I found this switching power which has a blowed fuse checked diodes which were still good out of circuit checked main filtering capacitor with an ESR meter 220uf@450 volts 0.15 value which to me seem bad but maybe not but without these items not in the circuit because I have about 8 ohm on the output of the capacitors so I removed the switching power supply transformer and checked it with a ring tester and all but one winding showed good all others either showed two red lights or no lights on and one winding had all lights on which was the only one that was good
One other check that I did on this switching power supply transformer was I took the ESR meter and checked the winding and the valves on the were very low resistance except for the winding that had good had higher resistance value
One thing I noticed is that this switching power supply does not seem to have a switching power supply regulator which I found a little odd but it does have an optic sensor between the hot and cold side of the switching power supply
This is the third or fourth time that this ring tester has come in very handy to troubleshoot a switching power supply issue with a blowed fuse on input power supply lines in
One other check that I did on this switching power supply transformer was I took the ESR meter and checked the winding and the valves on the were very low resistance except for the winding that had good had higher resistance value
One thing I noticed is that this switching power supply does not seem to have a switching power supply regulator which I found a little odd but it does have an optic sensor between the hot and cold side of the switching power supply
This is the third or fourth time that this ring tester has come in very handy to troubleshoot a switching power supply issue with a blowed fuse on input power supply lines in
CAPs POOF
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