Unikon dvd

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Unikon dvd

Post by geof79 on Thu Oct 06, 2016 9:35 am

Pa help nman mga master. Putok ang ic sa power supply, d ko familiar ang parts #. Ang nba2sa nlng ai SDC. Sna my mka 2l0ng. Tnx..

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Re: Unikon dvd

Post by ultrasonic™ on Thu Oct 06, 2016 9:55 am

Hmmppf ang problema kasi ngayon sa mga chekwang board ay sinasadya nilang tinatago ang real part # ng power management or Regulator ic... like ng mga viper kahit anong palit at sigurado kang walang shorted ay sumasabog pa rin... iyon palang viper22a na naka attach sa board ay hndi totoong viper22a kasi hindi angkop ang pin arrangement niya sa board.. kaya mag based ka na lang sa mga datasheet.. cross reference to be sure... kung same package DIP8 ang IC na yan.. try mo ang mga SW2604

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Re: Unikon dvd

Post by geof79 on Thu Oct 06, 2016 10:13 am

Nka gawa nrin nga ako nun sumasabog ang viper22a. Kht npalitan na un ibang cra pumupu2k prin ang ic.

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Re: Unikon dvd

Post by geof79 on Thu Oct 06, 2016 10:19 am

Nkpgtan0ng nrin ako ng power supply board, kung d2 250 un viper22a e un buo na 280. Kunti lng nga ang tnaas ng price. Pero transistor lng regulator na gamit.

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Re: Unikon dvd

Post by geof79 on Thu Oct 06, 2016 10:22 am

Un nga ang problema sir ultra, kht sure ng ok na taz pg palit ng viper e sa2bog lng.

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Re: Unikon dvd

Post by ultrasonic™ on Fri Oct 07, 2016 10:47 am

based ka dun sa datasheets niya.. malalaman mo agad na hindi totoong viper22a ang reg pag iba ang connection pin... halimbawa itong SW2604 ang pin7-8 lang drain pin (B+ in), pin3 ang gnd at pin5 ang feedback



while yung viper22a ay 6-8 ang drain pin, pin 1-2 ang GND, pin 3 naman ang feedback



Siya nga pala ilang pins ba yang sayo...? madalang na lang ako makapag repair ng chekwang dvd palyer eh  ^_^

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Re: Unikon dvd

Post by geof79 on Fri Oct 07, 2016 8:04 pm

Hawig ang linya ne2 sir ultra jan sa diagram ng sw2604.

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Re: Unikon dvd

Post by ultrasonic™ on Sat Oct 08, 2016 10:12 am

Good kung ganun.. aralin mo na lang mabuti

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Re: Unikon dvd

Post by geof79 on Sat Oct 08, 2016 10:52 am

Ok, sir ultra. tnx..

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Re: Unikon dvd

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