Guys,
Last night my Corsair CMPSU-650TX instantly, and without any warning, smoked and tripped the breaker on the UPS. After opening the PSU, (thus voiding the warranty), close visual inspection showed D301 on the main board, which is a 1N5406 rectifier diode, (600 Volts, 3 Amps), was split longitudinally and partially melted.
I lifted one leg from the circuit and Ohmed it, which indicated a dead-short forward and reverse. Without a schematic diagram, (which I'm sure is proprietary), it's difficult to determine D301's exact function, but a little reverse engineering shows that it feeds a switching FET bank on the input side of transformer T001.
Since this PSU was less than a year old, and was well ventilated in an Antec 900, my questions are:
(1) Has anyone encountered this problem with the CMPSU-650TX?
(2) Does anyone know if the 1N5406 is a high failure rate component in this PSU?
(3) Are there any other components known to cause D301 to fail?
Thanks,
Comp
Last night my Corsair CMPSU-650TX instantly, and without any warning, smoked and tripped the breaker on the UPS. After opening the PSU, (thus voiding the warranty), close visual inspection showed D301 on the main board, which is a 1N5406 rectifier diode, (600 Volts, 3 Amps), was split longitudinally and partially melted.
I lifted one leg from the circuit and Ohmed it, which indicated a dead-short forward and reverse. Without a schematic diagram, (which I'm sure is proprietary), it's difficult to determine D301's exact function, but a little reverse engineering shows that it feeds a switching FET bank on the input side of transformer T001.
Since this PSU was less than a year old, and was well ventilated in an Antec 900, my questions are:
(1) Has anyone encountered this problem with the CMPSU-650TX?
(2) Does anyone know if the 1N5406 is a high failure rate component in this PSU?
(3) Are there any other components known to cause D301 to fail?
Thanks,
Comp