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panu ba mag repair ng smps?

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01110011
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panu ba mag repair ng smps? Empty panu ba mag repair ng smps?

Post by xyrrej Tue Mar 26, 2013 1:31 pm

mga master may idea po ba kayo or technique kung panu magrepair ng mga smps power supply...??? Question
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Post by Hertz Tue Mar 26, 2013 1:50 pm

monitor mo ang supply mo sa main capacitor para malaman mo agad ko nag ooscillate
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Post by Hertz Tue Mar 26, 2013 1:54 pm

pag hindi. check mo ang controller, protection at feedback
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Post by xyrrej Tue Mar 26, 2013 2:06 pm

panu po imonitor ung supply sa main capacitor or anu pong device ung gagamitin pang monitor...?
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Post by ultrasonic™ Wed Mar 27, 2013 3:15 pm

voltmeter pwde na sis... teka ano ba status ng inaayos mo?
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Post by Electro Mon Apr 01, 2013 12:37 pm

saang smps ito master. baka sa mga dvd. marami ng mga murang smps sa davao times. bili na lang
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Post by ultrasonic™ Mon Apr 01, 2013 6:03 pm

hhmmmppfff my point ka nyan jeff khit di mgandang practice ang ganyan... pero dpat din maging praktikal sa diskarte lalo na pgmkakamura
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Post by james Tue Apr 02, 2013 1:39 pm

Parang bumili na rin lang ng bago.
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Post by xyrrej Wed Apr 03, 2013 4:38 pm

wala kzng output ung supply mostly un ung problem...supply xa ng indoor cable amplifier...
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Post by ultrasonic™ Wed Apr 03, 2013 5:01 pm

for me lng sis ha.. pg smps ang tnitira ko... applicable pa rin nmn ang s.o.p ng pgtrtroubleshoot ng psu ng tv. kya un din ang gnagawa ko.. lalo na pg wla kang secondary output

chenicheck ko agad ang primary ecaps before & after na unplug sa walloutlet
pg na eestored.. check ko agad lhat ng peripheral parts ng regulator. lalo na ang hv mylar cap at mga resistor specially ang mga high value. madalas my nag oopen...

Cnusunod ko nmn ang feedbak coil ng smps bka open na..
then ang bias ckt nmn.. ung malapit sa opto tl431 (^_^

pg yan ay ok lahat.. jan naku mgpapalit ng Regulator (pwm)
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Post by xyrrej Wed Apr 03, 2013 5:11 pm

ah ok sis...tnx sa info...dami ko na kzng ganyan dito..power supply lahat ung probs..check ko bukas,,,sa pwm wla yatang available kz dito sa amin...
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Post by ultrasonic™ Wed Apr 03, 2013 5:33 pm

last hatol mo na yang PWM ic..
xa nga pla wag ismulin din ang current limiter ng opto. minsan change value yan.. at kng my trimmer ang smps board wag din iwla sa suspect.. pg knalawan o ngluko. mgcacause yan ng low output o di kya mkakapanginig sa output
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Post by xyrrej Wed Apr 03, 2013 5:42 pm

ah ok noted sis..focus ko muna sa primary side nito kz wala xang secondary output.. apologies
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Post by Hertz Thu Apr 04, 2013 12:15 pm

sana makakatulong sa ts

panu ba mag repair ng smps? Powersupplyboard

previewsmpsebook

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Post by james Thu Apr 04, 2013 2:20 pm

Ano ba trabaho ng tl431?
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Post by Hertz Sat Apr 06, 2013 11:14 am

gamit bilang shunt voltage regulator, Precision current limiter, Precision constant current sink at Isolated feedback loop sa mga SMPS
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Post by james Sat Apr 06, 2013 2:40 pm

Pwede sir sample circuit using tl431.
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Post by 01110011 Sat Apr 06, 2013 7:39 pm

PWM?
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Post by arkin Sat Apr 06, 2013 10:44 pm

james wrote:Pwede sir sample circuit using tl431.
most common na dyan ang dvd player.99.9% andyan yan Very Happy
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Post by Hertz Mon Apr 08, 2013 11:01 am

01110011 wrote:PWM?

pulse with modulation

arkin wrote:
james wrote:Pwede sir sample circuit using tl431.
most common na dyan ang dvd player.99.9% andyan yan Very Happy

agree. meron din sa mga at/atx power supply
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Post by Deantyne Wed May 01, 2013 3:38 pm

james wrote:Ano ba trabaho ng tl431?

voltage reference ito:

basa dito for the reference:

http://www.ti.com/lit/ds/symlink/tl431.pdf
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Post by kaholito Fri May 24, 2013 3:44 pm

ask ko lang po ung smps transformer pano malalaman kung sira sya?ksi sa tester good ang palo nya.pero pag po9wer on mo di sya gumagana. wlang sec lumalabas.nakaexperince po ksi ako na ganun.palit transformer galing sa ibang borad.
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Post by ultrasonic™ Sat May 25, 2013 2:18 pm

^ try mong gamitan ng Ringer sis..
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Post by james Sun Jun 09, 2013 2:20 pm

Subok mo na ba ito sir? Subukan ko kasing gawin at ng masubukan rin. Baka kasi mafrustrate lang ako kung di ko alam gamitin o hindi naman talaga effective.
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Post by ultrasonic™ Mon Jun 10, 2013 5:34 pm

uu... subok ko na.. my thread nga ata tau nyan dito.. dito lng ako sure kng dito ba un o sa elab
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