For anyone working with old Macs, the first step is often to "recap" the board and deal with the PRAM battery.
If your vintage Mac is suddenly living in 1956 (or 1904, 1984, etc.) every time you turn it on, the PRAM battery is likely dead. 2. The Danger Component (Soldered vs. Holder) MACINTOSH PRAM BATTERY
Without a working PRAM battery, a vintage Macintosh (like the Plus, SE, or early Power Macs) "forgets" its settings every time it is unplugged. This means losing time, date, and sometimes custom SCSI settings, which can hinder the boot process. For anyone working with old Macs, the first
Getting Started With Your Vintage Macintosh – Garrett Fuller The Danger Component (Soldered vs
Many early Macintosh computers, such as the Mac SE, have soldered PRAM batteries. While designed to last for many years, these batteries are now decades old and prone to leakage.
Later Power Macintosh models often require a working PRAM battery to function properly.
