Power Supplies - Revision history

FrankRahman: /* Boschert */

2026-07-09T00:34:13Z

Boschert

← Older revision		Revision as of 00:34, 9 July 2026
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	\| '''Boschert XL53.3101R "Clear"'''		\| '''Boschert XL53.3101R "Clear"'''
	\|-		\|-
	\| [[File:Boschert1 2.jpg\|thumb]] \|\| [[File:Boschert1 label2.jpg\|thumb]] \|\| #8409 - MBO 9876 (82/43)<br>#12275 - MBO 3773 (82/48)		\| [[File:Boschert1 2.jpg\|thumb]] \|\| [[File:Boschert1 label2.jpg\|thumb]] \|\| #8409 - MBO 9876 (82/43)<br>#12275 - MBO 3773 (82/48)<br>Loose board - MBP 8280
	\|-		\|-
	\| '''Boschert XL53.3601R "Green"'''		\| '''Boschert XL53.3601R "Green"'''
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	\| '''Boschert XL60.3601R'''		\| '''Boschert XL60.3601R'''
	\|-		\|-
	\| [[File:Boschert2.jpg\|thumb]] \|\| [[File:Boschert2 rifa.jpg\|thumb]] \|\| [[File:Boschert2 label.jpg]]		\| [[File:Boschert2.jpg\|thumb]] \|\| [[File:Boschert2 rifa.jpg\|thumb]] \|\| [[File:Boschert2 label.jpg]]<br>
			[[File:Boschert XL60 3601 label.jpg]]
	\|-		\|-
	\| [[File:Boschert 50 & 60 chart.jpg\|thumb]]		\| [[File:Boschert 50 & 60 chart.jpg\|thumb]]

FrankRahman: /* Cal DC */

2026-06-05T02:13:00Z

Cal DC

← Older revision		Revision as of 02:13, 5 June 2026
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	\| [[File:CalDC1.jpg\|400px]] \|\| No RIFAs on these boards<br>Ceremaic Disk Capacitors provide EMI Filtering<br>C1 has 2 0.1microFarad Z caps 500V<br>C2 and C3 are 2200 picoFarad 3000V Y5U<br>C4 has a single cap that matches those in C1 \|\| [[File:CalDC1 label.jpg\|400px]]		\| [[File:CalDC1.jpg\|400px]] \|\| No RIFAs on these boards<br>Ceremaic Disk Capacitors provide EMI Filtering<br>C1 has 2 0.1microFarad Z caps 500V<br>C2 and C3 are 2200 picoFarad 3000V Y5U<br>C4 has a single cap that matches those in C1 \|\| [[File:CalDC1 label.jpg\|400px]]
	\|-		\|-
	\| [[File:CalDC1 jumpers.jpg\|400px]] \|\| #2775 - 037085 <br> #3590 - 039421 <br> #4207 - 040864 <br> #4222 - 040858		\| [[File:CalDC1 jumpers.jpg\|400px]] \|\| #2775 - 037085 <br> #3590 - 039421 <br> #4207 - 040864 <br> #4222 - 040858 <br> #4223 - 040890
	\|-		\|-
	\|'''Cal DC LR5301-03 "Clear"''' <br> (Note that there is a slightly different board layout)		\|'''Cal DC LR5301-03 "Clear"''' <br> (Note that there is a slightly different board layout)

FrankRahman at 05:08, 9 March 2026

2026-03-09T05:08:51Z

← Older revision		Revision as of 05:08, 9 March 2026
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	\|-		\|-
	\|		\|
	[[File:Left Power supplies.jpg]]		[[File:Left Power supplies.jpg\|400px]]
	\|\|		\|\|
	[[File:Right Power supplies.jpg]]		[[File:Right Power supplies.jpg\|400px]]
	\|}		\|}

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	\|-		\|-
	\|		\|
	[[File:2767 harness.jpg]]		[[File:2767 harness.jpg\|400px]]
	\|\|		\|\|
	[[File:2775 harness.jpg]]		[[File:2775 harness.jpg\|400px]]
	\|\|		\|\|
	[[File:3590 harness.jpg]]		[[File:3590 harness.jpg\|400px]]
	\|}		\|}

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	\| '''Cal DC LR5301-15 Labeled on Capacitor''' Note:85W		\| '''Cal DC LR5301-15 Labeled on Capacitor''' Note:85W
	\|-		\|-
	\| [[File:Cal dc3 288536.jpg\|~~thumb~~]]		\| [[File:Cal dc3 288536.jpg\|400px]]
	\|\| [[File:Cal dc3 rifa 288536.jpg\|~~thumb~~]]		\|\| [[File:Cal dc3 rifa 288536.jpg\|400px]]
	\|\| [[File:Caldc 3 label 288536.jpg\|~~thumb~~]]		\|\| [[File:Caldc 3 label 288536.jpg\|400px]]
	\|\|		\|\|
	\|-		\|-

FrankRahman: /* Cal DC */

2026-03-09T05:03:39Z

Cal DC

← Older revision		Revision as of 05:03, 9 March 2026
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	\|In my earliest Kaypros I have the blue board CalDC boards		\|In my earliest Kaypros I have the blue board CalDC boards
	\|-		\|-
	\| [[File:CalDC1.jpg\|~~thumb~~]] \|\| No RIFAs on these boards<br>Ceremaic Disk Capacitors provide EMI Filtering<br>C1 has 2 0.1microFarad Z caps 500V<br>C2 and C3 are 2200 picoFarad 3000V Y5U<br>C4 has a single cap that matches those in C1 \|\| [[File:CalDC1 label.jpg\|~~thumb~~]]		\| [[File:CalDC1.jpg\|400px]] \|\| No RIFAs on these boards<br>Ceremaic Disk Capacitors provide EMI Filtering<br>C1 has 2 0.1microFarad Z caps 500V<br>C2 and C3 are 2200 picoFarad 3000V Y5U<br>C4 has a single cap that matches those in C1 \|\| [[File:CalDC1 label.jpg\|400px]]
	\|-		\|-
	\| [[File:CalDC1 jumpers.jpg\|~~thumb~~]] \|\| #2775 - 037085 <br> #3590 - 039421 <br> #4207 - 040864 <br> #4222 - 040858		\| [[File:CalDC1 jumpers.jpg\|400px]] \|\| #2775 - 037085 <br> #3590 - 039421 <br> #4207 - 040864 <br> #4222 - 040858
	\|-		\|-
	\|'''Cal DC LR5301-03 "Clear"''' <br> (Note that there is a slightly different board layout)		\|'''Cal DC LR5301-03 "Clear"''' <br> (Note that there is a slightly different board layout)
	\|-		\|-
	\| [[File:CalDC1 Clear.jpg\|~~thumb~~]] \|\| Early ones have ceramic caps in C2-4 <br> #21460 has 2 2200pF Ys (C2 and C3) (Lead space requires bending leads) and 0.22microF X2 (C4) \|\| [[File:CalDC1 Clear Label.jpg\|~~thumb~~]]		\| [[File:CalDC1 Clear.jpg\|400px]] \|\| Early ones have ceramic caps in C2-4 <br> #21460 has 2 2200pF Ys (C2 and C3) (Lead space requires bending leads) and 0.22microF X2 (C4) \|\| [[File:CalDC1 Clear Label.jpg\|400px]]
	\|-		\|-
	\| [[File:CalDC1 Clear Jumpers.jpg\|~~thumb~~]] \|\| #12654 - 48859 <br> #15453 - 50863 <br> #21460 - 53810		\| [[File:CalDC1 Clear Jumpers.jpg\|400px]] \|\| #12654 - 48859 <br> #15453 - 50863 <br> #21460 - 53810
	\|-		\|-
	\| '''Cal DC LR5301-15 Labeled on Transformer''' Note:65W		\| '''Cal DC LR5301-15 Labeled on Transformer''' Note:65W
	\|-		\|-
	\| [[File:CalDC2.jpg\|~~thumb~~]] \|\| [[File:CalDC2 rifa.jpg\|~~thumb~~]] \|\| [[File:CalDC2 label.jpg\|~~thumb~~]] \|\|		\| [[File:CalDC2.jpg\|400px]] \|\| [[File:CalDC2 rifa.jpg\|400px]] \|\| [[File:CalDC2 label.jpg\| 400px]]
	\|-		\|-
	\| '''Cal DC LR5301-15 Labeled on Capacitor''' Note:85W		\| '''Cal DC LR5301-15 Labeled on Capacitor''' Note:85W
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	\|\| [[File:Caldc 3 label 288536.jpg\|thumb]]		\|\| [[File:Caldc 3 label 288536.jpg\|thumb]]
	\|\|		\|\|
			\|-
			\| '''Cal DC LR5301-15 Rev E Blue Board'''
			\|-
			\| [[File:CalDC LR5301-15 top Rev E.jpg\| 400px]]
			\|\| [[File:CalDC LR5301-15 Rifa Rev E.jpg]]
			\|\| [[File:CalDC LR5301-15 Label Rev E.jpg]]
	\|-		\|-
	\|		\|

FrankRahman: /* Harness Notes */

2026-01-08T18:02:20Z

Harness Notes

← Older revision		Revision as of 18:02, 8 January 2026
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	==Harness Notes==		==Harness Notes==
	The wiring harness on the very early machines appears to have all white wires on the 10 (or 9) pin connector. This appears on the #2767 and #2775, but my #3590 has black, white, red and green wires as does every later machine ~~does~~.		The wiring harness on the very early machines appears to have all white wires on the 10 (or 9) pin connector. This appears on the #2767 and #2775, but my #3590 has black, white, red and green wires as does every later machine I have seen.

	{\| class="wikitable"		{\| class="wikitable"

FrankRahman at 17:57, 8 January 2026

2026-01-08T17:57:10Z

← Older revision		Revision as of 17:57, 8 January 2026
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	<br>		<br>
	From the Tech Manual for switching to 220V:		From the Tech Manual for switching to 220V:

			==Kaypro 16 Power Supply==
			The Kaypro Power Supply is slightly different from the CPM Kaypros.

			[[File:K16 PSU California DC.jpg\|400px]]

			The California DC boards are labeled correctly with the power supplied.
			[[File:K16 PSU California DC connector.jpg\|400px]]

			{\| class="wikitable"
			\|-
			\| J1 (AC IN) \|\| 1 \|\| Hot
			\|-
			\| \|\| 2 \|\| Neutral
			\|-
			\| \|\| 3 \|\| Ground
			\|-
			\| Space \|\| \|\|
			\|-
			\| J2 (DC OUT) \|\| 1 \|\| +12
			\|-
			\| \|\| 2 \|\| Keyed
			\|-
			\| \|\| 3 \|\| -12
			\|-
			\| \|\| 4 \|\| +12
			\|-
			\| \|\| 5 \|\| +12
			\|-
			\| \|\| 6 \|\| COM
			\|-
			\| \|\| 7 \|\| COM
			\|-
			\| \|\| 8 \|\| COM
			\|-
			\| \|\| 9 \|\| COM
			\|-
			\| \|\| 10 \|\| +5
			\|-
			\| \|\| 11 \|\| +5
			\|-
			\| \|\| 12 \|\| +5
			\|-
			\| \|\| 13 \|\| +5
			\|}

FrankRahman: /* Letting out the magic smoke */

2025-08-04T22:38:13Z

Letting out the magic smoke

← Older revision		Revision as of 22:38, 4 August 2025
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	[[File:Letting out the magic smoke.jpg\|400px]]		[[File:Letting out the magic smoke.jpg\|400px]]
	\|}		\|}
	99% of the time it is likely that the RIFA filtering caps blew in your machine. This is very likely if the machine has not been serviced in a long time. Use this page and my ~~notes~~ on ~~RIFA caps~~ to address this problem.		99% of the time it is likely that the RIFA filtering caps blew in your machine. This is very likely if the machine has not been serviced in a long time. Use this page and my "A note about Filter Caps" on the page [[FCC regulations]] to address this problem.

	==Mounting Notes==		==Mounting Notes==

FrankRahman: /* Mounting Notes */

2025-08-04T22:35:42Z

Mounting Notes

← Older revision		Revision as of 22:35, 4 August 2025
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	For FCC info [[FCC regulations\|click here.]]		For FCC info [[FCC regulations\|click here.]]

			==Letting out the magic smoke==
			I have seen many eBay listing stating something like the following:
			* "Was testing this and it randomly shorted out."
			* "Plugged it in seemed to work then it went Pop and didn't work anymore."
			One time I even saw this picture:
			{\|
			\|-
			\|
			[[File:Letting out the magic smoke.jpg\|400px]]
			\|}
			99% of the time it is likely that the RIFA filtering caps blew in your machine. This is very likely if the machine has not been serviced in a long time. Use this page and my notes on RIFA caps to address this problem.

	==Mounting Notes==		==Mounting Notes==

FrankRahman at 14:53, 11 June 2025

2025-06-11T14:53:11Z

← Older revision		Revision as of 14:53, 11 June 2025
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			For FCC info [[FCC regulations\|click here.]]

	==Mounting Notes==		==Mounting Notes==

FrankRahman: /* Harness Notes */

2024-12-18T14:36:17Z

Harness Notes

← Older revision		Revision as of 14:36, 18 December 2024
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	{\| class="wikitable"		{\| class="wikitable"
	\|-		\|-
	\| #2767<br> Photo From ~~retrocmp.de~~ \|\| #2775 \|\| #3590		\| #2767<br> Photo From Thomas Brase \|\| #2775 \|\| #3590
	\|-		\|-
	\|		\|