Hello,
I am trying to fix a switched mode power supply on a piece of audio equipment. This would be my first time doing so (I have not worked with AC before) and I'm not sure what to look for. The issue is that there is no power coming from the output 12V pins and the power supply makes a clicking sound every second coming from the control circuitry (which is a package containing SCC6210A, 2 electrolytics and some other parts).
This happened one day when powering on. The only other symptom leading up to the failure that I have noticed is that when plugging in the power cable, I would hear a click/spark. Many power supplies do that when plugging in, except my other working unit does not do that.
The equipment I have is a multimeter, soldering station, a device to test capacitance/ESR/diodes/transistors as well as another working SMPS (same model). I have already tested the fuse as well as each resistor and they are all within tolerance, so something else is causing this. There are also no visibly burned or damaged parts.
Attached is a schematic of the SMPS.
Any help would be greatly appreciated.
I am trying to fix a switched mode power supply on a piece of audio equipment. This would be my first time doing so (I have not worked with AC before) and I'm not sure what to look for. The issue is that there is no power coming from the output 12V pins and the power supply makes a clicking sound every second coming from the control circuitry (which is a package containing SCC6210A, 2 electrolytics and some other parts).
This happened one day when powering on. The only other symptom leading up to the failure that I have noticed is that when plugging in the power cable, I would hear a click/spark. Many power supplies do that when plugging in, except my other working unit does not do that.
The equipment I have is a multimeter, soldering station, a device to test capacitance/ESR/diodes/transistors as well as another working SMPS (same model). I have already tested the fuse as well as each resistor and they are all within tolerance, so something else is causing this. There are also no visibly burned or damaged parts.
Attached is a schematic of the SMPS.
Any help would be greatly appreciated.
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