Re: silverstone sst st50ef with bulged caps
ok thanks for the explanation, now i understand why it was not happening during a restart within windows...
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silverstone sst st50ef with bulged caps
hello guys, i need your advice,
here i have a PC with a weird behavior, occasionally it will start, with a delay,
i push the power button, nothing happen, no light no spin, nothing, then 30 sec later the pc starts without me touching anything.
i think the problem could come from the PSU, i opened it up and found 5 bulged caps, 3 teapo 2200uf 16v, and 2 others i cannot see the specs
do you think there is a link between the bad caps and the delay the pc takes to start...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
ok i see, thanks for the clarifications, at the moment i put that psu aside , i am going to get back at it after the chrismass season.
have fun everybody...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
not sure what you want me to do with the pads, you means the pads the mosfet connects to the pcb?...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
on the board
now i removed them, and i did this test
[url]http://itrepairguide.com/how-to-test-3three-pins-mosfet-with-multimeter/[/url]
when i connect the black probe to the drain and red probe to the source i get a reading of 623 (continuity setting) on both mosfet, but when i try to charge them up, black probe to drain, red to gate for a few seconds, when i move the red probe to the source, i do not get any beeping, and the multimeter give me a value of 127 (both mosfet)
...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
thanks for the input,
i did some more testing and found 2 mosfet 20n60c3(q701 q702) when i set my multimeter to 200 homs, i get 5.5 between the gate (pin 1) and the source (pin 3), it means it is shorted no?
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
here's a picture of the regulator i soldered yesterday
can someone tell me if i fucked up, on the red arrow i notice i made a connection between the diode and the regulator leg,
what does the white line underneath means (no connection?)...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
oups!!
received my TNY278P (IC501) switching regulator this morning, so i installed it,
but as soon as i turned the power on, i heard a bang and saw some sparks inside the psu, the same part (ic501) had blown again, so i have to find what cause this
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
here it is
i think it was the paper roll that was moving inside...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
ok will try to do it this week, any special precaution to take before doing this, i never opened a capacitor, what is the proper procedure?...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
ok some update,
i replace the defective 330uf 400v capacitor (funny when i shake it i can hear moving part inside) by the one i bought (390uf 400v from panasonic) but still no power.
so after some more reading (link given by sgtrock+ one of his post on eevblog) i found out that a TNY278P (IC501) switching regulator could have gone bad, and indeed after close inspection, i realise it has a blown leg,
so i got to change this also.
i also checked the q601\602 mosfet but they are okLast edited by manthi; 11-09-2015, 09:46 PM.
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
ok thanks, went for [url]https://www.digikey.ca/product-detail/en/EET-ED2G391DA/P11663-ND/483261[/url]Re: OCZ 700 Watt Bug Zapper Recap & ...D/483261[/url]Last edited by manthi; 11-03-2015, 10:10 PM.
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
LH
also can someone explain me why it's ok to go with a 390 uf instead of 330, i always read that you should stick with same capacitance when replacing a capacitor...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
ok thanks, going to check that
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
add $8 shipping and you start crying,
but everything is relative
this morning i went to a local electronic store to see if they had anything that would fit, but i came back empty handed,
but got a $168 ticket +3 points for failing to do a complete stop.
so in the end that $15 with digikey is a bargain versus driving to my local store
ok back to topic, original cap has 1.9 ripple and the one i listed has 1.44 does it matter?...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
ok i think i found the culprit
teapo 330uf 400v
can i replace it with
[url]https://www.digikey.ca/product-detail/en/LGU2G331MELB/493-2805-ND/1004466[/url]Re: OCZ 700 Watt Bug Zapper Recap & .../1004466[/url]...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
thanks a lot for the help,
i am going to do some reading like you suggested and i will be back with pictures when i am ready,
thank you again
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Re: Samxon capacitor quality discussion (spin-off from OCZ Bug Zapper thread)
it's not green, it's black
serie sf, date, i don't know, monitor was built in 01 2008
working hours: well let's say 5 hours a day for 7 years
t°: normal operating temperature for a monitor in a living room...
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Re: OCZ 700 Watt Bug Zapper Recap & Repair
hi sgtrock
after reading your post, it looks like you have a good knowledge of the ocz modxstream series.
i have a dead ocz500mxsp, fan not spinning no power coming to the motherboard,
what should i look first, i already opened it, but do not see anything obvious (bulged caps etc...)
thanks
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