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Author Topic: ipod charger no 5V output  (Read 656 times)

Offline turotoknis

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ipod charger no 5V output
« on: June 05, 2012, 01:17:23 PM »
ano kea pyesa sira nito, pagbukas ko kc yung wire ng b+ dumikit na sa LED. Inalis ko Led sa board dna nailaw. Tinest ko iabng pyesa ok nman, maliban sa transformer, dku alam pano sukatin ...sa transformer pa lng wla na output na voltahe eh,. Tia  ???
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ipod charger no 5V output
« on: June 05, 2012, 01:17:23 PM »

Offline mcleod

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Re: ipod charger no 5V output
« Reply #1 on: June 05, 2012, 02:25:35 PM »
Check mo resistance between primary and secondary, it should be infinite. kaunti lang parts niyan. check fuse. baliktaran ayaw umilaw using diode or resistance test(x1)? check mo pa yung ibang diodes, resistors and transistors(mosfet). check mo din capacitors and inductors / coil.

be aware nga pala sa charger mo baka 120 v lang yan.



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Re: ipod charger no 5V output
« Reply #1 on: June 05, 2012, 02:25:35 PM »

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #2 on: June 05, 2012, 03:17:49 PM »
thanks sis,

yung primary yun ba yung apat ang paa
 tapos secondary ang dalawa lng?


tama ba tong ginagawa ko ???
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Re: ipod charger no 5V output
« Reply #2 on: June 05, 2012, 03:17:49 PM »

Offline mcleod

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Re: ipod charger no 5V output
« Reply #3 on: June 05, 2012, 04:11:12 PM »
ok yung first drawing pero inconclusive yan maganda kung may ringer tester ka, yung pang fbt magagamit diyan. anyway visually walang bulge or burn ang transformer mo? mas malamang sa charger ang sira diodes, resistors, cold solder, transistors, open inductor. putok fuse ba? ok ba pagkakahinang(solder ng mga components) yung wires papunta output ok? saka mo na muna pagsuspetsahan yung transformer mo pag na-check mo na walang sira ang other components mo.
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Re: ipod charger no 5V output
« Reply #3 on: June 05, 2012, 04:11:12 PM »

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #4 on: June 05, 2012, 05:00:39 PM »
kinupeyr ko sa ayos na transformer sa nokia charger, pareho nga po ng deflections nila. may mga parang sunog before sa paa ng resistor at isang zener d. pero yung mismong resistor at z. diode ok nman.
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Re: ipod charger no 5V output
« Reply #4 on: June 05, 2012, 05:00:39 PM »

Offline mcleod

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Re: ipod charger no 5V output
« Reply #5 on: June 05, 2012, 06:05:30 PM »
tatagal itong thread na ito kung mag -oobsessed ka sa transfo mo. check other components, please.
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Offline turotoknis

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Re: ipod charger no 5V output
« Reply #6 on: June 05, 2012, 06:21:09 PM »

ok kea nga sbi ko pareho deflection niya sa ayos na transformer ng nokia charger eh...
 papalitan ko nlang siguro dalawang transistor
13003A at c945
wla rin kc voltahe sa isang ecap na 4.7/50V supply sa dalwang yan
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Offline BhongTech

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Re: ipod charger no 5V output
« Reply #7 on: June 05, 2012, 07:29:59 PM »
kung made in china ang charger kunti lang ang part's nito kaya madali lang makuha kung anu ang sira.kung apat ang pin ng Chopper trafo sa input(primary)merun itong feedback at malamang diode at merun din zener diode yan kaya check mo lang ang mga yang kung shorted na at kung shorted ang mga yan pati reg nito ay sibak na rin.check mo na rin ang mga resistor for possible defective.check mo na rin ang diode sa secondary output.

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #8 on: June 05, 2012, 07:57:37 PM »
yup china made..

+1 sainyo sis
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Offline BhongTech

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Re: ipod charger no 5V output
« Reply #9 on: June 05, 2012, 08:08:12 PM »
thanks sis.
malamang signal diode ang ginamit na rectifier nito sa secondary at sa feedback,yung main primary winding naka connect yan sa reg(13003)pagni test mo ang primary winding thru resistance(x1) nasa 1ohms or mahigit pa at yung feddback winding at secondary output nasa almost zero ohms naman.pwede ka pa rin mag replace ng same part's na diode at ang zener ay 5volts,yung i replace mo lang na part ay yung 2sc945 kasi mababa ang Vceo nito.

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #10 on: June 05, 2012, 08:14:17 PM »
kinupeyr ko sa ayos na transformer sa nokia charger, pareho nga po ng deflections nila. may mga parang sunog before sa paa ng resistor at isang zener d. pero yung mismong resistor at z. diode ok nman.

aist npagkamalian kong z. diode
signal diode ata yun, sorry  ;D ;D 1N4148 ba yun ??? check ko ulit bukas

oo nga yung resistors na mejo may my sunog papunta sa maliit na xsistor na c945


may nkita akong C945 sa board ng p.s.u ng PC mas malaki yung size at iba yung second line
pwede po ba yun ang ipalit ???
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Offline BhongTech

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Re: ipod charger no 5V output
« Reply #11 on: June 05, 2012, 08:25:10 PM »
yes 1n4148 yan.
dahil konti lang ito pwede mong iangat ang bawat isang pin ng mga part tulad ng resistor,signal diode,zener diode.madalas pag pumutok na ang reg direct replace na rin ako ng zener diode,signal diode at minsan may resistor din kasamang palit dahil wala ng resistance.ingat ka sa reg minsan reverse ang Emitter at Base nito.check mo rin ang start-up resistor usually high resistance ito.


Quote
may nkita akong C945 sa board ng p.s.u ng PC mas malaki yung size at iba yung second line
pwede po ba yun ang ipalit Huh
di ko get's anung second line?kung parehas ang part no# pwede yan.

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #12 on: June 05, 2012, 08:42:24 PM »
so pwede po pala basta parehas ng no. sa taas na C945

yung 2nd line kc P331
yung sa PSU eh P132A

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Offline BhongTech

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Re: ipod charger no 5V output
« Reply #13 on: June 05, 2012, 08:49:42 PM »
^ yes pwede yan.

Offline ???

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Re: ipod charger no 5V output
« Reply #14 on: June 05, 2012, 08:55:01 PM »
wah ba pictures?
*http://www.elab.ph/forum/index.php?topic=33717.msg632945#msg632945
*http://www.elab.ph/forum/index.php?topic=37150.0

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #15 on: June 06, 2012, 09:53:00 AM »
may deflection sa reverse ng X10K yung 1N5819 schottky diode
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Offline mcleod

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Re: ipod charger no 5V output
« Reply #16 on: June 06, 2012, 10:01:17 AM »
may deflection sa reverse ng X10K yung 1N5819 schottky diode


zero ohms ba pareho? pag oo palitan na pag hindi good pa yan. sis yung ibang tanong di mo kelangan maghintay sa forum andyan si brother Google plus datasheet.

eto ako na nag google para sa iyo:

http://www.electronic-repair-guide.com/testing_schottky_diode.html
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Offline turotoknis

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Re: ipod charger no 5V output
« Reply #17 on: June 06, 2012, 10:07:05 AM »
hindi sis mas mataas deflection ng forward

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Offline BhongTech

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Re: ipod charger no 5V output
« Reply #18 on: June 06, 2012, 10:08:30 AM »
may deflection sa reverse ng X10K yung 1N5819 schottky diode

yes merun din itong deflection pero very high resistance.pero kung parehas zero ohms ang na read mo malamang sibak na yan,tulad ng sinabi ni sir Mcleod.

Offline turotoknis

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Re: ipod charger no 5V output
« Reply #19 on: June 06, 2012, 10:12:18 AM »
ah normal lang pla yun +1

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Re: ipod charger no 5V output
« Reply #19 on: June 06, 2012, 10:12:18 AM »

 

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