RTC repair references

Reading notes prepared October 18, 2026. These summaries link to the original accounts. They are not copies of the discussions or installation instructions.

Arcade hardware

Mrhide, “Konami Viper RTC dremel and battery replacement,” Arcade Projects, January 9, 2022. The author documents opening an M48T58 package, exposing battery connections and fitting an external holder. The thread also records broken connections and difficulties encountered during repair. Original discussion.

Computer modules

Jonathan Chapman, “Did i nuke my SS20?”, Sun rescue mailing list, August 5, 2021. Describes repair boards for M48T02, M48T08 and DS12887 modules, distinguishing rebuilt modules from new replacements and noting socket and height constraints. Original message.

Test equipment

“Make a backup of your TDS5xx/6xx/7xx memories,” TekScopes mailing list. Participants discuss preserving oscilloscope memory before component replacement. One contributor describes calibration information in a TDS544A's NVRAM and difficulties reading the device in a programmer. The discussion also shows why storage arrangements must be checked by model. The search index supplied the text; direct page retrieval failed during this review. Original discussion.

Tektronix's TDS 520B/540B family service documentation separately specifies retention of setups, waveforms and calibration constants. Manufacturer manual.