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jrsexpress
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« Reply #20 on: August 03, 2010, 02:55:40 PM » |
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yong pwm wala bang connection yong natanggal na pin?
sir bakante hu talaga yan, nung una akala ko may natanggal, pero pagtingin ko sa datasheet bakante tlaga sya sir |
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« Reply #20 on: August 03, 2010, 02:55:40 PM » |
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jrsexpress
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« Reply #21 on: August 03, 2010, 02:59:44 PM » |
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ultrasonic™
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« Reply #22 on: August 03, 2010, 03:38:12 PM » |
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sir bakante hu talaga yan, nung una akala ko may natanggal, pero pagtingin ko sa datasheet bakante tlaga sya sir
yapz normal ang ganyang package...  @joelsuralta next tym nlng aku magpopost i wil try na mahanapan kita ng svc nyan oldest model yata ito rather than sa mga dks-10000 series |
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im always walking on the rain so that no one could see me crying
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jrsexpress
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« Reply #23 on: August 03, 2010, 03:41:29 PM » |
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thanks sir ultra! naka antabay lang po...
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m@r
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« Reply #24 on: August 03, 2010, 07:54:15 PM » |
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ah ok sis... hehehe
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it's not how much what we have but it's how we used what we have...
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jrsexpress
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« Reply #25 on: August 12, 2010, 02:12:32 PM » |
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mga master may service manual na ba kayo sa DVD na ito?
not parin po eto mga master help po...
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jrsexpress
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« Reply #26 on: August 12, 2010, 02:14:05 PM » |
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not solve pa po.. tnx!
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ultrasonic™
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« Reply #27 on: August 12, 2010, 07:04:57 PM » |
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sis ito lang ang natalisod ko SMPS cicuit ng model DK9821N (DK9821CNM) DVD player  nanjan na din ang Troubleshooting guide http://img145.imageshack.us/img145/8881/troubleshootingguide.jpg |
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im always walking on the rain so that no one could see me crying
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jrsexpress
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« Reply #28 on: August 13, 2010, 07:52:57 AM » |
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maraming salamat po sir ultra plus 1 sa yo.... malaking tulong po ito
sir D123 at D121, range x1k ng tester ko ay may kunting leak, posible ba leak etong dalawang diode na to sir?
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ultrasonic™
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« Reply #29 on: August 13, 2010, 07:40:44 PM » |
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maraming salamat po sir ultra plus 1 sa yo.... malaking tulong po ito
sir D123 at D121, range x1k ng tester ko ay may kunting leak, posible ba leak etong dalawang diode na to sir?
possible ngang leak yan sis.. pero sa totoo lang kunti lng ang chance na yan ang salarin kung bakit wlang power ? it is only a rectifier diode... pwede na kayong magshunt nlng jan ng kahit anung rectifier diode to confirm priority nyu focus kau sa mga nakabelog na hugis itlog |
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im always walking on the rain so that no one could see me crying
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ultrasonic™
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« Reply #30 on: August 13, 2010, 08:14:23 PM » |
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sa totoo lng sis sa ganitong modelo (PWM / Power Management ic ) lagi ang salarin (NCP1014) try mu palitan & see the result |
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nucleus
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« Reply #31 on: August 13, 2010, 09:26:42 PM » |
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sa totoo lng sis sa ganitong modelo (PWM / Power Management ic ) lagi ang salarin (NCP1014) try mu palitan & see the result may output DAW sa 3.3V |
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Hi! I'm nucleus and i carry the charge  Hindi ako nandito para makipagkumpitensya kanino man |
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ultrasonic™
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« Reply #32 on: August 14, 2010, 11:17:30 AM » |
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may output DAW sa 3.3V
yapz... i get it @TS try mu lang walang mawawala |
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jrsexpress
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« Reply #33 on: August 16, 2010, 09:47:38 AM » |
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sir update lang po..
ayaw talaga mag trigger ang transistor sa 12v at 5 v, Q123 at Q126...
try ko e short ang collector at emitter ng dalawang Q's... ayun makapg play eject at stop cya, pero hindi
ma access ang power switch... mag power on lang cya pag press ko ng open close switch, power ctl line
cguro ang problema nito galing mpeg board sir?
wla bang ibang ma apektohan sa ginawang kung pag force on ng mga Q's? thanks..
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ultrasonic™
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« Reply #34 on: August 16, 2010, 10:33:54 AM » |
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naku baka matuluyan ang MPEG board mu
defective MPEG board..? yapz napakalaking possibilities na sira yan..
sakit din yan ng ganyang modelo...
kaya for me i highly recommend na palit muna ng PWM ic
pag wlang pinagbago after replacing it, confirm mu na agad na may problema ang MPEG board
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jacks
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« Reply #35 on: August 16, 2010, 10:43:31 AM » |
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Ok here what I can say. Base sa schem na binigay ni sis Ultra. Yung power supply ay dapat meron na standbye power. So kung ok 3.3V, atleast meron na standbye voltage para magtrigger. Yung trigger ay galing sa Mboard PWR_CTL. I think its positive trigger para matrigger nya Q122 to ground para magbias yung Q124, para magkameron ng bias voltage sa base ng Q123. Then lulusot na 12Vdc which in turn giving also conduction para sa 5Vdc, giving bias sa base ng Q126, pacorrect na lang ng term kung mali. So sa standbye, 12Vdc ang 5Vdc ay wala pa. Dapat meron ka makukuha na voltage reading after d125 na almost 14Vdc. Share ko lang, sana tama ako. |
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jacks
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« Reply #36 on: August 16, 2010, 10:45:40 AM » |
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Teka ano ba part number ng IC151?
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jacks
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« Reply #37 on: August 16, 2010, 11:10:17 AM » |
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Ayon kay Just, sa testing ng Schottky meron kunting leak sa x10 sa reverse. At full sa forward test, that's D121, di ko tiningnan datasheet ng D123 kung Schottky rin.
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jrsexpress
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« Reply #38 on: August 16, 2010, 01:24:55 PM » |
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ok thanks sir ultra at JS...
try ko muna na palitan ang PWM ic nito...
magkano kaya etong ic na to sir NCP1014?
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jrsexpress
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« Reply #39 on: August 31, 2010, 02:32:05 PM » |
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update lang po..
nag palit na ako ng NCP1014 no luck ganun parin ang probs.. ayaw mag trigger ang transistor sa 12vdc
at 5vdc.. so ganun binalik ko sa force on sa mga transistors... gagana sya.. except sa power switch...
na sa mpeg board ata ang problema...
sir ultra may diagram ba kayo sa mpeg board nito sir? hingi sa na ako... thanks!
gusto kung suyurin ang mpeg board
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