My Sparkle (SPI) PC power supply has broken. Originally, there was totally no power output. The 5V-standby was not there. I have replaced a few bulged capacitors but not helping.
I was trying to do more troubleshooting but burned more components. Some got burned so badly that the markings were gone. And also, the markings of a few transistors were gone because the component surface was worn out somehow.
If you happened to have disassembled the same PSU model, please help to provide the markings of some of these components.
See the attached two pictures of the small circuit board (which was soldered to the main board). The components circled in red are the ones that I need help identifying the markings (1 resistor and 9 transistors).
If you have schematics/service manual for this model or a similar model to provide, that will be useful!
At this point, I am not sure if I will order the components to attempt fixing it. The chip UCC28512DW is burned. Not sure if it was damaged originally or not, but it got burned more while i played with troubleshooting it, and some more other components, including 1 power transistor.
Since there are quite a few damaged components, and i don't know which other components need replacement, I am in the process of evaluating whether I should continue to work on it or not. I don't feel confident that I can fix it.
It is a waste to throw it away though.
Thank you!
I was trying to do more troubleshooting but burned more components. Some got burned so badly that the markings were gone. And also, the markings of a few transistors were gone because the component surface was worn out somehow.
If you happened to have disassembled the same PSU model, please help to provide the markings of some of these components.
See the attached two pictures of the small circuit board (which was soldered to the main board). The components circled in red are the ones that I need help identifying the markings (1 resistor and 9 transistors).
If you have schematics/service manual for this model or a similar model to provide, that will be useful!
At this point, I am not sure if I will order the components to attempt fixing it. The chip UCC28512DW is burned. Not sure if it was damaged originally or not, but it got burned more while i played with troubleshooting it, and some more other components, including 1 power transistor.
Since there are quite a few damaged components, and i don't know which other components need replacement, I am in the process of evaluating whether I should continue to work on it or not. I don't feel confident that I can fix it.
It is a waste to throw it away though.Thank you!
Attached Files