Hi,
I have a couple of ATX (Switching) power supplies that are the exact make/model that have blown a fuse.
I also have many others that are fine same make/model.
I gave throwing another fuse in one of them a try and it blew. I understand I have a short and that it's common for a diode to go bad and cause this issue.
I have a power supply of the same make and model I have used to compare readings from that is in working condition.
I am not sure which parts I should check and how I should check them but I have checked a few of the black and gray (what I believe is diodes) next to the large capacitors (filter capacitors?) On one of the problematic PSU, 2 of the "diodes" are coming up dead short using my MM set on Ohms. At the same time when I check them if I hold the probes for a few more seconds I begin to get a very low resistance reading but it always starts our dead short on those diodes only. I also understand that the "filter capacitors" could be bad but I am unsure of the best way to check them to know and/or if the filter capacitor is what I think they are (the 2 big capacitors).
I could basically use some help on solving this issue, things to look for, advise, troubleshooting tree etc. As this happens from time to time and simply replacing the unit is not a fix for my issue.
Thank you for any help.
I have a couple of ATX (Switching) power supplies that are the exact make/model that have blown a fuse.
I also have many others that are fine same make/model.
I gave throwing another fuse in one of them a try and it blew. I understand I have a short and that it's common for a diode to go bad and cause this issue.
I have a power supply of the same make and model I have used to compare readings from that is in working condition.
I am not sure which parts I should check and how I should check them but I have checked a few of the black and gray (what I believe is diodes) next to the large capacitors (filter capacitors?) On one of the problematic PSU, 2 of the "diodes" are coming up dead short using my MM set on Ohms. At the same time when I check them if I hold the probes for a few more seconds I begin to get a very low resistance reading but it always starts our dead short on those diodes only. I also understand that the "filter capacitors" could be bad but I am unsure of the best way to check them to know and/or if the filter capacitor is what I think they are (the 2 big capacitors).
I could basically use some help on solving this issue, things to look for, advise, troubleshooting tree etc. As this happens from time to time and simply replacing the unit is not a fix for my issue.
Thank you for any help.