This is a micro ATX LC Power power supply, not L&C. The label is missing info such as 3.3V & 5V combined power, 12V total output power and total output power. How convenient!
Overall, the psu is not so bad.
There is just 1 common mode coil and no spot on PCB for a thermistor. There are spots for MOV but they are missing.
Input caps are 2x HEC 470uF 200V, their real capacitance is 452uF. The main transformer is ERL-33 and the switching transistors are 2x13009 but in TO-220 package. I would say it is a 250W unit.
5vsb is generated from BH0F70A, this is good.
SG6105D combo PWM and supervisor is used for this half bridge unit.
Toroid coils look good for 250W, 3.3V and 5V use S20C45C schottky rectifier and 12V uses U20C20C ultra-fast rectifier.
I found A928, PNP transistor that failed open. I will attach some pictures of the unit later
Overall, the psu is not so bad.
There is just 1 common mode coil and no spot on PCB for a thermistor. There are spots for MOV but they are missing.
Input caps are 2x HEC 470uF 200V, their real capacitance is 452uF. The main transformer is ERL-33 and the switching transistors are 2x13009 but in TO-220 package. I would say it is a 250W unit.
5vsb is generated from BH0F70A, this is good.
SG6105D combo PWM and supervisor is used for this half bridge unit.
Toroid coils look good for 250W, 3.3V and 5V use S20C45C schottky rectifier and 12V uses U20C20C ultra-fast rectifier.
I found A928, PNP transistor that failed open. I will attach some pictures of the unit later
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