The 'correct' charger is a Macintosh PowerBook 45W Power Adapter, M4896 (1996), 100-240VAC 1.2A in and 24VDC 1.87A out. The M3037 (1995) for a PB 5300 looks similar, and has a similar input/output, but has an unsuitable plug for a 1400.
There is also an M4328 (1997) adapter for the 2400c with identical input/output and a suitable plug to fit the PB 1400. You may be lucky enough to find an Asian eBay seller (local338) who can supply a new version of the M4328 for about USD5.00 (plus USD14.00 postage), but it is nearly three years since I got one from him.
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There is also an M4328 (1997) adapter for the 2400c with identical input/output and a suitable plug to fit the PB 1400. You may be lucky enough to find an Asian eBay seller (local338) who can supply a new version of the M4328 for about USD5.00 (plus USD14.00 postage), but it is nearly three years since I got one from him.
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