Commodore 64C Capacitor Replacement Guide

Recapping a Commodore 64C — and any Commodore 64 built on the 250469 "short board" — restores stable supply rails and removes a common source of audio and video noise.

Every value on this page is taken from Commodore's own parts list for PCB assembly 250469-01 in the C64 / C64C Service Manual (March 1992).^[1]

Which board is this?

The 250469 short board is the one used in the C64C slim case, and in late "bread bin" machines. The assembly number is silkscreened on the board. For the earlier long boards — 326298, 250407, 250425 and 250466 — see Commodore 64 Capacitor Replacement Guide, which lists a different and non-overlapping set of parts.

Electrolytic capacitors — 250469-01

**250469-01 (C64-E / 64C) electrolytics**^[1]
Ref	Value	Rating	Package	Commodore part no.
C63	1000 µF	16 V	Axial	900101-52
C63 (second entry — see note)	2200 µF	16 V	Axial	900101-33
C66	470 µF	35 V	Radial	900301-35
C43	220 µF	16 V	Radial	900100-18
C65	220 µF	25 V	Radial	900100-03
C58	100 µF	16 V	Radial	900100-40
C36	47 µF	16 V	Radial	900100-33
C44	22 µF	50 V	Radial	251079-06
C77	10 µF	25 V	Radial	900100-01
C59	4.7 µF	25 V	Radial	900100-11

Note on C63. Commodore's printed parts list for this assembly contains two entries for C63 — 1000 µF 16 V (900101-52) and 2200 µF 16 V (900101-33).^[1] This wiki has not been able to determine whether that reflects a running change or an error in the manual. Read the value off your own board and fit like for like; either part is physically and electrically reasonable in that position, and the higher value will not do harm.

What is not an electrolytic on this board

Worth stating plainly, because the previous version of this page got it wrong:^[1]

Ref	What it actually is
C2–C4, C6, C76, C90	Ceramic, 470 pF 50 V
C74	Ceramic, 1000 pF 50 V
C80, C81	Ceramic, 1800 pF 50 V / 2200 pF 25 V depending on the list
C86–C88	Ceramic, 220 pF 50 V
C94	Ceramic, 150 pF 50 V
C70, C71	Ceramic, 22000 pF
C1, C7, C28–C30	Ceramic, 0.1 µF 25 V

Ceramics of this type do not age the way aluminium electrolytics do and are not part of a routine recap.

Before you start

Work from your own board's silkscreen. The assembly number tells you which list applies; the board itself is the final authority.
Anti-static precautions throughout. The 8500, 8565/8562 VIC-II, 8580 SID and the Super PLA are the parts you cannot casually replace.
See Capacitor Failure Symptoms for recognising a failed part and Recommended Tools for the workshop kit.

Related pages

Commodore 64C · Commodore 64C General Maintenance · Commodore 64 · Commodore 64 Capacitor Replacement Guide
Commodore C64 Service Manual — the source for every value on this page
Capacitor Failure Symptoms · Recommended Tools

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 Commodore Business Machines, C64 / C64C Service Manual, March 1992, hosted at Commodore 64 / 64C Service Manual. Parts list for PCB assembly 250469-01 (C64-E), giving capacitance, voltage rating, package and Commodore part number for every capacitor on the short board.

[sm-1] 1.0 ^1.1 ^1.2 ^1.3 Commodore Business Machines, C64 / C64C Service Manual, March 1992, hosted at Commodore 64 / 64C Service Manual. Parts list for PCB assembly 250469-01 (C64-E), giving capacitance, voltage rating, package and Commodore part number for every capacitor on the short board.

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