Quadra 700 PSU capacitor list (Astec AA15831)

If you're looking to recap the PSU from your Quadra 700 and/or you have a Mac with an Astec AA15831, here's the complete list of all the electrolytic and film safety caps.

For convenience, here's a DigiKey list of everything you need: https://www.digikey.com/en/mylists/list/X1H5MFVEFT

Note that some of the parts listed below are no longer being manufactured, so you'll need to come up with appropriate replacements. For example, C25 calls for a 180uF part, but that's a value that's largely become obsolete, so you'll want to pick a 220uF part instead. The same goes for some of the film safety caps.

Main PSU board:

Location(s)	Capacitance	Voltage	Diameter/length	Height/width	Lead spacing
C7, C8	470uF	200V	22mm	40mm	10mm
C6, C35	3300pF	250V Y film safety	13mm long	4mm wide, 9mm high	10mm
C28	1000uF	16V	10mm	28mm	5mm
C20	2200uF	16V	12.5mm	28mm	5mm
C22, C23	1500uF	10V	10mm	28mm	5mm
C27	470uF	16V	8mm	19mm	5mm
C25	180uF	16V	6mm	15mm	5mm
C30	4.7uF	50V	4mm	8mm	2.5mm
C31	100uF	35V	8mm	12mm	5mm

PSU daughterboard:

Location(s)	Capacitance	Voltage	Diameter/length	Height/width	Lead spacing
C214	2.2uF	50V	5mm	11mm	2.5mm
C217	4.7uF	50V	4mm	8mm	2.5mm

PSU AC input board:

Location(s)	Capacitance	Voltage	Diameter/length	Height/width	Lead spacing
C4, C5	4700pF	250V Y film safety	13mm long	5mm wide, 10mm high	10mm
C10	4.7uF	400V	10mm	20mm	5mm
C11	100uF	35V	8mm	12mm	2.5mm
AC inlet board	1000pF	250V Y film safety	13mm long	4mm wide, 9mm high	10mm

 

[geokov]

Thank you very much for taking the time to post this list, I have a non-working ASTEC AA15831 PSU from my IIci in pieces on my desk and went looking for a list of needed caps. This is well organized and helpful post.