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Yes, keyboard problems were mentioned, for example, in the following 1994 FAQ: https://websites.umich.edu/~archive/mac/util/powerbook/duofaq.txt

Yes, (re)formatting the CF card in the 1400 while running from the internal hard drive (using a disk utility such as Drive Setup, or via Erase Disk in the Special menu) is a good idea. PC Exchange et cetera may have to be temporarily disabled. As a first test, an attempt could then be made to...

What happens if you place one of the CompactFlash memory cards (Mac-formatted, with a valid System Folder) in an inexpensive PC Card adapter for CompactFlash, and then use it as a startup disk in one of the PC Card (PCMCIA) slots...

Thank you for the information. If you cannot locate the FAXcilitate software, one of the other general fax applications from the 1990s could perhaps be tested with the PSI PowerModem in question. There was also a shareware program called ValueFax...

FAXcilitate would be the fax software for the PowerModem. Disregarding faxing for a moment, have you tried to use this modem for plain data communication? Since this does not appear to be a soft-modem variant, it may be possible to use a normal terminal emulator (such as Terminal 2.2, FreeTerm...

When something like this happens, you might even consider removing the internal screen and instead using the computer only with an external monitor. The special video adapter cable connected to the video port will work with a number of old Apple monitors. VGA is also supported via an extra...

Sometimes, a direct download is still possible if the exact file address is known.

Addendum The download was part of the Older Software Downloads web page. The first file was (download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English-North_American/Macintosh/System/Older_System/System_7.5_Version_7.5.3/System_7.5.3_01of19.smi.bin). The second...

The System 7.5.3 download originally made available by Apple was actually one single segmented self-mounting image, and did not use a separate Disk Copy utility. For example, the North American version was provided as nineteen separate floppy-sized segments. Each file was protected by an...

Which system version on the LC(s)? StuffIt Expander? Any chance of transferring/downloading files to the LC(s)? Without access to a PB 190 Disk Tools floppy, a Disk Tools PPC...

First of all, just to clarify, the original (perhaps 500 MB or so) IDE hard drive contains a working operating system (which version?) and can boot? If so, you could buy a PC Card adapter for CompactFlash and something like a 0.5 to 2 GB CF card. Then, boot the PB 190 from the original hard...

Yes, this is the same method I use with a PowerBook 5300 (and other models). PC Card adapters for CompactFlash can be found for approx. 10 EUR/USD. Also perfect for file transfers on a PC-formatted CF card from PCs and modern Macs. For downloads, keep the MacBinary (.bin) or BinHex (.hqx)...

You would have to use Mac OS Standard (HFS) on a Mac running anything earlier than Mac OS 8.1. The Mac OS Standard format specifications can be found in the following article: web.archive.org/web/20030201224108/http://docs.info.apple.com/article.html?artnum=8647 The "PPC G4", which exact Mac...

The easiest way is to use a PC Card adapter for CompactFlash, or a similar (5-in-1 etc.) adapter including SD, in one of the PC Card (PCMCIA) slots of the PB 190. A properly formatted flash card with a valid system folder should even be bootable...

The video card appears to be identical, at least according to the PB 5300 note (originally at developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-PPC_Portable/PowerBook_5300.pdf ). You may have to use archive.org and look for a very early result. The video card in...

Details about signals, monitor sense codes, et cetera at the optional video card could be found in the PB 190 developer note (developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-68K_Portable/PowerBook_190.pdf - an archive search may be needed).

May not necessarily help in this case, but there was an optional video-out upgrade card for the PowerBook 190, intended for the connection of an external monitor. See, for example, pp 60-63 in download.info.apple.com/Apple_Support_Area/Manuals/powerbooks/0306899APWRBK190UG.PDF . One idea could...

A line simulator can sometimes be as simple as a 9 V battery in series with a 330 ohm resistor. A ring signal generator of some kind would be useful if one wants automatic answering at the receiving end (for example, a fax machine). Also, an AirPort Extreme base station A1034 with a built-in...

As has been indicated above, you cannot boot a Macintosh Portable from a CD. You would need, for example, a bootable floppy with CD-ROM software. This could be a copy of an appropriate disk tools floppy, or a Network Access Disk 7.5, with an added CD-ROM extension (compatible with the AppleCD...