Thanks for the video, very interesting. Whenever I come across a failure like this, it always leaves me wondering why it failed. Especially when it is a large semiconductor like that.
Nice repair ! Thanks ! If one day, you have a PC power supply whose main fuse explodes all the time, I would be very interested to see how to repair it, especially if it's a "Aerocool VP-550"... I could detect at least 5 defect pieces : 1) thermistor (SCK-2R56, 2.5 ohm, 6A) : upper part is broken showing its guts, but the test shows correct resistance... 2) bridge rectifier (GBU606) : tests shows 2 diodes broken 3) MOSFET MDP13N50 (sits just next to the bridge rectifier on the same heatsink) : it is short 4) filter capacitor (JUNFU, 180µF, 400V) : test shows 5.5µF instead of 180µF, but no short 5) STR-A6xxx IC (7 pins, PWM controller, sits very close to the filter capacitor) whose surface has exploded (I can see its guts and only the 2 first digits of its ID...)
Good day, Sir! I have also same symptom of power supply from IBM Server PC with brand Delta but true rated 350 watts. No bloated electrolytics. I hope I will repair it. Thank you for your video and greetings from Philippines! I subscribed to your channel because of your skills in repairing power supplies for computer. All the best in your electronics endeavour!
@@electronicshaverightstolive Much obliged, Sir. That new diagnosis is so new for me since that and the Delta I now check up, has power factor corrector circuit, and honestly in some old televisions they have power factor corrector circuit too which i remember how the bulb behaves, blink then stop then blink then stop and when you bypassed the high voltage line, it worked normal though the light is constantly lit up. So interesting behaviour. I wonder why such kind of power supplies with power factor corrector circuit, they use that huge damper diode and for switching, they use MOSFET instead of NPN transistor?
Nice work thank you for the efforts, i would like to ask you a question please, i have a ps4 psu that has the standby voltage oscillating, the caps looks fine, could the optocoplers cause this problem? Considering that i tested all components for short and they are all fine. Thx
Optocouplers rarely fail but it is possible. For myself i made a tester for Optocouplers, scematics is very easy, you can find it at Google. Sometimies it can be tl431, you should check it as well. But anyway first of all even though caps look fine doesnt mean that they are fine. You should desolder electrolytic capasitors at standby PWM IC and at the output of standby transformer and test them off pcb.
Just curious, Sir. Do you have electronic parts with rust on their leg? TL431 and optocouplers are always partners for feedback circuits. Sometimes they have 2SC1815 with them and if one leg is rusted from that, the unit will behave wild or may not work.
Thank you. I learnt how to check for short of 12 3.3 and 5v from this video. I have antec bp450p with the same problem like yours. Mosfet, fuse and diode blown. Ordered parts and will try repair. And if I have a series lamp without isolating transformer, if there is a short when i power on, will it affect other devices? Two of my psu got blown and wondering if it is possible!
I have a question, I have 2 of the 630w version, no problems with them. But since you had a close look at the components. Did the PSU look ok, or is it the worse China s..t you came across
I need your help, I bought a thermatltake psu 700W rgb, but it does not work, the lights and the fan do not turn, but there is still electricity in it and it heats up without working
Hi i got same psu. i got 10 omhs in the q1 and q10 between side pins , just after sense resistor R6 & r6a (those resistor give 0 omhs outside the board, are they 7.5komhs?) means that the Q's were burnt out? also fuse blown. no sig of "fire" in components. no short in outputs. thx man, great video.
@@electronicshaverightstolive ya, i took off the transistor heatsink of the primary. and 1 transistor was blown, same as 2 mini mosfet diode sot23. thx you man. any suggest?
Hello Sir, I have the same model PSU. My PSU got fried due to OverVoltage in my house and when I open the cover, I've found a burnt component (looks like a round pulse, cover with shrink wrap) near to FUSE location 20:45 , According to my research that was a protection system to avoid any harm to internal component but unfortunately gets burnt due to OverVoltage. Could you please help me to repair PSU? Can you tell me the value of that pulse shape capacitor or any alternatives? Thank You
Hello. That probably was a varistor. That's what protecting SMPS from overvoltage. Varistor about 270 volts should be enough. But even if you remove it completely the power supply should work like it supposed to. If there is no more problems with it.
Greate job..👏👏👏 Similer symptom.., Fan working for 1 sec and turning off the Powersupply. Coolermaster 1500w. I am shure with your help i can able to fix.. -Thanks in advance Sir..❤❤
Hi , i have same psu , my psu tester shows 990ms pg signal , 3.3 , 5v , 12v rail all good voltage but after 1 minute its flashing , psu reboot every one second.. can u help me ?! maybe same problem like u solve.
Excellent repair! Thank you.
Thank you too!
Thanks for the video, very interesting. Whenever I come across a failure like this, it always leaves me wondering why it failed. Especially when it is a large semiconductor like that.
Nice repair ! Thanks !
If one day, you have a PC power supply whose main fuse explodes all the time, I would be very interested to see how to repair it, especially if it's a "Aerocool VP-550"...
I could detect at least 5 defect pieces :
1) thermistor (SCK-2R56, 2.5 ohm, 6A) : upper part is broken showing its guts, but the test shows correct resistance...
2) bridge rectifier (GBU606) : tests shows 2 diodes broken
3) MOSFET MDP13N50 (sits just next to the bridge rectifier on the same heatsink) : it is short
4) filter capacitor (JUNFU, 180µF, 400V) : test shows 5.5µF instead of 180µF, but no short
5) STR-A6xxx IC (7 pins, PWM controller, sits very close to the filter capacitor) whose surface has exploded (I can see its guts and only the 2 first digits of its ID...)
Thank you!
Good day, Sir! I have also same symptom of power supply from IBM Server PC with brand Delta but true rated 350 watts. No bloated electrolytics. I hope I will repair it. Thank you for your video and greetings from Philippines! I subscribed to your channel because of your skills in repairing power supplies for computer. All the best in your electronics endeavour!
Thank you!
@@electronicshaverightstolive Much obliged, Sir. That new diagnosis is so new for me since that and the Delta I now check up, has power factor corrector circuit, and honestly in some old televisions they have power factor corrector circuit too which i remember how the bulb behaves, blink then stop then blink then stop and when you bypassed the high voltage line, it worked normal though the light is constantly lit up. So interesting behaviour. I wonder why such kind of power supplies with power factor corrector circuit, they use that huge damper diode and for switching, they use MOSFET instead of NPN transistor?
@@sophiestabilitronics mosfet is more eficient.
@@sophiestabilitronics huge diode is probably needed for dumping high current pulses at high loads.
Still sounds good at 150% speed.
Agree.
Nice work thank you for the efforts, i would like to ask you a question please, i have a ps4 psu that has the standby voltage oscillating, the caps looks fine, could the optocoplers cause this problem? Considering that i tested all components for short and they are all fine. Thx
Optocouplers rarely fail but it is possible. For myself i made a tester for Optocouplers, scematics is very easy, you can find it at Google. Sometimies it can be tl431, you should check it as well. But anyway first of all even though caps look fine doesnt mean that they are fine. You should desolder electrolytic capasitors at standby PWM IC and at the output of standby transformer and test them off pcb.
Just curious, Sir. Do you have electronic parts with rust on their leg? TL431 and optocouplers are always partners for feedback circuits. Sometimes they have 2SC1815 with them and if one leg is rusted from that, the unit will behave wild or may not work.
Thank you. I learnt how to check for short of 12 3.3 and 5v from this video.
I have antec bp450p with the same problem like yours. Mosfet, fuse and diode blown. Ordered parts and will try repair.
And if I have a series lamp without isolating transformer, if there is a short when i power on, will it affect other devices? Two of my psu got blown and wondering if it is possible!
Yes, lamp in series would help to save other elements if there's another problem.
Nice troubleshooting, thanks!
Thank you!
Nice fix, thanks a lot for sharing this.
Thank you!
I suscribed to this channel just for the name, thanks
Thank you!
Hi master.
I can’t find SGF380N60SJ mosfet.
Could you help me to equivalent it?
I have a question, I have 2 of the 630w version, no problems with them.
But since you had a close look at the components. Did the PSU look ok, or is it the worse China s..t you came across
Would u share the diy PSU ATX tester schematic, pls
I dont have a scematic unfortunately. Its an easy circuit. 4 leds and 4 resistors to ground from 12, 5, 3.3 and PS on lines.
@@electronicshaverightstolive I see.. Thx lots anyway
Nice testing tools
Проверяй эти синие входные конденсаторы, они тоже часто дохнут. Но они тащат за собой и все транзисторы в apfc, так что можно сказать повезло
Да, спасибо. теперь всегда проверяю.
I need your help, I bought a thermatltake psu 700W rgb, but it does not work, the lights and the fan do not turn, but there is still electricity in it and it heats up without working
May be there is a short at the output
Como kitar protección
Hi i got same psu. i got 10 omhs in the q1 and q10 between side pins , just after sense resistor R6 & r6a (those resistor give 0 omhs outside the board, are they 7.5komhs?) means that the Q's were burnt out? also fuse blown. no sig of "fire" in components. no short in outputs. thx man, great video.
Hi. Hard to tell about resistors since i dont have this power supply anymore. But usually when the fuse is blown its transistors to blame
@@electronicshaverightstolive ya, i took off the transistor heatsink of the primary. and 1 transistor was blown, same as 2 mini mosfet diode sot23. thx you man. any suggest?
@@gndworkshop I would replace everything that blew and try to turn it on trough a lamp about 100 Watts
@@electronicshaverightstolive thx a lot!! love you! i will tell how it goes. byeee
Is there any video of how to wire the lamp?@@electronicshaverightstolive
Hello Sir, I have the same model PSU. My PSU got fried due to OverVoltage in my house and when I open the cover, I've found a burnt component (looks like a round pulse, cover with shrink wrap) near to FUSE location 20:45 , According to my research that was a protection system to avoid any harm to internal component but unfortunately gets burnt due to OverVoltage. Could you please help me to repair PSU? Can you tell me the value of that pulse shape capacitor or any alternatives? Thank You
Hello. That probably was a varistor. That's what protecting SMPS from overvoltage. Varistor about 270 volts should be enough. But even if you remove it completely the power supply should work like it supposed to. If there is no more problems with it.
Greate job..👏👏👏 Similer symptom.., Fan working for 1 sec and turning off the Powersupply. Coolermaster 1500w. I am shure with your help i can able to fix.. -Thanks in advance Sir..❤❤
Caps are good for sure?
Well done
Excelente
Thank you!
Bro , i have 630W power supply from Thermaltake , it's working but sometimes it suddenly shuts down , what is the issue could be in ur opinion
It might be a bad capasitor in the PWM controller sircuit.
@@electronicshaverightstolive Thank you bro ❤️
Hi
I need your help ,
Hi. What is the issue?
My power supply work fine
But in pc load it make noise
How i fix it
Is the noise from components?
Inductors often get noisy under load.
It's coil whine
Hi , i have same psu , my psu tester shows 990ms pg signal , 3.3 , 5v , 12v rail all good voltage but after 1 minute its flashing , psu reboot every one second.. can u help me ?! maybe same problem like u solve.
Hi! At this behavior you should check electrolytic capasitors. Sometimies they dont look bulgy but anyway can loose their capasity.
@@electronicshaverightstolive thx I will try 😁
@@MrDexi87 you are welcome. I hope that would help. Also check big bulk capasitor
@@electronicshaverightstolive its same problem like on your psu , diode is shorted , but why ?! maybe bad design ? Your psu now work fine ?
@@MrDexi87 Hard to say why. Probably bad design, and working at high loads with overtemperature
Watching
nice one
HI SIR 800W IC Number
TNY1? ??
I don't remember unfortunately. Sorry.
MERA POWEAR SUPLY RIPAR KARNA HAI APKA PHONE NUMBAR DE SKATA HO