Thank you so much! Great video. I am beginning electronics repair learning. Love your video. You jump right in to point showing everything and zooming in. This helped me fix 1 x box charger . but I'm stuck with another and cannot figure it out ...(yet). This one orange light is on until press power,then goes red. High side ( a.c) works,but not low side (d.c.) it gives the standby voltage,(5-v)but not power voltage (12-v). If you have suggestion ,please message. I will watch more of your videos to learn more. Thank you.
That was the failure, could you postulate as to what caused it? Resistors don't tend to do this sort of thing without a reason. From its value I presume that was a current sensing resistor in the Source circuit of the power mosfet. True? So was it faulty from the start (during manufacture) or was it destroyed by an unusually strong (and long) current pulse?
That is interesting that this turns on by connecting 5v to a unpowered12v rail which activates the 12v. Instead of say a turn on feed to the hot 5v or grounding the turn on feed wire. So does anyone know if when I cut the cord I will just have 3 feed wires? And are both of the outer ground terminals actually grounds? The other models of psu seem to have a turn on feed (blue) which you connect to the hot 5v red. They have 4 different wires.
muchas gracias. no está conectado a 12 voltios. hay un pin interno, llamado PSON (para encender la fuente de alimentación principal, cuando aplicamos 5 voltios a ese pin interno, se enciende la alimentación principal) luego está el anillo exterior y los conectores del anillo interior anillo exterior es potencial de tierra. mientras que el conector del anillo lateral interior es una conexión de 12 voltios
Amazing repair. dear sir u dont have atx's ?? I have 2 atx , with same problem that when i push pson then volt on uc3843 vcc goes down to 7v n before this its 14v, their 5v sb ok, using tny279... what should I do? plz hint
Hello everyone, your channel is very good! I have a problem with an XBOX ONE power supply, the typical failure of the three inflated capacitors in the 12v output, there are several videos on the internet with this failure, they simply change them and that's it the machine works again, but in my case I changed all three for new ones with the same values and when I connected the power source back to the Xbox smoke came out, but something very curious happened!!! Now only one capacitor burst Of those that I changed, my question is, what could have caused this???, because now only one burst???, the polarities are correct and it does not touch any solder, there are no traces of tin, I have already tested and measured everything and I can't find the problem, according to what I read, it could be an optocoupler in poor condition, could it be??? And what causes the three capacitors in that part to inflate???, anyway, I would appreciate your help or that of the people subscribed to this channel, thanks in advance and greetings from Argentina.....
Hello,! I read your comment. I have same issue. Did you ever figure yours out? Changed my three caps for 12v and upon replugging...pop! Only two now popped. Any answers? Greetings from n.j.😅
The sparks could be seen flying in the resistor before you zoomed in on it. Amazing, but what causes the resistor to fail this way? Very recently I had to replace a dimmable led light bulb that died very suddenly and smelt like something burnt inside. I am not using it with a dimmer. Even though it is well inside the warranty limit I opened it to see what had happened. I found an ic chip DX3580T with missing pin/leg #3 which according to a datasheet is: SW Drain pin of the internal LV MOSFET. It looked like it had burnt and there was no visible trace of it and the plastic(?) casing of the chip was missing a piece next to pin #3. There were 3 failed film capacitors (2 split open and the insides oozing out) and 2 large resistors open (1 had a piece of the coating broken off). There were more damages to components on the PCB, to many to count here. There was a large amount of thermal paste covering the capacitors and resistors. The thermal paste was in contact with wires from both resistors which were installed virtually vertical. My question is, can thermal paste conduct electricity and cause this damage?
yes dear, it was also a great surprise for me to catch the sparking moment of a smd power resistor. it is a common failure in power resistors, specially in carbon film resistors, with compare to the wirewound resistors, the carbon film or carbon composition resistors are less rigid. DX3580T is a common LED driver chip and with a single spike with a slighter high amplitude can damage it permanently. as the SW pin 3 in this ic is the Drain pin of the internal power mosfet. if it is damaged that means that the internal mosfet is destroyed. it may damage from many reasons, 1. poor EMI filter 2. feedback failure 3. overload condition at driving end
When I turn on my xbox360, orange turn into red light immediately, xbox360 light makes click noise but doesn't start, I know my xbox360 is working, cause I checked it with another supply
Good job 👍👏👋
best regards dear friend
Excellent. First time I see a sparking SMD resistor ! So StbyV was missing thus PSU couldn't switch to ON
why didn't you show the intricate process of replacement?
Where was this resistor in the circuit ? . Is it possible to explain the effect of this faulty resistor on the operation of the circuit ?
Wow, it's very difficult to see that little sparks on resistor.
You are a great! thanks for share this new video
Thank you so much! Great video. I am beginning electronics repair learning. Love your video. You jump right in to point showing everything and zooming in. This helped me fix 1 x box charger . but I'm stuck with another and cannot figure it out ...(yet). This one orange light is on until press power,then goes red. High side ( a.c) works,but not low side (d.c.) it gives the standby voltage,(5-v)but not power voltage (12-v). If you have suggestion ,please message. I will watch more of your videos to learn more. Thank you.
I have the same problem. Did you figure out how to fix it ? Would you mind to share how to fix that problem ? Thank you 🙏
sir your way of describing is amazing you tell us about every single point thank you so much sir for providing us this knowledge ❤❤
thanks a lot
That was the failure, could you postulate as to what caused it? Resistors don't tend to do this sort of thing without a reason. From its value I presume that was a current sensing resistor in the Source circuit of the power mosfet. True? So was it faulty from the start (during manufacture) or was it destroyed by an unusually strong (and long) current pulse?
How did you recognise the resistor value? Was resistor marking still visible?
no. i remember it. i faced this problem many times. in past i had to find the same model to get the resistor value
@@HaseebElectronics thank you sir
Salamalecum please I have the same thing there please when repairing it can you use 110v to add with the 220v or 110v straight
Hello, could you explain the conversion process from 220V to 110V for Xbox360 power supply, greetings and thank you.
Assalam alekum sir AP solder wire Konsa use Kar Rahe Hain
i use BOW electronics solder wire 60/40
CASTER solder wire 60/40
alpha solder 60/40 and 63/37
and mechanic solder paste 63/37
Is high voltage arching over the resistor.
Please help. I want to convert a dual xbox connector to another connector that has six inputs, which is also for xbox
That is interesting that this turns on by connecting 5v to a unpowered12v rail which activates the 12v. Instead of say a turn on feed to the hot 5v or grounding the turn on feed wire. So does anyone know if when I cut the cord I will just have 3 feed wires? And are both of the outer ground terminals actually grounds? The other models of psu seem to have a turn on feed (blue) which you connect to the hot 5v red. They have 4 different wires.
friend, where/how can I find equivalent of this ic- MA803AS2 ?
excelente. pregunta? ¿Porque puenteas los 5 volts de standby a los 12 volts ?Espero que me entiendas... un abrazo amigo...
muchas gracias. no está conectado a 12 voltios.
hay un pin interno, llamado PSON (para encender la fuente de alimentación principal, cuando aplicamos 5 voltios a ese pin interno, se enciende la alimentación principal)
luego está el anillo exterior y los conectores del anillo interior
anillo exterior es potencial de tierra. mientras que el conector del anillo lateral interior es una conexión de 12 voltios
@@HaseebElectronics gracias por responder, y mejorar mi ignorancia. un abrazo amigo.
A light emitting resistor, awesome
Amazing repair. dear sir u dont have atx's ??
I have 2 atx , with same problem that when i push pson then volt on uc3843 vcc goes down to 7v n before this its 14v, their 5v sb ok, using tny279... what should I do? plz hint
Specialist in Smps
Thank you! I watched another video of same ps here , clearly this other guy did not have clue of how to fix it.
How come your 115v line voltage is low?
i use step down transformer, as in my country, here is 220 supply
@@HaseebElectronics Makes sense then.
Wonderfull, thanks ! You should add to the title "no led light". I was desperate to find a video helping to fix it. Thx !
You give a lot of info one day build my own switching power supply. I have a lot of used parts.
Great repair, great video like always...
Sir what if it's lighting but for a few seconds it turns off what seems to be the problem... Is it the same problem as this??
I have the same problem
Why used three optocoupler in this power supply
Seperate rails?
@@CamelCasee please send me details
@@anwarjamal8908 Each voltage rail might be regulated independently or maybe there's some kind of power good/fault signalling back to the switcher Ic.
Bu işin üstadısın. Teşekkürler.Allah CC seni korusun.
How to check check any speaker ohm and watt
sure i will try to explain it
تشکر از شما عالی بود ❤IRAN تهران
Subha Bakher Ho Janab Bhai Saab
best regards
great content..Learning From you
thanks a lot dear brother 💖
Hello everyone, your channel is very good! I have a problem with an XBOX ONE power supply, the typical failure of the three inflated capacitors in the 12v output, there are several videos on the internet with this failure, they simply change them and that's it the machine works again, but in my case I changed all three for new ones with the same values and when I connected the power source back to the Xbox smoke came out, but something very curious happened!!! Now only one capacitor burst Of those that I changed, my question is, what could have caused this???, because now only one burst???, the polarities are correct and it does not touch any solder, there are no traces of tin, I have already tested and measured everything and I can't find the problem, according to what I read, it could be an optocoupler in poor condition, could it be??? And what causes the three capacitors in that part to inflate???, anyway, I would appreciate your help or that of the people subscribed to this channel, thanks in advance and greetings from Argentina.....
Hello,! I read your comment. I have same issue. Did you ever figure yours out? Changed my three caps for 12v and upon replugging...pop! Only two now popped. Any answers? Greetings from n.j.😅
Very good and useful information sir thanks for sharing this knowledge to us
Stay blessed dear brother good job👍
The sparks could be seen flying in the resistor before you zoomed in on it. Amazing, but what causes the resistor to fail this way?
Very recently I had to replace a dimmable led light bulb that died very suddenly and smelt like something burnt inside. I am not using it with a dimmer. Even though it is well inside the warranty limit I opened it to see what had happened. I found an ic chip DX3580T with missing pin/leg #3 which according to a datasheet is: SW Drain pin of the internal LV MOSFET. It looked like it had burnt and there was no visible trace of it and the plastic(?) casing of the chip was missing a piece next to pin #3. There were 3 failed film capacitors (2 split open and the insides oozing out) and 2 large resistors open (1 had a piece of the coating broken off). There were more damages to components on the PCB, to many to count here. There was a large amount of thermal paste covering the capacitors and resistors. The thermal paste was in contact with wires from both resistors which were installed virtually vertical. My question is, can thermal paste conduct electricity and cause this damage?
yes dear, it was also a great surprise for me to catch the sparking moment of a smd power resistor. it is a common failure in power resistors, specially in carbon film resistors, with compare to the wirewound resistors, the carbon film or carbon composition resistors are less rigid.
DX3580T is a common LED driver chip and with a single spike with a slighter high amplitude can damage it permanently. as the SW pin 3 in this ic is the Drain pin of the internal power mosfet. if it is damaged that means that the internal mosfet is destroyed.
it may damage from many reasons,
1. poor EMI filter
2. feedback failure
3. overload condition at driving end
Good morning sir nice video 2.2ohs burn replacement power supply ok tq sir 🙏🙏🙏🤝🤝🤝💐💐💐
Excellent . Thank you sir.
Good job 👍
best regards
Very informative video. Thanks
Kalau merah aja apanya yg bermasalah bos
jika dibaca. itu berarti ada hubungan pendek di sisi keluaran, atau dalam kondisi kelebihan arus
@@HaseebElectronicswhen I turn my xbox360 on, orange turns to red light immediately
When I turn on my xbox360, orange turn into red light immediately, xbox360 light makes click noise but doesn't start, I know my xbox360 is working, cause I checked it with another supply
Selamün aleykum ..I am looking forward to the electric bike charger repair video..48 volt 60 volt 72 volt it does not matter..
👍🇹🇷🇹🇷🇹🇷👍
God bless you for sharing information
🙏Grazie maestro. 👍
Good thank you
Good job 👍🏻 ❤❤❤
Great!!! Thank you.
Impressive.
best regards
Sir thank you for translet to farsi
بابت ترجمه به زبان فارسی از شما سپاسگزارم
Excellent thanks for sharing this informative video
best regards
Master,💐🙏
nice lk🌺
Hello sir, when I turn on my xbox360, orange lights turns into orange light
وعليكم السلام ورحمة الله وبركاته
👍
Salamun Alaykum