Dear All,
Sorry for my english.
I need some help concerning this power supply. It doesn't works anymore, any output voltage.
I put some pictures of power supply I trying to test it most of capacitors tested are ok. It's difficult to test small cms capacitors sometimes my multimeter doesn't display something. I've tested also with power on but impossible to get logical values for example I have alternative voltage in parts of continue voltage.
I've tested most of component I changed a opto-coupler but I don't think it was damaged. As you can see in picture 225300 when I open cover I found burn part (metalic ring) between two tracks. I removed it but you can see burn marks.
If someone can help or can get a shematic because it's difficult to me to fix board with alternative voltage because I don't have oscilloscope.
I have also a problem with cms diode I don't know the sense.
Thanks for your help.
Sorry for my english.
I need some help concerning this power supply. It doesn't works anymore, any output voltage.
I put some pictures of power supply I trying to test it most of capacitors tested are ok. It's difficult to test small cms capacitors sometimes my multimeter doesn't display something. I've tested also with power on but impossible to get logical values for example I have alternative voltage in parts of continue voltage.
I've tested most of component I changed a opto-coupler but I don't think it was damaged. As you can see in picture 225300 when I open cover I found burn part (metalic ring) between two tracks. I removed it but you can see burn marks.
If someone can help or can get a shematic because it's difficult to me to fix board with alternative voltage because I don't have oscilloscope.
I have also a problem with cms diode I don't know the sense.
Thanks for your help.
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