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Need help on PSU for repair it
Hello to all :) my PSU Seventeam ST-220FBU-05E is burned, I need to know the code on 1 diode under the PCB and the value of 1 resistor for repair it. Please, there is anyone that tell me which are...
This pcb looks likes it has been toasted before..... The repaired tracks as a silent wittness. For the diode, i don't have a clue.
I am answering to this topic coz the numbering next to the sublimated resistor looks like they are referring to a failsafe resistor. The ones who are supposed to burn in case something goes wrong. Maybe you are lucky and the diode was the cause of this and I hope you find the right type.
Another tip from my side. My experience with switching power supplys.... capacitors, capacitors, capacitors. So if you get this thing running again i suggest to replace all secondary capacitors you can find and use high quality 105 degree types, coz they last a lot longer.
Another one... check for bad solderings. The photo shows some very questionable ones, the ones with a ring int the soldering, wich look a lot like cracks.
regards,
Erik
I am answering to this topic coz the numbering next to the sublimated resistor looks like they are referring to a failsafe resistor. The ones who are supposed to burn in case something goes wrong. Maybe you are lucky and the diode was the cause of this and I hope you find the right type.
Another tip from my side. My experience with switching power supplys.... capacitors, capacitors, capacitors. So if you get this thing running again i suggest to replace all secondary capacitors you can find and use high quality 105 degree types, coz they last a lot longer.
Another one... check for bad solderings. The photo shows some very questionable ones, the ones with a ring int the soldering, wich look a lot like cracks.
regards,
Erik
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