IBM 5160 PSU 240V: Difference between revisions

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(→‎Disassembly Notes: Refined the disassembly procedure)
(→‎130W Power Supply Main Board: Added note about C3 overcurrent polarity)
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Note: The polarity of the C3 cap on the Overcurrent sub-board appears to be marked incorrectly on the board. Check to confirm before removing.


==Replacement Parts==
==Replacement Parts==

Revision as of 12:55, 13 May 2024

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.


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

Note: Protruding toward camera - Voltage Limiter sub-board on left, Overcurrent sub-board in centre, Inrush Limiter sub-board on right,

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 Macron 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 Limiter 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 Macron 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 Macron CE-US (3XC?)
C27 1 22 µF 16V Through hole (radial) 5mm 12mm 2mm 105C Electrolytic Macron CE-US (3YC?)
C5, C6 2 330 µF 16V Through hole (radial) 10mm 16mm 5mm 105C Electrolytic Macron 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 Macron CE-US (4PB?)

Note: The polarity of the C3 cap on the Overcurrent sub-board appears to be marked incorrectly on the board. Check to confirm before removing.

Replacement Parts

Basic PCB Name

Capacitors
RefDes Qty Compatible Part Number Order Links
Digikey

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

References