Macintosh Performa 275 Troubleshooting

The Macintosh Performa 275 is a Macintosh Performa rebadge of the Macintosh Color Classic II — the two are the same hardware, sold under different names and bundles.^[1] Because the logic board, analog board and power supply are identical, the Macintosh Color Classic II Troubleshooting page applies in full: use it for power, video, capacitor, storage and audio diagnosis.

The Performa 275 is the Color Classic II (an LC 550 logic board with a 33 MHz 68030 and full 32-bit bus in the Color Classic case), sold mainly outside the USA. Capacitor leakage is the dominant fault.

Common faults (shared with the Macintosh Color Classic II)

As with the Macintosh Color Classic II, the first steps on any un-serviced unit are to replace the electrolytic capacitors and inspect for PRAM-battery leakage and its corrosion, then confirm the power-supply rails. Full detail, test points and fixes are on Macintosh Color Classic II Troubleshooting.

Related pages

References

↑ "Apple's Performa Line, 1992 to 1997", Low End Mac; "Performa Month", 512 Pixels; and the corresponding model articles on Wikipedia. Source for the Performa-to-model equivalences.

[perf-1] "Apple's Performa Line, 1992 to 1997", Low End Mac; "Performa Month", 512 Pixels; and the corresponding model articles on Wikipedia. Source for the Performa-to-model equivalences.

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