68kMLA Classic Interface
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| PowerBook 3400c Repair Stories | |
| Posted by: raoulduke on 2015-07-01 17:53:49 [(I agree with Techknight, but🙂 As a note - Is the 5300 keyboard fully compatible with the 3400c? (just as a warning - i don't think i'd personally leave it in there permanently - but i'm not 100% sure about compatibility, but I don't think they are - it also may not matter much. They are labeled differently in the 5300 and 3400c manuals, respectively [i think the Kanga keyboard may also be labeled differently]).] | |
| Posted by: MikeatOSX on 2015-07-01 18:13:34 To replace the keyboard connector would be a bad thing. 🙁 I found the keyboard compatibility here: http://www.welovemacs.com/9223109.html | |
| Posted by: raoulduke on 2015-07-01 18:20:00 Good to know. Thank you. I misread Techknight. I would clean the connector really well with Scrubbingbubbles... or whatever you use, since I know you said that's not possible in Austria. I'm afraid if it's not the keyboard connector it's probably something worse. | |
| Posted by: MikeatOSX on 2015-07-01 18:20:37 And here: http://www.applemacparts.co.uk/store/powerbook-pre-3400-powerbook-19053003400orig-keyboard-p-75596.html and here: http://www.mactalk.com.au/62/119702-5300c-keyboard.html Hmm... | |
| Posted by: MikeatOSX on 2015-07-01 18:32:20 I used a fiber optics eraser first to remove the verdigris and then water and after that Isopropyl alcohol. But I forgot to look on the bottom side, although I held the logic board in my hands to take pictures. Yes I know: it's crazy! 🙁 | |
| Posted by: MikeatOSX on 2015-07-01 18:34:08 I think I'll try the keyboard from my working PB 3400c first. | |
Posted by: MikeatOSX on 2015-07-13 16:01:53BTW: Here's a new version of the Kanga logic board pic with some labeling.I‘m proud to say: the Kanga is working again! 😎 What I did: I used a Scratch Brush http://www.amazon.com/Scratch-Brush-Fiberglass-Colors-vary/dp/B0019V18D2/ref=pd_bxgy_469_img_y first to remove the verdigris and then water and after that Isopropyl alcohol. But the most important tool was a magnifying glass and very good light. :🙂 Didn‘t realize, that my eyes went older... So thanks for your help! Next to do: still the PB 3400c and several 5300 … :rambo:  | |
| Posted by: galgot on 2015-07-13 23:56:48 Congrat ! 🙂 Will try that Scratch Brush on one of my 3400/240 boards . Only tried with a tooth brush, and it couldn't reach every places. | |
| Posted by: MikeatOSX on 2015-07-14 00:04:36 Good luck! I doubt to be successfull with mine, as the leaking PRAM battery was above the keyboard connectors and video part. The worst place ever! 🙁 | |
| Posted by: MikeatOSX on 2015-07-16 15:09:18 All three PowerBooks (PB 3400c + PB G3 "Kanga" + PB 3400c) are booting to desktop, the left one still with faulty keyboard connectors.  | |
| Posted by: raoulduke on 2016-01-23 22:51:31 What precisely is the fix for the loose power socket issue? I tried soldering mine at each of the contact points to stiffen it up but that had no effect. It seems dead unless you really wedge the adapter to one side and then it's perfectly normal, although it's not really usable since one hand has to be on the plug... I couldn't find a thread on this, but I've heard it mentioned a bunch. | |
| Posted by: MikeatOSX on 2016-01-24 01:20:57 Look here: http://www.sterpin.net/uk/PowerPowerbookG3Kangauk.htm | |
| Posted by: raoulduke on 2016-01-24 10:20:20 I figured it was the contact between those leads and the boards, but I guess it's an issue with the right-angles where the leads bend. I'll fix this when I have time to do it carefully. Thanks again. | |
| Posted by: raoulduke on 2016-02-19 20:40:30 I also had to do the two contacts on the bottom and the contacts on the top-side of the board (like where the two metal prongs on the bottom come up). The picture you posted, I think, just shows the three pads on the bottom but that didn't work by itself for me [like at all; I found I had to push the plug in exactly as I did before soldering, so I figured it had to be other contact points]. And now it doesn't get past the mouse (lol... unreal). This is the Kanga I got from Uniserver, which was in pretty good shape. I actually used this guy a bit last year. I put in a new PRAM battery and there was no noticeable corrosion as of a month ago. So I'm not clear on how this happened; and it's right above the PCMCIA enclosure and on the other side of (I think) the VLSI chip. Really disappointing. I'm soaking it in scrubbing bubbles but I think that must be it. Next step will be a wash. I'd be really shocked/annoyed if it died. | |
| Posted by: raoulduke on 2016-02-20 02:21:06 it's the replacement PRAM batteries I recommended in another thread. They've caused serious corrosion in the Kanga and a 3400c over only a few months. The 3400c still seems fine. The Kanga gets past the RAM test and to the screen on-mouse, but that's it. I haven't tried the SCSI yet. I'll try cleaning them both more thoroughly tomorrow. But so clearly I guess if you don't intend to use these machines very regularly (because I think this is a NiCAD regular use/maintenance issue but somebody feel free to correct me) then don't put PRAM batteries in. Probably a better rule... just don't put PRAM batteries in. | |
| Posted by: MikeatOSX on 2016-02-20 04:23:28 I also got serious problems on one Kanga and one 3400c, as the old PRAM batteries were dropping onto the keyboard connections. Worst place ever! 🙁 I'm using this replacement battery, which works best on my remaing 3400c/Kangas (black = plus!): http://www.ebay.com/itm/181762181041 | |
| Posted by: raoulduke on 2016-02-20 08:02:03 Yep. That's a relist of the one I posted. Let me know when it destroys your machines, but keep in mind it didn't take very long for me. And it didn't drop. It just corroded with the irregular charge/discharge schedule. I suppose perhaps I had some very obscure problem, but I would take the battery out. | |
Posted by: MikeatOSX on 2016-02-20 17:31:31It just corroded with the irregular charge/discharge schedule.I didn't put it back to the original place. | |
| Posted by: raoulduke on 2016-02-20 21:16:59 No I understand. My damage wasn't immediately under the battery on the 3400c. Is it possible that corrosion can travel along wires or traces - which would also explain why the wire from the battery to the power distribution board (all along that wire) is often corroded. I mean on the 3400c one random via seemed corroded. [Via catalysis, for instance.] | |
| Posted by: MikeatOSX on 2016-02-21 01:00:13 There is an adapter on half of the length of the original PB3400c/Kanga PRAM battery cable, which I never could open, as it's always corroded too. | |
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