IBM 5160 PSU 240V

For more information, see this article's corresponding Wikipedia page: IBM Personal Computer XT.

Released as the IBM Personal Computer XT, or PC/XT, the 5160 is based around Intel's 8088 processor featuring 8-bit ISA slots for expansion cards. It came with one 5.25" floppy drive, and one 5.25" full height HDD most commonly 10MB. The PC/XT used a 130W power supply.

This device is in the WorkNeeded:ReplacementParts category because it was flagged as missing information on replacement parts. If it has the original parts listed you may be able to search for replacements using the parametric searches available from parts distributors. If you have or make a list of replacement parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables

Preliminary Information
Leak Risk	Low
Batteries	None
Destructive Entry	No

Known Issues

No Power

Causes

• Power supply will not turn on

Solutions

• Power supply must have a load on it to activate
• Recap

Disassembly Notes

The external casing must be tilted up when pulled all the way forward to release.

Watch out for the speaker on the left side when sliding the casing.

The centre screw tab may catch on the PSU and cable (lift rear of case when sliding avoid).

PSU is held by four 1/4" hex screws to rear of PC case and two slides on bottom of PC case and needs to be slid toward front of PC to release.

When connecting the PSU back to the system the mother board power connectors P8 and P9 should have the black wires next to each other.

The PSU case has two Torx T15H security screws in addition to the standard 1/4" hex screws.

Once the PSU is opened, there are four 1/4" hex screws that need to be undone to fully remove the main board, in addition to an earth wire and connector from the AC input board.

There are three sub-boards attached to the main PSU board that generally do not need to be removed to access all the electrolytic caps.

Original Parts

130W Power Supply Main Board

204-1071-03

• 

  PSU example 1

• 

  PSU example 1 board identifiers

• 

  Decapped PSU example 1

• 

  C3 on overcurrent sub-board (reverse orientation?)

• 

  PSU example 2

Note: in the two PSU examples shown here, the sub-boards extending towards the camera are left Voltage Windows, centre Overcurrent Monitor, right Inrush Limiter

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Height	Lead Spacing	Temp	Type	Brand	Series
C1 Inrush Limiter sub-board	1	100 µF	25V	Through hole (radial)	7mm	12mm	3mm	105C	Electrolytic	Marcon	CE-US (4WC?)
C2 Inrush Limiter sub-board	1	3.3µF	25V	Through hole (radial)	5mm	12mm	2mm	105C	Electrolytic	Nichicon	M
C2, C3 Overcurrent sub-board	2	1 µF	50V	Through hole (radial)	5mm	12mm	2mm	105C	Electrolytic	KML
C3001 Voltage Window sub-board	1	47 µF	16V	Through hole (radial)	6mm	12mm	3mm	105C	Electrolytic	Nichicon	M
C25	1	2.2 µF	50V	Through hole (radial)	5mm	12mm	2mm	105C	Electrolytic	Marcon	CE-US (3VC?)
C10, C29	2	10 µF	16V	Through hole (radial)	5mm	12mm	2mm	105C	Electrolytic	Nichicon	M
C16, C17	2	10 µF	25V	Through hole (radial)	5mm	12mm	2mm	105C	Electrolytic	Marcon	CE-US (3XC?)
C27	1	22 µF	16V	Through hole (radial)	5mm	12mm	2mm	105C	Electrolytic	Marcon	CE-US (3YC?)
C5, C6	2	330 µF	16V	Through hole (radial)	10mm	16mm	5mm	105C	Electrolytic	Marcon	CL-US (4WB?)
C21	1	470 µF	25V	Through hole (radial)	13mm	20mm	5mm	105C	Electrolytic	Nichicon	M
C14, C15	2	470 µF	200V	Through hole (radial, snap)	25mm	40mm	10mm	85C	Electrolytic	Matsushita	CE
C9	1	1000 µF	25V	Through hole (radial)	16mm	25mm	8mm	105C	Electrolytic	KML	M(?)
C7, C8	2	2200 µF	10V	Through hole (radial)	16mm	25mm	8mm	105C	Electrolytic	Matsushita	CE GM
C11	1	4700 µF	16V	Through hole (radial)	18mm	35mm	8mm	105C	Electrolytic	Marcon	CE-US (4PB?)

Note: The polarity of the C3 cap on the Overcurrent sub-board appears to be marked incorrectly on the board. See picture above. Check and confirm before removing/replacing. Presumably the PSU functioned correctly for most of its life and the manufacturer knew to ignore the polarity marking for this cap.

Replacement Parts

130W Power Supply Main Board

Capacitors

RefDes	Qty	Compatible Part Number	Order Links
C1 Inrush Limiter sub-board	1
C2 Inrush Limiter sub-board	1
C2, C3 Overcurrent sub-board	2
C3001 Voltage Limiter sub-board	1
C25	1
C10, C29	2
C16, C17	2
C27	1
C5, C6	2
C21	1
C14, C15	2	Nichicon LLS2D471MELZ	Element14
C9	1
C7, C8	2
C11	1

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Related Links

See https://minuszerodegrees.net/5160/psu/5160_psu.htm for additional information

See https://minuszerodegrees.net/5150_5160/MDC/minimum_diag_config.htm for how to confirm faulty PSU

See https://slx-online.biz/hursley/docs/5155_psu.pdf by Dr H.Holden for a comprehensive breakdown of a 5155 PSU that is very similar. This is absolute gold.