Comments on: No Power in ATX Power Supply Repaired-3 Components Replaced

By: manoj

manoj — Tue, 27 Apr 2021 13:00:35 +0000

sir in my atx short circutly resistor burned and black content is flowed in few area and atx is not working do i need to change the resistor??

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By: playit

playit — Tue, 17 Mar 2020 17:23:53 +0000

i am trying to fix mercury 400w psu.i was getting only 5vsb,then i was trying to fix open resistor in R23,i connected through hole 1.5k/0.5w ,it worked but i tried to solder little more for better fix but the pads came off both sides.. so i got frustrated and was carried away ,was trying to bypass some ,i saw smoke coming but couldnt say from where.. so then i came to know one of 4148 diode pair wasnt working,then i bought a new one and fixed it ,now i have put resistor from one end where i get 16v and joined other end to jumper which goes to primary side i guess,at other other side of jumper i get only 0.76v .. by the way.. please reply me anyone..i am so stuck. i dont know if its normal or not ,i should change the h945p 8b3 transistors or the diodes..pls help,thanks

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By: Bibin augustin

Bibin augustin — Fri, 21 Sep 2018 08:23:31 +0000

In reply to Parasuraman S.

Can you tell me or show me a clear picture of the resistors in the primary side
I have same amps but 3 resistors are burned down i don't know which is those resistors

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By: Ulises Aguilar Pazzani

Ulises Aguilar Pazzani — Tue, 14 Mar 2017 01:52:44 +0000

Mr Panchal great fix Fix

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By: Yogesh Panchal

Yogesh Panchal — Sun, 26 Jun 2016 16:59:48 +0000

Thanks to everybody for your comments.

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By: Yogesh Panchal

Yogesh Panchal — Sun, 26 Jun 2016 16:58:42 +0000

Janyes,

Just remove the Fuse and connect 100 W Bulb Across fuse in series.
(in place of fuse - after removing the fuse ).
After applying power to equipment
1) if bulb Light up initially bright then goes dim that min there is no short circuit .
2) if bulb Light up Bright and stay Bright that mean there is some short circuit.

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By: Paris Azis

Paris Azis — Sun, 26 Jun 2016 14:51:27 +0000

Good job Yogesh!

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By: janyves

janyves — Sun, 26 Jun 2016 12:54:11 +0000

Sir... Great job! I tried to enlarge the pics to see how you connected the 100w lamp test. But my sick phone wouldn't do that(no thanks to @Hp ) for failing to fix my slate 6. I want to see how tha lamp is made to limit current while testing devices. This is my first time seeing the atx power tester.

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By: Albert van Bemmelen

Albert van Bemmelen — Thu, 23 Jun 2016 09:02:30 +0000

Hi Franzis Fernandes.
I tried to help you but it looks like your 5808 8-DIL
IC does not exist as being a PWM controller. So I think
that if you use the correct typenumber with first
previous IC nametype Characters. You probably are able
to find its Datasheet In Google. And the correct
replacement chip. Good Luck !

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By: Albert van Bemmelen

Albert van Bemmelen — Thu, 23 Jun 2016 06:58:24 +0000

In reply to Peter Owens.

Hi Peter. I do not know what type of Tester Yogesh exactly used. But I have used this one ($6.5 dollar) with an LCD. See: http://nl.aliexpress.com/item/1Pcs-Free-Shipping-Computer-PC-Power-Supply-Tester-Checker-20-24-pin-SATA-HDD-ATX-BTX/32608264895.html?spm=2114.010208.3.19.5DsMTj&ws_ab_test=searchweb201556_0,searchweb201602_1_10037_10017_405_404_507_10032,searchweb201603_1&btsid=116dd132-6c22-43b2-a6b5-d2d956dd2569

I could have tested the Supply also by connecting it to a pc Mainboard, and even by just connecting the powerbutton wire connection and measuring all voltages with a standard Digital Universal Meter. But is easier and quicker with the given ATX LCD Tester. (And you can't blow up any mainboard accidentally either).

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