Відео

*that is unless you know what you're doing

It depends how old or new it is as it works for some psu and some not or getting trip due to safety ic since all circuits are different in there so yea it did worked for some people and some other psu didn't do

Obviously not all power supply are same as u seen my video I didn't even mention any ic to work with all as I did is messing with up the optocouplers where atx supply mostly have multiple optocouplers like 3 or 4 as my supply i had try to do same to ur supply as I did in video (because ur doing this to your own risk some supply don't work like that since all are not same circuitry some just gets trip that u can't modify it or some might gets damage as well)

@@technicalsos1109 ok 👍 Thanks brother

​@@technicalsos1109brother in my atx there is only one optocouplar "pc817"

@@harman22595 then that one opto is used for feedback only means it is even more risky that it could destroy ur supply I did this to my laptop supply that had one opto and it worked like it could only vary from 9 to 20v but same I did to other supplys that it had single opto they didn't work or some got destroy after that

@@harman22595 I suggest u to leave that supply u could destroy it completely it is only workable on atx power supply that had multi optos

Its not for protection its for voltage feedback to stabilize the output voltage but u can not bypass the protection of an one optocoupler supply because it has its setting in its controller ic u Can't do anything for it

@@technicalsos1109 oh tanks

R u talking about optocouplers or main secondary ic?

@@technicalsos1109 optocouplers

@@FRCO-cv8uc try powering through ups or inverter that trips if something goes wrong and try shorting both pins of each optocuplurs on primary side

@@technicalsos1109 i tried and it works very fine, thank you, you are the best

@@FRCO-cv8uc ur welcome 🥰

Ur welcome my brother i really appreciate ur work done successful

I will try too if i find an atx supply that has 6105 ic in there

Plz don't try it urself its really unsafe these things can only done by experienced person

Well im not responsible for your loss u did it on your own risk , you might have did it wrong some were that in my experience the main ic never blows while working with couplers

@@technicalsos1109 yeah i did the connected the ground in secondary side !! lol

@@xtonx-theofficialbeechslay1575 see u should've done it first on primary side not on secondary side

@@technicalsos1109 yes bro first i was in a rush and video was slightly unclear!! then after burnt it I watched the video again and realized I fcked up

😂

😂

There is an 8 pin protection ic in which it protects it. u have to find the ic by using internet search to see how to disable it few days before i modified the 180w dell atx PSU in which it provides 12 or 20v without any problem

@@technicalsos1109 it's a Newton Power nps-180db a, are you familiar with this kind of power supply? it's a very old one

@@technicalsos1109 I believe it uses a DNA1001DL IC

@@hichambenhammouda7368 yes it is similar the one. I worked with before

@@hichambenhammouda7368 yes u found correct one this is the ic

For safer work remove two pins of optocoupler of any one of them in secondary side , if the supply stops the output then remove that optocopler and add 50k or 100k pointentiometer at primary side pins ,i did this on my 19v laptop charger and now its goes from 5v to 20v variable voltage that might help you too

@@technicalsos1109 very interesting, i will try that. But what if i have only one optocoupler, would this adapter still be regulated ? thanks.

@@hichamtassi1753 it depends upon the model or design of circuit if it works then its Good to go if it doesn't don't do it further

No it doesn't effect any changes in voltage or current this can be done by hacking in to PWM ic (if it designed to increase its duty cycle) than it will increase its voltage up to 16v

​@@technicalsos1109 Thank you for answering. I have many ATX with no output probably due to some shorts in the secondary side which bring FPO high. Can you please make a video on how to bypass safeties and protections in ATX for another use besides computers as they can be a very good power supplies to charge batteries, make 12v fridges work as well as car air compressors. But SUPERVISORS with OVP, OCP turn SMPS off and stay useless... THANKS !!!

@@hichamtassi1753 use multimeter to find out the short circuit in supply and for turning off safety this method will work for every supply since coupler is used to communicate through primary and secondary circuits but dealing with secondary is dangerous and might kill the supply or person

@@technicalsos1109 Well noted. But how to find the short with multimeter as the PWM is down due to fault. In some ATX, there are so many SMD components that it is very difficult to trace and find.

@@hichamtassi1753 first trace from output wire than from capacitor mostly cap fail more and than diodes ,resistor than the PWM Ic in secondary this might help u to find out shortly

Try to find pointiometer in circuit board and try to adjust thats the simplest way but if still doesn't work try to short the pins of optocoupler one of them only in primary side and remove that coupler and add 100k pointiometer on pins of primary side may there are more than one or two or may be three couplers too in result the power supply never trips but this is risky too as it could harm or destroy the supply or ur electronics

@@technicalsos1109 thamks

But thankfully it still works today cuz its safety system is still active

So try to short the pins of optocoupler from primary section and see if it doesn't trip or malfunction ,if the power supply trips or malfunction on shorting then do nothing or remove the optocoupler and connect 10 to 50k potentiometer on two pins of optocoupler location pins in primary side in this way u will have variable power supply from 5v or 8v to 20v to 30v output (but u have to manage the voltage manually as u give the load)

@@technicalsos1109 as I shorted them the atx stopped working and one resister burnt out

@@SumanthgamingR then it means the design of circuit is not built for this purpose (is the power supply ok ,if it is then replace the resistor to work again and I think the resistor that burnt must be used for voltage regulation) playing with optocoupler works in some smps or atx just like I did in video or my dell laptop charger were it has two optocoupler and one was failed but I replaced 10k resistance that it produced 11.6 volt but after that I put pointetiometer of 50k and it output 8v to 20v from laptop charger so your maybe not lucky for this supply but I think most of this atx or smps work with two or more than two optocoupler

@@technicalsos1109 thanku

Good job