I have been given this EZ-Cool ATX-650 JSP. I don't believe that it is actually capable of 650W but it seems reasonably well built with a decently sized transformer and heatsinks.
Please see photos before reading further.
I have removed all the output caps and labeled where they go and some other things in the photos.
The 5V and 3.3V output caps were all 2200uF 10V fukyuu's and were visibly bulging. I intend to replace these with 10mm 2200uF 10V panasonic FRs.
It has 2 12V rails each with its own pi coil and output capacitor, which are 10mm 2200uF 16V Gi LOWRSR 105C 07B. They are not bulging and test OK on my ESR meter with 0.04ohms ESR. I have never heard of Gi capacitors before. Are they any good? Should I replace them anyway. The only 2200uF 16V 10mm caps that i have found are Panasonic FKs but these are over £1 each. I think I could manage to fit the better 12.5mm 2200uF FRs or FMs here if I raised them up above the pi coils with long legs but would that be ok?
The 12V output is rectified by two MOSPEC 16A ultrafast To-220 rectifiers in parallel. Should I replace these with Schottky's or will the existing ones be good enough.
The 5VSB circuit uses the 2 transistor design but doesn't have the critical electrolytic cap that causes the output voltage to go high. There has not been any excessive overheating.
The output caps were 2 1000uF 10V fukyoos, which were not bulging but I'm going to replace them anyway with 1000uF Panasonic FRs.
There is an unpopulated area on the PCB for an active PFC circuit. I would like to add this back if possible.
I would need the values for the resistors, caps, zeners and the part number for U1. In this place is a passive PFC choke that is screwed to the case. Does anyone have this PSU with the active PFC circuitry populated and could tell me the component values?
Should I also replace the small 10uF and 2.2uF caps?
The primary switchers are 2 D209Ls in half bridge configuration. I think equivalents would be MJE13009's?
Please see photos before reading further.
I have removed all the output caps and labeled where they go and some other things in the photos.
The 5V and 3.3V output caps were all 2200uF 10V fukyuu's and were visibly bulging. I intend to replace these with 10mm 2200uF 10V panasonic FRs.
It has 2 12V rails each with its own pi coil and output capacitor, which are 10mm 2200uF 16V Gi LOWRSR 105C 07B. They are not bulging and test OK on my ESR meter with 0.04ohms ESR. I have never heard of Gi capacitors before. Are they any good? Should I replace them anyway. The only 2200uF 16V 10mm caps that i have found are Panasonic FKs but these are over £1 each. I think I could manage to fit the better 12.5mm 2200uF FRs or FMs here if I raised them up above the pi coils with long legs but would that be ok?
The 12V output is rectified by two MOSPEC 16A ultrafast To-220 rectifiers in parallel. Should I replace these with Schottky's or will the existing ones be good enough.
The 5VSB circuit uses the 2 transistor design but doesn't have the critical electrolytic cap that causes the output voltage to go high. There has not been any excessive overheating.
The output caps were 2 1000uF 10V fukyoos, which were not bulging but I'm going to replace them anyway with 1000uF Panasonic FRs.
There is an unpopulated area on the PCB for an active PFC circuit. I would like to add this back if possible.
I would need the values for the resistors, caps, zeners and the part number for U1. In this place is a passive PFC choke that is screwed to the case. Does anyone have this PSU with the active PFC circuitry populated and could tell me the component values?
Should I also replace the small 10uF and 2.2uF caps?
The primary switchers are 2 D209Ls in half bridge configuration. I think equivalents would be MJE13009's?
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