v malapit sa flyback. |
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thorshz
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« Reply #28 on: July 16, 2009, 10:41:21 PM » |
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@seph sir, sagad na sa minimum yung screen sa flyback.meron 180V pero hindi sya umaabot 180V after ng rectifier diode. 180VAC sya sa flyback pero almost 150V DC lang after rectification.
R=2.5VDC
G=4.2VDC
B=4.2VDC
Yung ABL ba negative talaga voltage? na reread ko sa ABL -70VDC
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thorshz
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« Reply #29 on: July 16, 2009, 11:22:39 PM » |
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sir pahabol, ngalaw ko yung yoke pero hindi lumiliit screen, bright white pa rin with diagonal lines then may lines ng blue and red sa gilid parang effect ng mag-netization ang color na kelagang i-degauss. then bigla na-nag trip off, nag-ttrip off na after 2 seconds.
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jhamir
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« Reply #30 on: July 17, 2009, 07:53:30 PM » |
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kung bumaba ang abl down to negative value meaning nung mataas ang liwanag... at kung tumaas puntam positive value sa padilim nman... check mo ung 180v galing fbt papunta sa crt socket supply ng rk gk bk... normal 90vdc to 140vdc...depende sa adjust..
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thorshz
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« Reply #31 on: July 18, 2009, 06:49:27 PM » |
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@jhamir ok yung 180V eto yung readings ng rk,gk and bk. mejo mababa yung bk....
rk =90v
gk =90v
bk = 25v
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sEPh
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« Reply #32 on: July 19, 2009, 09:12:31 AM » |
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Yung ABL ba negative talaga voltage? na reread ko sa ABL -70VDC check resistor from b+ or 180v papuntang ABL... |
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oldskul
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« Reply #33 on: July 19, 2009, 02:20:35 PM » |
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mukhang kulang boltahe mo sa rgb?
masyado mababa yung bk mo.
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technoquest
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« Reply #34 on: July 19, 2009, 04:24:52 PM » |
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sa tingin ko may change value na resistor diyan o d kaya open sa CRT board, check ninyo sir  |
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thorshz
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« Reply #35 on: July 19, 2009, 08:02:05 PM » |
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yun nakuha ko  , leaky ang Transistor C2330 180V to BK. Hanap muna ako transistor. Update ko kayo sirs! salamat sa tulong! |
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thorshz
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« Reply #36 on: July 20, 2009, 08:13:16 PM » |
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mga sir, ganun pa rin,mababa yung BK, pero nung na-try ko i-hang yung RGB na transisitors tatlong C2033 pantay-pantay naman ang boltahe ng RK, BK and GK.
So ibig sabihin merong nag-ppull down sa BK kasi yung BK, GK and RK connected sa collector ng mga transistor.
Hindi po kaya may tama na rin ang KA2161 na IC? Since galing naman sa kanya signal ng RGB?
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johnpats
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« Reply #37 on: July 20, 2009, 11:02:48 PM » |
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Hindi po kaya may tama na rin ang KA2161 na IC? Since galing naman sa kanya signal ng RGB?
sir baka KA2131, muL-ti reG.  |
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\\\"wag mong isipin ang sahod mo, dahil pag nag-e-enjoy ka sa ginagawa mo, darating at darating ang pera sayo..\\\"
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sEPh
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« Reply #38 on: July 20, 2009, 11:13:16 PM » |
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subukan mo muna hung yung RGB don sa PIN ng IC.
tapos try mo kung maliwanag parin,dapat black screen yan...
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thorshz
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« Reply #39 on: July 20, 2009, 11:20:27 PM » |
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so pag hang yung RGB equal ang boltahe ng RK BK and GK since galing lang sila lahat sa 180V? ok try ko, problema ko bumalik yung sira na nagtrp on/off.
pag nakahang ko ang horiz pins ng def yoke nag-tutuloy-tuloy, ok namn ang def yoke.
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November 28, 2009, 12:15:09 PM
