Very carefully. With extra ductape

{ "lightbox_close": "Close", "lightbox_next": "Next", "lightbox_previous": "Previous", "lightbox_error": "The requested content cannot be loaded. Please try again l…

Bought myself an ATX power unit! Now studying the way to connect it.

Says out of stock but you can email and ask - I'd be pushy.  When I emailed about their 180mhz 3400c main board, they just said out of stock:  http://www.pchub.com/uph/laptop/344-2…

Very rare to find indeed. And I've heard...stuff...about the Newton Sales upgrade, so if I were in the market I'd try to find the Newertech part.

If I recall Newertech made some cards. But I have never seen them. My guess is that these may be a rare thing to find.

The Kanga power boards are the same and the motherboards are mostly the same.  I'm not 100% sure why those noises but I think it's a capacitor issue.  As you've noted, when you lea…

Btw, I have Kanga too,  witch is almost the same machine. It has that sound problem. Runs and start Ok, but if I leave it plugged on the the power block for a while (like for a ni…

Got about an hour and 10 minutes on its original battery before it died. And it didnt really die, the Energy power management kicked in and put it to sleep.  has a 1997 date code,…

So I'm pretty sure the ADB problem is related to one or maybe two tiny components on the underside of the board just behind the ADB port if moving from the edge of the board.  I th…

All this 3400c talk made me want to pull out mine, and it has its original battery. It is still holding a charge for over an hour of runtime. 

Mouser actually has the holders for just under $6 (534-1109) though they are backordered.  I think for the 3400c battery I'm going to go that route with these:  http://www.ebay.com…

Thanks. *)  Yes, it's back to booting for the most part.  Crashes with the card almost like clockwork > Sad Mac. 1)  Cardbus:  Yea I worded a lot of that unhelpfully I'm g…

Also, why the Disk Tools floppy?  Not that that is your problem now, but why not a fresh install of a full system?  NB that when you're installing a system from another machine, y…

raoulduke said: it's only when the Card's inserted that it freezes. Click to expand... So it's back to booting okay now, without the card? Could some weird PCMCIA …

[that read on my 3400; it's not Cardbus] Click to expand... The 3400 is Cardbus compliant:  it usually requires a one-wire mod to activate it, but someone may have already done…

raoulduke said: I should have put a question mark on superseding. It's a proposal-topic. It just seems like there's next to nothing on 3400 repairs. Click to expand... T…

There is a RAM card.  But it's only when the Card's inserted that it freezes.  Could some weird PCMCIA issue have screwed up the IDE bus?  [After the first Sad Mac, I subsequently …

The 5300c has a RAM Card in it? Open her up and press down on the cards to make sure they are properly seated. Then check your cabling. What OS is on the Card and on the HD and wh…

Weirdly appears to just be hard drive failure. It's my first sad mac. Sorry for the false alarm [or maybe not, I don't know]. The HD failure is possibly coupled with the 5300 ha…

For the record, I would have posted again sooner but I can't figure out how to convert a Newton ROM into a .stg file for the Backup feature on Active Sync/Mobile Center.  I'm hones…

Also I recapped my power board.  I find no indication it works better than the others.  I think there may be minor issues with the power boards but that mostly the power issues are…

One of these days I'll make it there.

Interesting. You had no corrosion damage. So I got mine to move from gray screen to flashing image by dishwashing the board. Personally I think the culprit is a CMOS chip on the un…

Interesting thread. I have a 3400c/240 too sitting in the closet. never could solve the problem... here is the thread if of some interest : https://68kmla.org/forums/index.php?/t…