NeXT Computer / NeXTCube Capacitor Lists

[Elemenoh]

Hey @Elemenoh! This is a great cap compilation [especially for the PSU]. One question, which of the Cube PSU's does this list refer to? There were a few of them used. The older of them was used in original 030 Cubes, while older '030's and '040' used another. The PSU's model number [thankfully] is on the tag. It'll either be 151 or 953. Thank you for posting this....and if it's for the 953, you've saved me a bunch of time!

My power supply is model 152.00 but matches the cap list above.

 

[Elemenoh]

I finished recapping the analog board on the MegaPixel display. Though it seemed to be working fine, many of the caps were out of spec or outright bad.

Rated	Measured	% Dev	DF	Note
0.47µF 100V	447nF	-4.9%	0.08	In spec
1µF 100V	778nF	-22.2%	0.18	Out of tolerance
1µF 160V	930nF	-7.0%	0.20	Borderline DF
22µF 25V BP	20µF	-9.1%	0.30	DF high
22µF 50V	15.7µF	-28.6%	0.20	Out
	14.7µF	-33.2%	0.20	Out
	15.6µF	-29.1%	0.20	Out
	16µF	-27.3%	0.20	Out
	15µF	-31.8%	0.20	Out
	19µF	-13.6%	0.18	In spec
22µF 100V	19µF	-13.6%	0.30	DF high
	20µF	-9.1%	0.10	In spec
	18.5µF	-15.9%	0.30	DF high
	17µF	-22.7%	0.50	DF high
	16.8µF	-23.6%	0.90	DF severe
47µF 50V	40µF	-14.9%	0.27	DF high
100µF 35V	266µF	+166%	0.70	Failed
100µF 50V	85µF	-15.0%	0.80	DF severe
100µF 100V	93µF	-7.0%	0.20	In spec
330µF 35V	2.4pF	~-100%	1.60	Dead/open
	265µF	-19.7%	0.70	DF severe
	255µF	-22.7%	1.00	DF severe
	286µF	-13.3%	0.50	DF high
1000µF 35V	891µF	-10.9%	0.60	DF high
	880µF	-12.0%	0.60	DF high
	513µF	-48.7%	0.35	Failed
1200µF 35V	1078µF	-10.2%	0.50	DF high

 

[Elemenoh]

While I was at it I measured the caps pulled from all of the other boards. So many!

Power Supply

Rated	Measured	% Dev	DF	Note
0.47µF 100V	506nF	+7.7%	0.02	In spec
10µF 63V	9.4µF	-6.0%	0.04	In spec
	9.6µF	-4.0%	0.04	In spec
10µF 250V	10.9µF	+9.0%	0.02	In spec
	10.8µF	+8.0%	0.02	In spec
47µF 25V	44µF	-6.4%	0.09	In spec
100µF 25V	97µF	-3.0%	0.08	In spec
	95µF	-5.0%	0.08	In spec
220µF 25V	203µF	-7.7%	0.09	In spec
1500µF 16V	1273µF	-15.1%	0.10	In spec, watch
2200µF 16V	2100µF	-4.5%	0.13	In spec
	1769µF	-19.6%	0.60	DF severe, borderline cap
3900µF 16V	3500µF	-10.3%	0.20	DF high
8200µF 16V	8100µF	-1.2%	0.16	DF high
10000µF 6.3V	9600µF	-4.0%	0.20	DF high
15000µF 6.3V	15000µF	0.0%	0.30	DF severe
	14000µF	-6.7%	0.30	DF severe

Magneto Optical Drive

Rated	Measured	DF	Note
1µF 50V	86pF	0.5	Failed/open
	608pF	0.8	Failed/open
	118pF	1.7	Failed/open
	680pF	2.3	Failed/open
1µF 100V	866nF	0.08	-13.4%, in spec
	977nF	0.07	-2.3%, in spec
3.3µF 50V	74pF	0.5	Failed/open
	67pF	0.5	Failed/open
10µF 16V	165pF	0.9	Failed/open
	96pF	2.9	Failed/open
	91pF	0.6	Failed/open
	78pF	1.5	Failed/open
	1982pF	1.7	Failed/open
	75pF	0.7	Failed/open
	77pF	0.8	Failed/open
	88pF	0.8	Failed/open
10µF 50V	206pF	0.2	Failed/open
	2.4nF	1.2	Failed/open
	355pF	0.7	Failed/open
	1240pF	3.4	Failed/open
	324pF	0.5	Failed/open
22µF 10V	147pF	6.3	Failed/open
	1728pF	5.8	Failed/open
22µF 16V	80pF	0.1	Failed/open
	180pF	0.5	Failed/open
47µF 16V	479pF	0.7	Failed/open
	779pF	1.9	Failed/open
	430pF	0.4	Failed/open
	620pF	1.8	Failed/open
	410pF	0.7	Failed/open
	1350pF	2.7	Failed/open
	3nF	1.9	Failed/open

MegaPixel Sound Board

Rated	Measured	% Dev	DF	Note
47µF 16V	45µF	-4.3%	0.4	DF high
	45µF	-4.3%	0.4	DF high
	44µF	-6.4%	0.4	DF high
	44µF	-6.4%	0.4	DF high
	44µF	-6.4%	0.4	DF high
	44µF	-6.4%	0.4	DF high
	43µF	-8.5%	0.4	DF high
	43µF	-8.5%	0.4	DF high
	42µF	-10.6%	0.4	DF high
	42µF	-10.6%	0.4	DF high
1500µF 16V	1333µF	-11.1%	0.43	DF high